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Seagate Cheetah ST3450056SS hard disk drive

1. 15 5 1 Error ates ose y E de ah die EUER DI Nube eXGIS AG TR EE RN RES 15 5 1 1 Recoverable EITOIS sig sed evecta ews Roa P AR LESSER UN ERE USE 15 5 1 2 Unrecoverable Errors 222er el es 15 5 1 3 Seek errors ev cepe eU b Ina a a 16 5 1 4 Interface errors ne A KG X UE TA 16 5 2 Reliability and service eaea e ne 16 5 2 1 Annualized Failrue Rate AFR and Mean time between failure MTBF 16 5 2 2 Preventive maintenance 16 9 2 3 Hot plugging the drive 16 5 2 4 OMARA Se ee Ded a T Sa de Saal KA 17 5 2 5 Therrial moritot ettet uae me amp ae are 18 5 2 6 Drive Self Test DST been reia 19 5 2 7 Product warranty x evi veni x Da RR OE EORR LA ae RR ATE 21 Physical electrical specifications 23 6 1 AC powerreguiremenis 23 6 2 DC powerreguirements 23 6 2 1 Conducted noiseimmunity 27 6 2 2 Power seguencing 27 6 2 3 Current profiles 27 6 3 Power dissipation soe eir IA nn 30 6 4 Environmental limits oo 36 6 4 1 Temperature ec RO mba Nan aa Bae ee Rus d 36 Cheetah 15K 6 SAS Product Manual Rev B 7 0 8 0 9 0 10 0 6 4 2 Rel
2. Seagate C Product Manual Cheetah 15K 6 SAS ST3450856SS ST3450056SS FDE ST3300656SS ST3300056SS FDE ST3146356SS ST3146756SS FDE 100466193 Rev B September 2008 2008 Seagate Technology LLC All rights reserved Publication number 100466193 Rev B September 2008 Seagate Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and or other countries Cheetah SeaTools and SeaTDD are either trademarks or reg istered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and or other countries All other trademarks or registered trademarks are the property of their respective own ers One gigabyte or GB equals one billion bytes when referring to hard drive capacity Accessible capacity may vary depending on operating environment and formatting Quantitative usage examples for various applications are for illustrative purposes Actual quantities will vary based on various factors including file size file format features and application software Seagate reserves the right to change without notice product offerings or specifications 1 0 2 0 3 0 4 0 5 0 6 0 Contents A 1 Standards compliance and reference documents 3 2 1 Standards Ae TE 3 2 1 1 Electromagnetic compatibility 3 2 2 Compliance ee dias Pura cada 4 2 2 1 Electromag
3. Table 21 Commands supported by Cheetah 15K 6 SAS family drives Command name Command code Supported Change Definition 40h Compare 39h Copy 18h Copy and Verify 3Ah Format Unit 1 04h DPRY bit supported DCRT bit supported STPF bit supported IP bit supported DSP bit supported IMMED bit supported VS vendor specific Inquiry 12h Date Code page C1h Device Behavior page C3h Firmware Numbers page COh Implemented Operating Def page 81h Jumper Settings page C2h Supported Vital Product Data page 00h Unit Serial Number page 80h Lock unlock cache 36h Log Select 4Ch PCR bit DU bit DS bit TSD bit ETC bit TMC bit LP bit Log Sense 4Dh Application Client Log page 0Fh Buffer Over run Under run page 01h Cache Statistics page 37h Factory Log page 3Eh Last n Deferred Errors or Asynchronous Events page 0Bh z z lt lt z lt lt zi zi z lt lt z lt lt 2 lt lt lt lt lt lt lt lt z lt lt lt I lt lt I Z lt Z Z zi z Last n Error Events page 07h Cheetah 15K 6 SAS Product Manual Rev B Table 21 Commands supported by Cheetah 15K 6 SAS family drives continued Command name Command code Supported Non medium Error page 06h Pages Supported list 00h Read Error Counter page 03h Read Reverse Error Counter page 04h Self test Results page 10h Background Medium Scan pag
4. i 2X 793 i N k q z E n Y y 24 00 6 35 250 ba gt 6X 6 32UNC 2B Z em 945 THRU Y 422 X 90 8 166 X 90 2x2845 2036 2X 1 120 9 014 z x y 2X 70 05 2X 2 758 014 122 00 4 803 UNITS OF MEASURE mm inches 2X 130 05 2X 5 120 Y a Y 4 146 99 MAX 5 787 MAX Lu M 131 17 5 164 4X 6 32UNC 28 S 85 60 3 370 Y 4 57 MIN BLIND 18 MIN BLIND xu Z 41 15 1 620 V d422X 909 166 X 90 793 XIX 2X 29 21 LE 5 014 alie i 1 I ca E 2X 1 150 1 45 057 101 60 25 3 17 125 DRIVE 4 000 010 CENTER 50 80 ci LINE 2 000 2X 100 13 2X 3 942 20 68 814 98 42 E LX 3 875 11 1 3 A sa L E 33 40 1 315 1 0 76 A 6 030 ZIKIY p l 5 0 13 ba AN T 005 X Ir CONNECTOR 36 37 Een Eu as z TAB CENTERL INE 1 432 1384015 17 0 99 y 925 039 X Y 010 E94 y 016 Figure 12 Physical dimensions Cheetah 15K 6 SAS Product Manual Rev B 42 Cheetah 15K 6 SAS Product Manual Rev B 7 0 Defect and error management Seagate continues to use innovative technologies to manage defects and errors These technologies are designed to increase data integrity perform drive self maintenance and validate proper drive operation SCSI defect and error management involves drive internal defect error management and SAS system error considerations errors in communications betwe
5. Receive Diagnostic Results 1Ch Y Supported Diagnostics pages 00h Y Translate page 40h Y Release 17h Y Release 10 57h Y Request Sense 03h Y Actual Retry Count bytes Y Extended Sense Y Field Pointer bytes Y Reserve 16h Y 3rd Party Reserve Y Extent Reservation N Reserve 10 56h Y 3rd Party Reserve Y Extent Reservation N Rezero Unit 01h Y Search Data Equal 31h N Search Data High 30h N Search Data Low 32h N Seek OBh Y Seek Extended 2Bh Y Send Diagnostics 1Dh Y Supported Diagnostics pages 00h Y Translate page 40h Y Set Limits 33h N Start Unit Stop Unit spindle ceases rotating 1Bh Y Synchronize Cache 35h Y Test Unit Ready 00h Y Verify 2Fh Y BYTCHK bit Y Write 0Ah Y Write and Verify 2Eh Y DPO bit Y Write Buffer modes 0 2 supported 3Bh Y Firmware Download option Y modes 5 7 Ah and Bh supported 3 Write Extended 2Ah Y DPO bit Y Cheetah 15K 6 SAS Product Manual Rev B 55 Table 21 Commands supported by Cheetah 15K 6 SAS family drives continued Command name Command code Supported FUA bit Y Write Long 3Fh Y Write Same 41h Y PBdata N LBdata N XDRead 52h N XDWrite 50h N XPWrite 51h N 1 Cheetah 15K 6 drives can format to 512 520 524 or 528 bytes per logical block 2 Warning Power loss during flash programming can result in firmware corruption This usually makes the drive inoperable 3 Reference Mode Sense command 1Ah for mode pages supported 4 Y Yes Comma
6. Where the media has an electrical length of gt 4 ns the procedure detailed in SFF 8410 or an eguivalent procedure shall be used to determine the impedance The receiver termination impedance specification applies to all receivers in a TxRx connection and covers all time points between the connector nearest the receiver the receiver and the transmission line terminator This measurement shall be made from that connector At the time point corresponding to the connection of the receiver to the transmission line the input capacitance of the receiver and its connection to the transmission line may cause the measured impedance to fall below the minimum impedances specified in this table The area of the impedance dip amplitude as p the reflection coefficient and duration in time caused by this capacitance is the receiver termination time constant The receiver time constant shall not be greater than the values shown in this table An approximate value for the receiver termination time constant is given by the product of the amplitude of the dip as p and its width in ps measured at the half amplitude point The amplitude is defined as being the difference in the reflection coefficient between the reflection coefficient at the nominal impedance and the reflection coefficient at the minimum impedance point The value of the receiver excess input capacitance is given by the following eguation C receiver termination time constant RO RR where
7. code 00 51 not supported code 05 51 reject code 04 51 G Good status 62 gradient 36 37 ground shift noise 67 grounding 49 H HDA 47 49 head and disc assembly See HDA heads read write data 11 heat removal 47 heat source 47 host eguipment 49 hot plugging the drive 16 humidity 37 humidity limits 36 Idie Read After Write 46 inguiry data 57 installation 47 interface commands supported 53 error rate 15 errors 16 illustrated 63 physical 62 reguirements 51 intermediate condition met good status 62 intermediate good status 62 internal data rate 11 internal defects errors 43 internal drive characteristics 11 82 IRAW 46 J jumpers 47 L latency average rotational 11 12 logical block address 13 logical block reallocation scheme 8 logical block size 8 12 logical segments 13 maintenance 15 maximum delayed motor start 23 24 25 26 maximum start current 23 24 25 26 media description 8 Media Pre Scan 45 miscellaneous feature support Adaptive caching 62 Asynchronous event notification 62 Automatic contingent allegiance 62 Deferred error handling 62 Parameter rounding 62 Queue tagging 62 Reporting actual retry count 62 Segmented caching 62 SMP 1 in Mode Select command 62 Synchronized locked spindle operation 62 Zero latency read 62 miscellaneous status support ACA active 62 ACA active faulted initiator 62 Busy 62 Check condition 62 Condition met good 62 Good 62 Intermediate conditi
8. return information 21 rotation speed 11 S safety 3 SAS interface 66 physical interface 62 task management functions 51 SAS documents 5 SAS Interface Manual 3 5 SCSI interface commands supported 53 seek error defined 16 rate 15 seek performance characteristics 11 seek time average typical 11 full stroke typical 11 single track typical 11 segmented caching 62 Self Monitoring Analysis and Reporting Technology 9 17 Serial Attached SCSI SAS Interface Manual 1 shielding 3 shipping 21 shipping container 36 shock 37 and vibration 37 shock mount 49 signal characteristics 67 single unit shipping pack kit 9 SMART 9 17 SMP 1 in Mode Select command 62 spindle brake 8 standards 3 start stop time 12 Sulfur 40 support services 79 surface stiffness allowable for non flat surface 49 switches 47 synchronized spindle operation 62 system chassis 49 83 T task management functions 51 Aborttask set 51 Clear ACA 51 Clear task set 51 terminate task 51 task management response codes 51 Function complete 00 51 Function not supported 05 51 Function reject 04 51 task set full status 62 technical support services 79 temperature 36 47 limits 36 non operating 36 regulation 3 See also cooling terminate task function 51 terminators 47 tracks per inch 11 transmitters 67 transporting the drive 21 U unformatted 9 Unrecoverable Errors 15 unrecovered media data 15 V vibration 37 39 W warranty 21 Z zero l
9. 0 66 0 66 Maximum starting current peak DC DC 30 3 1 78 peak AC AC 30 3 4 06 Delayed motor start max DC 30 1 4 0 04 Peak operating current Typical DCX 1 6 1 09 Maximum DC 30 1 1 12 Maximum peak DC 36 2 60 Table 16 ST3146356SS DC power requirements ST3146356SS ST3146356SS 1 5 Gbit mode 3 Gbit mode m Amps Amps Amps Voltage 5V 12V 2 12V 2 Regulation Ena 15 45 2 15 2 Avg idle current DCX 1 7 0 53 Maximum starting current peak DC DC 30 1 74 peak AC AC 36 2 3 82 Delayed motor start max DC 36 0 04 Peak operating current Typical DCX 11 6 0 58 0 95 0 61 0 95 Maximum DC 3c 1 0 61 0 96 0 64 0 96 Maximum peak DC 36 1 12 2 38 1 16 2 38 Cheetah 15K 6 SAS Product Manual Rev B Table 17 ST3146756SS FDE DC power requirements ST3146756SS FDE ST3146756SS FDE 1 5 Gbit mode 3 Gbit mode Amps Voltage 12V 2 12V 2 Regulation 5 15 2 5 2 Avg idle current DCX 1 7 0 55 0 55 Maximum starting current peak DC DC 3c 13 1 82 peak AC AC 3c 13 4 28 Delayed motor start max DC 30 1 4 0 04 Peak operating current 1 2 3 4 5 6 7 Typical DCX 1116 0 96 Maximum DC 36 1 0 97 Maximum peak DC 36 2 36 Measured with average reading DC ammeter or eguivalent sampling scope Instantaneous 12V current peaks will exceed these values Power supply at nominal voltage N number of dr
10. 00 4 00 2 00 0 00 0 0 50 0 100 0 150 0 200 0 250 0 300 0 350 0 400 0 450 0 VOs per Second Figure 7 ST3300056SS FDE 3 Gbit DC current and power vs input output operations per second Cheetah 15K 6 SAS Product Manual Rev B 33 ST3146356SS model Typical power dissipation under idle conditions in 3Gb operation is 9 06 watts 30 92 BTUs per hour To obtain operating power for typical random read operations refer to the following I O rate curve see Figure 4 Locate the typical I O rate for a drive in your system on the horizontal axis and read the corresponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 81314635688 CURRENT POWER vs THROUGHPUT SAS 3 0GB Random 8 Block Reads 16 00 5Volt A a 12 Volt A 14 00 4 Watts 0 00 0 0 50 0 100 0 150 0 200 0 250 0 300 0 350 0 400 0 450 0 VOs per Second Figure 8 ST3146356SS 3 Gbit DC current and power vs input output operations per second 34 Cheetah 15K 6 SAS Product Manual Rev B ST3146756SS FDE model in 3 Gbit operation Typical power dissipation under idle conditions in 3Gb operation is 9 15 watts 31 22 BTUs per hour To obtain operating power for typical random read operations refer to the following I O rate curve see Figure 4 Locate the typical I O rate for a drive in your system on the horizontal axis and read the corre
11. 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 ST3450856 S S CURRENT POWER vs THROUGHPUT SAS 3 0GB Random 8 Block Reads 0 0 50 0 100 0 150 0 200 0 250 0 300 0 1 Os per Second u 5Vok A 16 00 7 12 Volt A a Watts 14 00 0 00 350 0 400 0 Figure 4 30 ST3450856SS 3 Gbit DC current and power vs input output operations per second Cheetah 15K 6 SAS Product Manual Rev B ST3450056SS FDE model Typical power dissipation under idle conditions in 3Gb operation is 11 64 watts 39 72 BTUs per hour To obtain operating power for typical random read operations refer to the following I O rate curve see Figure 4 Locate the typical I O rate for a drive in your system on the horizontal axis and read the corresponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 ST3450056SS CURRENT POWER vs THROUGHPUT SAS 3 0GB Random 8 Block Reads 20 0 OKA 18 00 12 Volt A 4 Watts 16 00 14 00 v 12 00 9 10 002 8 00 6 00 4 00 2 00 0 00 0 0 50 0 100 0 150 0 200 0 250 0 300 0 350 0 400 0 1 Os per Second Figure 5 ST3450056SS FDE 3 Gbit DC current and power vs input output operations per second Cheetah 15K 6 SAS Product Manual Rev B 31 ST3300656SS model Typical power dissipation under
12. 6 Drive Self Test DST Drive Self Test DST is a technology designed to recognize drive fault conditions that gualify the drive as a failed unit DST validates the functionality of the drive at a system level There are two test coverage options implemented in DST 1 Extended test 2 Short text The most thorough option is the extended test that performs various tests on the drive and scans every logical block address LBA of the drive The short test is time restricted and limited in length it does not scan the entire media surface but does some fundamental tests and scans portions of the media If DST encounters an error during either of these tests it reports a fault condition If the drive fails the test remove it from service and return it to Seagate for service 5 2 6 1 DST failure definition The drive will present a diagnostic failed condition through the self tests results value of the diagnostic log page if a functional failure is encountered during DST The channel and servo parameters are not modified to test the drive more stringently and the number of retries are not reduced All retries and recovery processes are enabled during the test If data is recoverable no failure condition will be reported regardless of the number of retries required to recover the data The following conditions are considered DST failure conditions Seek error after retries are exhausted Track follow error after retries are exhaus
13. 9 1 1 task management functions 51 9 1 2 task management responses 51 9 2 Dual port Support ii 52 9 3 SCSI commands supported 53 9 3 1 INQUIFY datas its EB aa Ne a V CLR 57 9 3 2 Mode Sensedata 57 9 4 Miscellaneous operating features and conditions 62 9 4 1 SAS physical interface 62 9 4 2 Physical characteristics 65 9 4 3 Connector reguirements 65 9 4 4 Electrical deseription 66 9 4 5 PIN descriptions or eR der b Beta ao 66 9 4 6 SAS transmitters and receivers 67 9 4 7 POWOL ll dexvu eee eumd wal b Eu Eb ERE E e e dee ey eqs 67 9 5 Signal characteristics 67 9 5 1 Ready LED Out ii 67 9 5 2 Differential signals 68 Seagate Technology support services 79 Cheetah 15K 6 SAS Product Manual Rev B 1 0 Scope This manual describes Seagate Technology LLC Cheetah SAS Serial Attached SCSI disk drives Cheetah 15K 6 drives support the SAS Protocol specifications to the
14. Background Media Scan 45 backpanel 66 BMS 45 buffer data 8 space 13 busy status 62 C cache operation 13 cache segments 13 caching write data 14 Canadian Department of Communications 3 capacity Cheetah 15K 6 SAS Product Manual Rev B unformatted 11 check condition status 62 chemical pollutants 40 class B limit 3 clear ACA function 51 clear task set function 51 commands supported 53 condensation 37 condition met good status 62 connector illustrated 65 requirements 65 continuous vibration 39 cooling 47 corrosive environment 39 CRC error 16 Current profiles 27 customer service 21 D DAR 46 data heads read write 11 data rate internal 11 data transfer rate 12 DC power 66 requirements 23 defect and error management 43 defects 43 Deferred Auto Reallocation 46 deferred error handling 62 description 7 dimensions 40 disc rotation speed 11 drive 39 drive characteristics 11 drive mounting 40 49 drive select 66 dual port support 52 E electrical description of connector 66 signal characteristics 67 specifications 23 electromagnetic compatibility 3 electromagnetic susceptibility 40 EMI reguirements 3 environment 47 environmental limits 36 reguirements 15 81 environmental control 39 error management 43 rates 15 errors 43 F FCC rules and regulations 3 features 8 interface 51 firmware 8 corruption 56 flawed sector reallocation 8 Format command execution time 12 function complete
15. Cheetah 15K 6 SAS Product Manual Rev B 9 5 2 5 Receiver characteristics The drive receiver is A C coupled The receive network terminates the TxRx connection by a 100 ohm eguiva lent impedance as specified in table 33 The receiver operates within a BER of 1071 when a SAS signal with valid voltage and timing characteristics is delivered to the compliance point from a 100 ohm source The received SAS signal are considered valid if it meets the voltage and timing limits specified in table 30 Additionally the receiver operates within the BER objective when the signal at a receiving phy has the addi tional sinusoidal jitter present that is specified in table 32 and the common mode signal Vcy over frequency range Fon as specified in table 28 The jitter tolerance is shown in Figure 20 for all Rx compliance points in a TxRx connection The figure given assumes that any external interference occurs prior to the point at which the test is applied When testing the jitter tolerance capability of a receiver the additional 0 1 UI of sinusoidal jitter may be reduced by an amount proportional to the actual externally induced interference between the applica tion point of the test and the input to the receiving phy The additional jitter reduces the eye opening in both voltage and time Cheetah 15K 6 SAS Product Manual Rev B 77 78 Cheetah 15K 6 SAS Product Manual Rev B 10 0 Seagate Technology support services Internet For information rega
16. Data errors use retries and correction Application of ECC on the fly correction alone is not con sidered a Recovered Data error Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a read and using write bits transferred for recoverable errors occurring during a write 5 1 2 Unrecoverable Errors Unrecoverable Data Errors Sense Key 03h are specified at less than 1 sector in error per 10 bits trans ferred Unrecoverable Data Errors resulting from the same cause are treated as 1 error for that block Cheetah 15K 6 SAS Product Manual Rev B 15 5 1 3 Seek errors A seek error is defined as a failure of the drive to position the heads to the addressed track After detecting an initial seek error the drive automatically performs an error recovery process If the error recovery process fails a seek positioning error Error code 15h or 02h will be reported with a Hardware error 04h in the Sense Key Recoverable seek errors are specified at Less than 10 errors in 10 seeks Unrecoverable seek errors Sense Key 04h are classified as drive failures 5 1 4 Interface errors An interface error is defined as a failure of the receiver on a port to recover the data as transmitted by the device port connected to the receiver The error may be detected as a running disparity error illegal code loss of word sync or CRC error 5 2 Reliability and service You can enhance the reli
17. a total jitter probability of 10712 At this level of probability direct visual comparison between the mask and actual signals is not a valid method for determining compliance with the jitter output requirements c With a measurement bandwidth of 1 5 times the baud rate i e 4 5 GHz for 3 0 Gbps d The skew measurement shall be made at the midpoint of the transition with a repeating 0101b pattern on the physical link The same stable trigger coherent to the data stream shall be used for both the Rx and Rx signals Skew is defined as the time difference between the means of the midpoint crossing times of the Rx signal and the Rx signal e Near end crosstalk is the unwanted signal amplitude at receiver terminals DR CR and XR coupled from signals and noise sources other than the desired signal Refer to SFF 8410 9 5 2 3 1 Jitter Table 31 defines the maximum allowable jitter Table 31 Maximum allowable jitter 1 5 Gbps gt 3 0 Gbps Deterministic jitter Total jitterc dref Deterministic jittere Total jitterc def 72 Units are in UI The values for jitter in this section are measured at the average amplitude point Total jitter is the sum of deterministic jitter and random jitter If the actual deterministic jitter is less than the maximum specified then the random jitter may increase as long as the total jitter does not exceed the specified maximum total jitter Total jitter is specified at a probability of 1077
18. accordance with buffer full ratio rules See the explanation provided with the information about Mode Page 02h disconnect reconnect control in the SAS Interface Manual The following is a simplified description of the prefetch cache operation Case A read command is received and all of the requested logical blocks are already in the cache 1 Drive transfers the requested logical blocks to the initiator Case B A Read command requests data and at least one requested logical block is not in any segment of the cache 1 The drive fetches the requested logical blocks from the disk and transfers them into a segment and then from there to the host in accordance with the Mode Select Disconnect Reconnect parameters page 02h 2 lfthe prefetch feature is enabled refer to section 4 5 2 for operation from this point Each cache segment is actually a self contained circular buffer whose length is an integer number of logical blocks The drive dynamically creates and removes segments based on the workload The wrap around capa bility of the individual segments greatly enhances the cache s overall performance Cheetah 15K 6 SAS Product Manual Rev B 13 Note The size of each segment is not reported by Mode Sense command page 08h bytes 14 and 15 The value OXFFFF is always reported regardless of the actual size of the segment Sending a size specification using the Mode Select command bytes 14 and 15 does not set up a new segment size If
19. and random jitter levels as were used in the high frequency sweep c Sinusoidal swept frequency 900 kHz to 5 MHz d Sinusoidal swept frequency 1 800 kHz to 5 MHz No value is given for random jitter For compliance with this standard the actual random jitter amplitude shall be the value that brings total jitter to the stated value at a probability of 10 The additional 0 1 UI of sinusoidal jitter is added to ensure the receiver has sufficient operating margin in the presence of external interference Deterministic jitter 900 kHz to 750 MHz Deterministic jitter 1 800 kHz to 1 500 MHz The deterministic and total values in this table apply to jitter after application of a single pole high pass frequency weighting function that progressively attenuates jitter at 20 dB decade below a frequency of bit rate 1 667 0 50 9 5 2 3 3 Compliant jitter test pattern CJTPAT The CJTPAT within a compliant protocol frame is used for all jitter testing unless otherwise specified See the SAS Interface Manual for definition of the reguired pattern on the physical link and information regarding spe cial considerations for scrambling and running disparity 9 5 2 3 4 Impedance specifications Table 33 defines impedance requirements Table 33 Impedance requirements Sheet 1 of 2 Requirement Units 1 5 Gbps 3 0 Gbps Time domain reflectometer rise time 20 to 80 959 5 ps 100 50 Media PCB or cable Differential impedan
20. characteristics Table 29 specifies the signal requirements at the transmitter end of a TxRx connection as measured into the zero length test load All specifications are based on differential measurements The OOB sequence is performed at signal voltage levels corresponding to the lowest supported transfer rate Table 29 specifies the signal characteristics Table 29 Transmitter signal characteristics Signal characteristic Units 3 0 Gbps Skew ps 15 Tx Off Voltage mV P P 50 Maximum rise fall time ps 137 Minimum rise fall time ps 67 Maximum transmitter output imbalance Yo 10 OOB offset delta mV 25 OOB common mode delta mV 50 a All tests in this table shall be performed with zero length test load shown in figure 22 b The skew measurement shall be made at the midpoint of the transition with a repeating 0101b pattern on the physical link The same stable trigger coherent to the data stream shall be used for both the Tx and Tx signals Skew is defined as the time difference between the means of the midpoint crossing times of the Tx signal and the Tx signal c The transmitter off voltage is the maximum A C voltage measured at compliance points when the transmitter is unpowered or transmitting D C idle e g during idle time of an OOB signal d Rise fall times are measured from 20 to 80 of the transition with a repeating 0101b pattern on the physical link e The maximum differe
21. containers are easily identified by the Seagate Approved Package label Shipping a drive in a non approved container voids the drive warranty Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in tran sit Contact your authorized Seagate distributor to purchase additional boxes Seagate recommends shipping by an air ride carrier experienced in handling computer equipment Product repair and return information Seagate customer service centers are the only facilities authorized to service Seagate drives Seagate does not sanction any third party repair facilities Any unauthorized repair or tampering with the factory seal voids the warranty Cheetah 15K 6 SAS Product Manual Rev B 21 22 Cheetah 15K 6 SAS Product Manual Rev B 6 0 Physical electrical specifications This section provides information relating to the physical and electrical characteristics of the drive 6 1 AC power requirements None 6 2 DC power requirements The voltage and current requirements for a single drive are shown below Values indicated apply at the drive connector Table 12 ST3450856SS DC power requirements ST3450856SS ST3450856SS 1 5 Gbit mode 3 Gbit mode Amps Amps Voltage 412V 2 412V 2 Regulation 5 5 2 5 2 Avg idle current DCX 1 7 0 75 0 75 Maximum starting current peak DC DC 30 3 1 93 peak AC AC 30 3 4 36 Delayed motor start max DC 30 1 4 0 60
22. error rate is considered to be unacceptable If the number of errors does not exceed the threshold before the interval expires the error rate is considered to be acceptable In either case the inter val and failure counters are reset and the process starts over Predictive failures S M A R T signals predictive failures when the drive is performing unacceptably for a period of time The firm ware keeps a running count of the number of times the error rate for each attribute is unacceptable To accom plish this a counter is incremented each time the error rate is unacceptable and decremented not to exceed zero whenever the error rate is acceptable If the counter continually increments such that it reaches the pre dictive threshold a predictive failure is signaled This counter is referred to as the Failure History Counter There is a separate Failure History Counter for each attribute 5 2 5 Thermal monitor Cheetah 15K 6 drives implement a temperature warning system which 1 Signals the host if the temperature exceeds a value which would threaten the drive 2 Signals the host if the temperature exceeds a user specified value 3 SavesaS M A R T data frame on the drive which exceeds the threatening temperature value A temperature sensor monitors the drive temperature and issues a warning over the interface when the tem perature exceeds a set threshold The temperature is measured at power up and then at ten minute intervals after
23. extent described in this manual The SAS Interface Manual part number 100293071 describes the general SAS characteristics of Cheetah 15K 6 and other Seagate SAS drives Model Number Full Disk Encryption FDE ST 345085655 No ST 330065655 No ST3146356SS No ST3450056SS Yes ST3300056SS Yes ST3146756SS Yes Cheetah 15K 6 SAS Product Manual Rev B Cheetah 15K 6 SAS Product Manual Rev B 2 0 Standards compliance and reference documents The drive has been developed as a system peripheral to the highest standards of design and construction The drive depends on its host eguipment to provide adeguate power and environment for optimum performance and compliance with applicable industry and governmental regulations Special attention must be given in the areas of safety power distribution shielding audible noise control and temperature regulation In particular the drive must be securely mounted to guarantee the specified performance characteristics Mounting by bot tom holes must meet the reguirements of Section 8 3 2 1 Standards The Cheetah 15K 6 SAS family complies with Seagate standards as noted in the appropriate sections of this manual and the Seagate SAS Interface Manual part number 100293071 The Cheetah 15K 6 disk drive is a UL recognized component per UL1950 CSA certified to CAN CSA C22 2 No 950 95 and VDE certified to VDE 0805 and EN60950 The security features of Cheetah 15K 6 SAS FDE models are based
24. idle conditions in 3Gb operation is 10 26 watts 35 01 BTUs per hour To obtain operating power for typical random read operations refer to the following I O rate curve see Figure 4 Locate the typical I O rate for a drive in your system on the horizontal axis and read the corresponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 ST3300656SS CURRENT POWER vs THROUGHPUT SAS 3 0GB Random 8 Block Reads moo 5Volt A 16 00 E 12 Vott A 4 Watts 14 00 9 0 50 0 100 0 150 0 200 0 250 0 300 0 350 0 400 0 VOs per Second Figure 6 ST3300656SS 3 Gbit DC current and power vs input output operations per second 32 Cheetah 15K 6 SAS Product Manual Rev B ST3300056SS FDE model Typical power dissipation under idle conditions in 3Gb operation is 10 42 watts 35 56 BTUs per hour To obtain operating power for typical random read operations refer to the following I O rate curve see Figure 4 Locate the typical I O rate for a drive in your system on the horizontal axis and read the corresponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 ST3300056 SS CURRENT POWER vs THROUGHPUT SAS 3 0GB Random 8 Block Reads 18 00 5Vo A 16 00 9 12 Volt A 4 Watts 14 00 12 00 10 00 ga 8 spem ramo d 6
25. in fig ure 23 and figure 24 Compliance with the TCTF test load requirement is verified by measuring the signal produced by the transmit ter through a physical compliance interconnect attached to the transmitter Compliance with the zero length test load reguirement verified by measurement made across a load equiva lent to the zero length load shown in figure 22 For both test load cases the transmitter delivers the output voltages and timing listed in table 30 at the desig nated compliance points The default mask is IR for intra cabinet TxRx connections The eye masks are shown in 9 5 2 1 Figure 21 shows the compliance interconnect test load 50 ohm SAS internal connector Figure 21 Compliance interconnect test load Cheetah 15K 6 SAS Product Manual Rev B 75 Figure 22 shows the zero length test load 10nF_ 50 ohm De K 10 nF Tx K A SAS internal connector Figure 22 Zero length test load Figure 23 shows an ISI loss example at 3 0 Gbps S dB Compliance interconnect magnitude response and ISI loss example for 3 0 Gbps ISI loss gt 3 9 dB Sample compliance interconnect Frequency GHz Figure 23 ISI loss example at 3 0 Gbps Figure 24 shows an ISI loss example at 1 5 Gbps S dB Compliance interconnect magnitude response and ISI loss example for 1 5 Gbps Sample compliance interconnect Frequency GHz Figure 24 ISlloss example at 1 5 Gbps 76
26. of the bits in byte 02 are ones all of these bits are changeable The changeable values list can only be changed by downloading new firmware into the flash E PROM Note Because there are often several different versions of drive control firmware in the total population of drives in the field the Mode Sense values given in the following tables may not exactly match those of some drives The following tables list the values of the data bytes returned by the drive in response to the Mode Sense com mand pages for SCSI implementation see the SAS Interface Manual Definitions DEF Default value Standard OEM drives are shipped configured this way CHG Changeable bits indicates if default value is changeable 58 Cheetah 15K 6 SAS Product Manual Rev B 9 3 2 1 ST3450856SS ST3450056SS Mode Sense data MODE DATA HEADER 01 2e 00 10 00 00 00 08 MODE PAGES DEF 81 0a c0 Ob ff 00 00 00 05 00 ff ff CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff DEF 82 0e 00 00 00 00 00 00 00 00 01 3a 00 00 00 CHG 82 0e 00 00 00 00 00 00 00 00 Ef ff 00 00 00 DEF 83 16 bb d0 00 00 00 00 03 80 04 c4 02 00 00 CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 DEF 84 16 02 57 08 08 00 00 00 00 00 00 00 00 00 CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 DEF 87 0a 00 Ob ff 00 00 00 00 00 ff ff CHG 87 0a Of ff 00 00 00 00 00 00 ff ff DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 DEF 8a 0
27. on hours BMS will dis able Pre Scan to restore full performance to the system Cheetah 15K 6 SAS Product Manual Rev B 45 7 6 Deferred Auto Reallocation Deferred Auto Reallocation DAR simplifies reallocation algorithms at the system level by allowing the drive to reallocate unreadable locations on a subseguent write command Sites are marked for DAR during read oper ations performed by the drive When a write command is received for an LBA marked for DAR the auto reallo cation process is invoked and attempts to rewrite the data to the original location If a verification of this rewrite fails the sector is re mapped to a spare location This is in contrast to the system having to use the Reassign Command to reassign a location that was unread able and then generate a write command to rewrite the data DAR is most effective when AWRE and ARRE are enabled this is the default setting from the Seagate factory With AWRE and ARRE disabled DAR is unable to reallocate the failing location and will report an error sense code indicating that a write command is being attempted to a previously failing location 7 7 Idle Read After Write Idle Read After Write IRAW utilizes idle time to verify the integrity of recently written data During idle periods no active system requests the drive reads recently written data from the media and compares it to valid write command data resident in the drives data buffer Any sectors that fail the comparison
28. result in the invocation of a rewrite and auto reallocation process The process attempts to rewrite the data to the original location If a verification of this rewrite fails the sector is re mapped to a spare location 46 Cheetah 15K 6 SAS Product Manual Rev B 8 0 Installation Cheetah 15K 6 disk drive installation is a plug and play process There are no jumpers switches or termina tors on the drive SAS drives are designed to be used in a host system that provides a SAS compatible backplane with bays designed to accommodate the drive In such systems the host system typically provides a carrier or tray into which you need to mount the drive Mount the drive to the carrier or tray provided by the host system using four 6 32 UNC screws Do not over tighten or force the screws You can mount the drive in any orientation Note SAS drives are designed to be attached to the host system without I O or power cables If you intend the use the drive in a non backplane host system connecting the drive using high quality cables is acceptable as long as the I O cable length does not exceed 4 meters 13 1 feet Slide the carrier or tray into the appropriate bay in your host system using the instructions provided by the host system This connects the drive directly to your system s SAS connector The SAS connector is normally located on a SAS backpanel See Section 9 4 1 for additional information about these connectors Power is supplied throu
29. times given do not include time taken to perform reallocations Reallocations are performed when the ARRE bit for reads or AWRE bit for writes is one the RC bit is zero and the recov ery time limit for the command has not yet been met Time needed to perform reallocation is not counted against the recovery time limit When the RC bit is one reallocations are disabled even if the ARRE or AWRE bits are one The drive will still perform data recovery actions within the limits defined by the Read Retry Count Write Retry Count and Recovery Time Limit parameters However the drive does not report any unrecovered errors Table 18 Read and write retry count maximum recovery times Maximum recovery time per Maximum recovery time per Read retry count LBA cumulative msec Write retry count BA cumulative msec 0 51 87 0 23 94 1 59 85 1 35 91 2 203 49 2 55 86 3 219 45 3 67 83 4 231 42 4 119 79 5 297 38 5 default 147 72 6 323 62 7 355 54 8 439 39 9 507 39 10 539 31 11 567 24 12 1 460 85 13 default 1 468 74 1 These values are subject to change Setting these retry counts to a value below the default setting could result in degradation of the unrecov ered error rate which may exceed the value given in this product manual A setting of zero 0 will result in the drive not performing error recovery For example suppose the read write recovery page has the RC bit set to 0 re
30. where the various com mands are discussed 7 4 Background Media Scan Background Media Scan BMS is a self initiated media scan BMS is defined in the T10 document SPC 4 available from the T10 committee BMS performs sequential reads across the entire pack of the media while the drive is idle In RAID arrays BMS allows hot spare drives to be scanned for defects prior to being put into service by the host system On regular duty drives if the host system makes use of the BMS Log Page it can avoid placing data in suspect locations on the media Unreadable and recovered error sites will be logged or reallocated per ARRE AWRE settings With BMS the host system can consume less power and system overhead by only checking BMS status and results rather than tying up the bus and consuming power in the process of host initiated media scanning activ ity Since the background scan functions are only done during idle periods BMS causes a negligible impact to sys tem performance The first BMS scan for a newly manufactured drive is performed as quickly as possible to verify the media and protect data by setting the Start time after idle to 5ms all subseguent scans begin after 500ms of idle time Other features that normally use idle time to function will function normally because BMS functions for bursts of 800ms and then suspends activity for 100ms to allow other background functions to operate BMS interrupts immediately to service host comma
31. 0 0 00 00 00 00 02 03 00 Of f 80 cO 00 ff 00 00 00 00 00 08 00 ff 00 EL 00 00 00 00 00 HM O o HM O e Fh Of DATA 73 2F 00 00 00 00 00 00 00 03 00 00 00 LI 00 00 00 00 00 do Cie E 00 ff E 00 ff f 00 00 00 08 00 00 00 00 00 00 00 00 00 00 00 EL 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 If 00 00 h 02 05 ff 00 00 03 00 00 00 00 00 ff EE 00 00 00 00 00 f ff 00 00 00 00 00 80 00 00 00 00 00 ff ff 00 00 00 00 00 ff 8 ff ff ff ff 01 3a ff ff 04 c4 00 00 00 00 00 00 ff ff ff ff ff ff 00 00 06 cc 00 00 00 04 00 00 00 01 ff ff 9 A B C DEF 00 00 02 00 00 00 80 20 00 00 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 00 00 01 00 00 00 00 00 09 00 00 00 00 00 00 00 00 00 00 00 5f 00 00 00 00 00 40 00 00 00 3a a7 00 00 ASCII SS ni 00 00 00 00 00 00 00 00 61 9 4 Miscellaneous operating features and conditions Table 23 lists various features and conditions A Y in the support column indicates the feature or condition is supported An N in the support column ind
32. 0 500 Hz 1 2 gRMS 6 4 5 Acoustics Sound power during idle mode shall be 3 5 bels typical when measured to ISO 7779 specification Sound power while operating shall be 3 7 bels typical when measured to ISO 7779 specification There will not be any discrete tones more than 10 dB above the masking noise on typical drives when mea sured according to Seagate specification 30553 001 There will not be any tones more than 24 dB above the masking noise on any drive 6 4 6 Air cleanliness The drive is designed to operate in a typical office environment with minimal environmental control 6 4 7 Corrosive environment Seagate electronic drive components pass accelerated corrosion testing eguivalent to 10 years exposure to light industrial environments containing sulfurous gases chlorine and nitric oxide classes G and H per ASTM B845 However this accelerated testing cannot duplicate every potential application environment Cheetah 15K 6 SAS Product Manual Rev B 39 Users should use caution exposing any electronic components to uncontrolled chemical pollutants and corro sive chemicals as electronic drive component reliability can be affected by the installation environment The sil ver Copper nickel and gold films used in Seagate products are especially sensitive to the presence of sulfide chloride and nitrate contaminants Sulfur is found to be the most damaging In addition electronic components should never be exposed to condensing wate
33. 0 04 Peak operating current Typical DCX 11161 1 1 19 Maximum DC 30 1 1 21 Maximum peak DC 30 2 74 Cheetah 15K 6 SAS Product Manual Rev B 23 Table 13 ST3450056SS FDE DC power requirements ST3450056SS FDE ST3450056SS FDE 1 5 Gbit mode 3 Gbit mode Amps Voltage 12V 2 12V 2 Regulation 5 5 2 5 2 Avg idle current DCX 1 7 0 77 0 77 Maximum starting current peak DC DC 30 3 1 96 peak AC AC 3c 3 4 40 Delayed motor start max DC 30 1 4 0 04 Peak operating current Typical DCX 11161 1 1 21 Maximum DC 30 1 1 24 Maximum peak DC 30 2 72 Table 14 ST3300656SS DC power requirements ST3300656SS ST3300656SS 1 5 Gbit mode 3 Gbit mode Amps Amps Amps E Voltage 12V 2 5V 12V 2 Regulation 15 45 2 15 2 Avg idle current DCX 1 7 0 63 Maximum starting current peak DC DC 30 1 76 peak AC AC 30 3 96 Delayed motor start max DC 30 1 4 0 60 0 04 0 63 0 04 Peak operating current Typical DCX 1116 0 58 1 06 0 60 1 06 Maximum DC 36 1 0 64 1 07 0 65 1 08 Maximum peak DC 36 1 14 2 48 1 16 2 44 24 Cheetah 15K 6 SAS Product Manual Rev B Table 15 ST3300056SS FDE DC power requirements ST3300056SS FDE ST3300056SS FDE 1 5 Gbit mode 3 Gbit mode Amps Voltage 12V 2 12V 2 Regulation 5 5 2 5 2 Avg idle current DCX 1 7
34. 2 The deterministic and total values in this table apply to jitter after application of a single pole high pass frequency weighting function that progressively attenuates jitter at 20 dB decade below a frequency of bit rate 1 667 If total jitter received at any point is less than the maximum allowed then the jitter distribution of the signals is allowed to be asymmetric The total jitter plus the magnitude of the asymmetry shall not exceed the allowed maximum total jitter The numerical difference between the average of the peaks with a BER lt 101 and the average of the individual events is the measure of the asymmetry Jitter peak to peak measured lt maximum total jitter Asymmetry Cheetah 15K 6 SAS Product Manual Rev B 9 5 2 3 2 Receiver jitter tolerance Table 32 defines the amount of jitter the receiver shall tolerate Table 32 Receiver jitter tolerance 1 5 Gbps 3 0 Gbps Sinusoidal Deterministic Total Sinusoidal Deterministic Total jitter jitter jitter jitterb d jitter 9h jitter 0 10 0 35 0 65 0 10 0 35 0 65 Units are in UI om The jitter values given are normative for a combination of deterministic jitter random jitter and sinusoidal jitter that receivers shall be able to tolerate without exceeding a BER of 10712 Receivers shall tolerate sinusoidal jitter of progressively greater amplitude at lower frequencies according to the mask in figure 20 with the same deterministic jitter
35. 33 35 56 53 53 ST3146756SS FDE 53 54 33 31 34 36 37 35 56 53 53 Cheetah 15K 6 SAS Product Manual Rev B 57 9 3 2 Mode Sense data The Mode Sense command provides a way for the drive to report its operating parameters to the initiator The drive maintains four sets of mode parameters 1 Default values Default values are hard coded in the drive firmware stored in flash E PROM nonvolatile memory on the drive s PCB These default values can be changed only by downloading a complete set of new firmware into the flash E PROM An initiator can request and receive from the drive a list of default values and use those in a Mode Select command to set up new current and saved values where the values are change able Saved values Saved values are stored on the drive s media using a Mode Select command Only parameter values that are allowed to be changed can be changed by this method Parameters in the saved values list that are not changeable by the Mode Select command get their values from default values storage When power is applied to the drive it takes saved values from the media and stores them as current val ues in volatile memory It is not possible to change the current values or the saved values with a Mode Select command before the drive achieves operating speed and is ready An attempt to do so results in a Check Condition status On drives requiring unique saved values the required unique saved values are st
36. 3Volts Port A Ground P4 Ground Port A_ out Diff output pair P5 Ground Port A_out P6 Ground P7 5 Volts charge P8 5 Volts Diff input pair P9 5 Volts P10 Ground P11 Ready LED Open collector out Diff output pair P12 Ground P13 12 Volts charge Port B Ground P14 12 Volts P15 12 Volts Short pin to support hot plugging NC No connection in the drive 66 Cheetah 15K 6 SAS Product Manual Rev B 9 4 6 SAS transmitters and receivers A typical SAS differential copper transmitter and receiver pair is shown in Figure 17 The receiver is AC cou pling to eliminate ground shift noise Differential Transfer Medium Figure 17 SAS transmitters and receivers 9 4 7 Power The drive receives power 45 volts and 412 volts through the SAS device connector Three 12 volt pins provide power to the drive 2 short and 1 long The current return for the 12 volt power supply is through the common ground pins The supply current and return current must be distributed as evenly as possible among the pins Three 5 volt pins provide power to the drive 2 short and 1 long The current return for the 5 volt power sup ply is through the common ground pins The supply current and return current must be distributed as evenly as possible among the pins Current to the drive through the long power pins may be limited by the system to reduce inrush current to the drive dur
37. AS standard Table 28 defines the general interface characteristics Table 28 General interface characteristics Characteristic 1 5 Gbps 3 0 Gbps Bit rate nominal 1 500 3 000 Unit interval Ul nominal 666 6 333 3 Impedance nominal differential 100 100 Transmitter transients maximum 1 2 1 2 Receiver transients maximum V 1 2 1 2 9 5 2 1 Eye masks 9 5 2 1 1 Eye masks overview The eye masks are graphical representations of the voltage and time limits on the signal at the compliance point The time values between X1 and 1 X1 cover all but 10 12 of the jitter population The random content of the total jitter population has a range of 7 standard deviations 68 Cheetah 15K 6 SAS Product Manual Rev B 9 5 2 1 2 Receive eye mask Figure 18 describes the receive eye mask This eye mask applies to jitter after the application of a single pole high pass freguency weighting function that progressively attenuates jitter at 20 dB decade below a freguency of bit rate 1 667 Absolute amplitude in V 1 X2 Normalized time in U Figure 18 Receive eye mask Verifying compliance with the limits represented by the receive eye mask should be done with reverse channel traffic present in order that the effects of crosstalk are taken into account 9 5 2 1 3 Jitter tolerance masks Figure 19 describes the receive tolerance eye masks and is constructed using the X2 and Z2 values given in tabl
38. B v CORING ALLOMED N THIS AREA gt lt 4 40 0 15 RO 30 0 08 C SEE Detail 2 lt 1 95 0 08 I EN V 0 35 0 05 2 3 90 0 15 lt SECTION C C SECTION A A 0 08 0 05 CONTACT SURFACE FLUSH TO DATUM A 0 03 ee 2 65 M 1 90 0 08 1 23 0 05 1 k S E lo De 2 40 amp 0 10 A v SECTION B B 0 08 0 D Figure 16 SAS connector dimensions 9 4 2 Physical characteristics This section defines physical interface connector 9 4 3 Connector reguirements The SAS connector on the drive complies with SFF 8482 Contact your preferred connector manufacturer for mating part information The SAS device connector is illustrated in Figures 15 and 16 Cheetah 15K 6 SAS Product Manual Rev B 65 9 4 4 Electrical description SAS drives use the device connector for DC power SAS interface Activity LED This connector is designed to either plug directly into a backpanel or accept cables 9 4 5 Pin descriptions This section provides a pin out of the SAS device and a description of the functions provided by the pins Table25 SAS pin descriptions Pin Signal name Signal type Pin Signal name Signal type S1 Port A Ground P1 NC reserved 3 3Volts Port A_in Diff input pair P2 NC reserved 3 3Volts Port A_in P3 NC reserved 3
39. Cheetah 15K 6 SAS Product Manual Rev B 4 0 Performance characteristics This section provides detailed information concerning performance related characteristics and features of Cheetah 15K 6 drives 4 1 Internal drive characteristics ST3450856SS ST3300656SS ST3146356SS ST3450056SS ST3300056SS ST3146756SS Drive capacity 450 300 146 Gbytes formatted rounded off value Read write data heads 8 6 3 Tracks per inch 150 000 150 000 150 000 TPI Peak bits per inch 1 100 1 100 1 100 KBPI Areal Density 165 165 165 Gbits inch Internal data rate 1 95 1 95 1 95 Gbits sec max disk rotation speed 15k 15k 15k RPM Avg rotational latency 2 0 2 0 2 0 msec One Gbyte eguals one billion bytes when referring to hard drive capacity Accessible capacity may vary depending on operating environment and formatting 4 2 Seek time See Section 9 4 1 SAS physical interface on page 62 and the SAS Interface Manual part number 100293071 for additional timing details 4 2 1 Access time Not Including controller overhead 2 msec Read Write Average Typical 3 4 3 9 Single track Typical 0 20 0 44 Full stroke Typical 6 43 7 12 1 Typical access times are measured under nominal conditions of temperature voltage and horizontal orientation as measured on a representative sample of drives 2 Access to data access time latency time Cheetah 15K 6 SAS Product Manual Rev B 11 4 2 2 Format command execution time minutes When changing secto
40. MC Framework requirements of Australia s Spectrum Man agement Agency SMA Korean MIC If this model has the Korean Ministry of Information and Communication MIC logo it complies with paragraph 1 of Article 11 of the Electromagnetic Compatibility EMC Control Regulation and meets the Electromagnetic Compatibility Framework requirements of the Radio Research Laboratory RRL Ministry of Information and Communication Republic of Korea Taiwanese BSMI If this model has two Chinese words meaning EMC certification followed by an eight digit identification num ber as a Marking it complies with Chinese National Standard CNS 13438 and meets the Electromagnetic Compatibility EMC Framework requirements of the Taiwanese Bureau of Standards Metrology and Inspec tion BSMI 2 3 European Union Restriction of Hazardous Substances RoHS The European Union Restriction of Hazardous Substances RoHS Directive restricts the presence of chemical substances including Lead Pb in electronic products effective July 2006 A number of parts and materials in Seagate products are procured from external suppliers We rely on the rep resentations of our suppliers regarding the presence of RoHS substances in these parts and materials Our supplier contracts require compliance with our chemical substance restrictions and our suppliers document their compliance with our requirements by providing material content declarations for all parts and material
41. Product Manual Rev B 47 If forced air is determined to be necessary possible air flow patterns are shown in Figure 13 The air flow pat terns are created by one or more fans either forcing or drawing air as shown in the illustrations Conduction convection or other forced air flow patterns are acceptable as long as the temperature measurement guide lines of Section 6 4 1 are met it Note Air flows in the direction shown back to front Sa or in reverse direction front to back Above unit NS x Pes Under unit s Note Air flows in the direction shown or in reverse direction side to side Figure 13 Air flow 48 Cheetah 15K 6 SAS Product Manual Rev B 8 3 Drive mounting Mount the drive using the bottom or side mounting holes If you mount the drive using the bottom holes ensure that you do not physically distort the drive by attempting to mount it on a stiff non flat surface The allowable mounting surface stiffness is 80 Ib in 14 0 N mm The following equation and paragraph define the allowable mounting surface stiffness KxX F lt 15b 67N where K is the mounting surface stiffness units in Ib in or N mm and X is the out of plane surface distortion units in inches or millimeters The out of plane distortion X is determined by defining a plane with three of the four mounting points fixed and evaluating the out of plane deflection of the fourth mounting point when a known force F is applied
42. RO RR is the parallel combination of the transmission line characteristic impedance and termination resistance at the receiver The difference in measured impedance to ground on the plus and minus terminals on the interconnect transmitter or receiver with a differential test signal applied to those terminals 9 5 2 4 Electrical TxRx connections TxRx connections may be divided into TxRx connection segments In a single TxRx connection individual TxRx connection segments may be formed from differing media and materials including traces on printed wir ing boards and optical fibers This subclause applies only to TxRx connection segments that are formed from electrically conductive media Each electrical TxRx connection segment shall comply with the impedance requirements of table 33 for the media from which they are formed An equalizer network if present shall be part of the TxRx connection TxRx connections that are composed entirely of electrically conducting media shall be applied only to homoge nous ground applications e g between devices within an enclosure or rack or between enclosures intercon nected by a common ground return or ground plane 9 5 2 4 1 Transmitter characteristics The drive are D C coupled 74 Cheetah 15K 6 SAS Product Manual Rev B A combination of a zero length test load and the transmitter compliance transfer function TCTF test load methodology is used for the specification of transmitter ch
43. T bit egual to 0 the drive becomes ready for normal operations within 20 seconds excluding the error recovery procedure 12 Cheetah 15K 6 SAS Product Manual Rev B If the drive receives a START STOP UNIT command with the START bit egual to 0 before receiving a NOTIFY ENABLE SPINUP primitive the drive waits for a START STOP UNIT command with the START bit egual to 1 After receiving a START STOP UNIT command with the START bit equal to 1 the drive waits for a NOTIFY ENABLE SPINUP primitive After receiving a NOTIFY ENABLE SPINUP primitive through either port the drive becomes ready for normal operations within 20 seconds excluding the error recovery procedure If the drive receives a START STOP UNIT command with the START bit and IMMED bit egual to 1 and does not receive a NOTIFY ENABLE SPINUP primitive within 5 seconds the drive fails the START STOP UNIT command The START STOP UNIT command may be used to command the drive to stop the spindle Stop time is 30 sec onds maximum from removal of DC power There is no power control switch on the drive 4 4 Prefetch multi segmented cache control The drive provides a prefetch read look ahead and multi segmented cache control algorithms that in many cases can enhance system performance Cache refers to the drive buffer storage space when it is used in cache operations To select this feature the host sends the Mode Select command with the proper values in the applicable bytes in pa
44. a 02 00 00 00 00 00 00 00 Oe c4 CHG 8a 0a 03 0 00 00 00 00 00 00 00 00 DEF 18 06 06 00 00 00 00 00 CHG 18 06 00 00 00 00 00 00 DEF 99 06 06 00 07 do 00 00 CHG 99 06 10 00 ff ff ff ff DEF 9a 0a 00 02 00 00 00 05 00 00 00 04 CHG 9a 0a 00 03 ff ff ff ff 00 00 00 00 DEF 9c 0a 10 00 0 CHG 9c 0a 9d Of 00 00 00 00 00 00 01 Ef ff ff r ff if If Fh O DEF 80 06 00 80 0 CHG 80 06 b7 cO 0 00 00 00 00 00 00 Fh Fh READ CAPACITY DATA READ BUFFER 0 12 3 4 5 6 7 8 9 A B C D E F 000000 34 65 F8 6F 00 00 02 00 00 00 01 00 00 00 00 00 01 00 00 00 00 00 Cheetah 15K 6 SAS Product Manual Rev B 09 00 00 00 00 00 4e 00 00 00 00 00 00 5f 00 00 00 00 00 40 00 00 00 3a a7 00 00 ASCII 00 00 00 00 00 00 00 00 59 9 3 2 2 ST3300656SS ST3300056SS Mode Sense data MODE DATA HEADER 01 2e 00 10 00 00 00 08 MODE PAGES DEF 81 0a c0 Ob ff 00 00 00 05 00 ff ff CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff DEF 82 0e 00 00 00 00 00 00 00 00 01 3a 00 00 00 00 CHG 82 0e 00 00 00 00 00 00 00 00 ff ff 00 00 00 00 DEF 83 16 bb do 00 00 00 00 03 80 04 c4 02 00 00 01 01 09 00 5 40 00 00 00 CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 DEF 84 16 02 57 08 06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3a a7 00 00 CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 DEF 87 0a 00 Ob
45. ability of Cheetah disk drives by ensuring that the drive receives adeguate cooling Section 6 0 provides temperature measurements and other information that may be used to enhance the ser vice life of the drive Section 8 2 provides recommended air flow information 5 2 1 Annualized Failrue Rate AFR and Mean time between failure MTBF These drives shall achieve an AFR of 0 55 MTBF of 1 600 000 hours when operated in an environment that ensures the HDA case temperatures do not exceed the values specified in Section 6 4 Operation at case temperatures outside the specifications in Section 6 4 may increase the AFR decrease the MTBF AFR and MTBF statistics are population statistics that are not relevant to individual units AFR and MTBF specifications are based on the following assumptions for Enterprise Storage System environ ments 8 760 power on hours per year 250 average on off cycles per year Operations at nominal voltages Systems will provide adequate cooling to ensure the case temperatures specified in Section 6 4 1 are not exceeded 5 2 2 Preventive maintenance No routine scheduled preventive maintenance is required 5 2 3 Hot plugging the drive When a disk is powered on by switching the power or hot plugged the drive runs a self test before attempting to communicate on its interfaces When the self test completes successfully the drive initiates a Link Reset starting with OOB An attached device should r
46. ad retry count set to 4 and the recovery time limit field Mode Sense page 01 bytes 10 and 11 set to FF FF hex maximum A four LBA Read command is allowed to take up to 253 11 msec recovery time for each of the four LBAs in the command If the recovery time limit is set to 00 C8 hex 200 msec decimal a four LBA read command is allowed to take up to 200 msec for all error recovery within that command The use of the Recovery Time Limit field allows finer granularity on control of the time spent in error recovery The recovery time limit only starts counting when the drive is executing error recovery and it restarts on each command There fore each command s total recovery time is subject to the recovery time limit Note A recovery time limit of 0 will use the drive s default value of FF FF Minimum recovery time limit is achieved by setting the Recovery Time Limit field to 00 01 44 Cheetah 15K 6 SAS Product Manual Rev B 7 3 SAS system errors Information on the reporting of operational errors or faults across the interface is given in the SAS Interface Manual The SSP Response returns information to the host about numerous kinds of errors or faults The Receive Diagnostic Results reports the results of diagnostic operations performed by the drive Status returned by the drive to the initiator is described in the SAS Interface Manual Status reporting plays a role in systems error management and its use in that respect is described in sections
47. all centers Have your system configuration information and your ST model number available SeaTDD 1 405 324 3655 is a telecommunications device for the deaf TDD You can send questions or comments 24 hours daily and exchange messages with a technical support specialist during normal business hours for the call center in your region Cheetah 15K 6 SAS Product Manual Rev B 79 Customer Service Operations Warranty Service Seagate offers worldwide customer support for Seagate products Seagate distributors OEMs and other direct customers should contact their Seagate Customer Service Operations CSO representative for warranty related issues Resellers or end users of drive products should contact their place of purchase or Seagate warranty service for assistance Have your serial number and model or part number available Data Recovery Services Seagate offers data recovery services for all formats and all brands of storage media Our data recovery services labs are currently located throughout the world Additional information including an online reguest form and data loss prevention resources is available at http services seagate com index aspx Authorized Service Centers Seagate Service Centers are available on a global basis for the return of defective products Contact your customer support representative for the location nearest you USA Canada Latin America support services For an extensive list of telephone num
48. aracteristics This methodology specifies the trans mitter signal at the test points on the reguired test loads The transmitter uses the same settings e g pre emphasis voltage swing with both the zero length test load and the TCTF test load The signal specifications at IR are met under each of these loading conditions The TCTF is the mathematical statement of the transfer function through which the transmitter shall be capable of producing acceptable signals as defined by a receive mask The transmission magnitude response of the TCTF in dB is given by the following equation for 1 5 Gbps S21 20 xlog o e x 6 5 x 10 x f 2 0 x 10 for 50 MHz f lt 1 5 GHz and S21 5 437dB for 1 5 GHz lt f lt 5 0 GHz where 10 20 xf 3 3 x10 7 x f dB a fis the signal frequency in hertz The transmission magnitude response of the TCTF in dB is given by the following equation for 3 0 Gbps S21 20 x log p e x 6 5 x 10 x 7 2 0x10 x f 3 3x 10 7 xP dB for 50 MHz f 3 0 GHz and 51 10 884dB for 3 0 GHz lt f lt 5 0 GHz where f is the signal frequency in hertz The TCTF is used to specify the requirements on transmitters that may or may not incorporate pre emphasis or other forms of compensation A compliance interconnect is any physical interconnect with loss egual to or greater than that of the TCTF at the above freguencies that also meets the ISI loss requirements shown
49. ata transfers 15k RPM spindle Average latency 2 0 msec Background processing of queue Supports start and stop commands spindle stops spinning Adaptive seek velocity improved seek performance Note There is no significant performance difference between FDE and non FDE models 8 Cheetah 15K 6 SAS Product Manual Rev B 3 4 Reliability 1 600 000 hour MTBF Annualized Failure Rate AFR of 0 55 Incorporates industry standard Self Monitoring Analysis and Reporting Technology S M A R T 5 year warranty 3 5 Formatted capacities Standard OEM models are formatted to 512 bytes per block The block size is selectable at format time and must be one of the supported sizes listed in the table below Seagate designs specify capacity points at certain block sizes that Seagate guarantees current and future products will meet We recommend customers use this capacity in their project planning as it ensures a stable operating point with backward and forward compatibility from generation to generation The current guaranteed operating points for this product are Capacity Blocks ST3450856SS ST3300656SS ST3146356SS ST3450056SS FDE ST3300056SS FDE ST3146756SS FDE Sector Size Decimal Hex Decimal Hex Decimal Hex 512 879 097 968 3465F870 585 937 500 22ECB25C 286 749 488 860 480 771 33496503 573 653 848 22314358 280 790 185 836 812 167 31E0BD87 557 874 778 21407E5A 272 662 935 3 6 Progra
50. atency read 62 zone bit recording ZBR 8 84 Cheetah 15K 6 SAS Product Manual Rev B Seagate Seagate Technology LLC 920 Disc Drive Scotts Valley California 95066 4544 USA Publication Number 100466193 Rev B Printed in USA
51. ative humidity 37 6 4 3 Effective altitude sealevel 37 6 4 4 Shock and vibration 37 6 4 5 ACOUSUCS ur 2 A ee o A wv 39 6 4 6 Air cleanliness Wina 39 6 4 7 Corrosive environment 39 6 4 8 Electromagnetic susceptibility 40 6 5 Mechanical specifications 40 Defect and error management coco coco 43 7 1 Drive internal defects errors 43 7 2 Drive error recovery procedures 43 7 3 SAS SYSTEM Error Nr one an ba POM hd OT bag deem eee 64 45 7 4 Background Media Scan 45 75 Media Pre CM eng na e rin as pt 45 7 6 Deferred Auto Reallocation 46 7 7 Idle Read After Write 22 55 22 c i 2 4 2 04 pa ek fice gc pas PER AAA 46 Installation 2 2 2 2 eRll BE c Eee ia 47 8 1 Drive ortentatlon uuo eurem a Ea eo 47 8 2 COCINE ta Rn ot a MN bbb d ce beu ANN iecit t 47 8 3 Drive MOUNTING necu al eh ea Bh E pb A 49 8 4 GIOUNdING er nt desee opt ay len LN Wa Aa ad 49 Interface reguirements nn 51 91 SAS features unseren pe PA Io aaa 51
52. bers to technical support presales and warranty service in USA Canada Latin America including business hours go to the Contact Us page on www seagate com Global Customer Support Data Recovery Services Call Center Toll free Direct dial FAX USA Ganada 1 800 475 01435 1 905 474 2162 1 800 475 0158 and Mexico 1 905 474 2459 Europe the Middle East and Africa Support Services For an extensive list of telephone numbers to technical support presales and warranty service in Europe the Middle East and Africa go to the Contact Us page on www seagate com Asia Pacific Support Services For an extensive list of telephone numbers to technical support presales and warranty service in Asia Pacific go to the Contact Us page on www seagate com 80 Cheetah 15K 6 SAS Product Manual Rev B Index Numerics 12 volt pins 67 5 volt pins 67 A abort task set function 51 AC coupling 67 AC power reguirements 23 ACA active status 62 ACA active faulted initiator status 62 acoustics 39 active LED Out signal 67 actuator assembly design 7 adaptive caching 62 AFR 9 air cleanliness 39 air flow 47 48 illustrated 48 air inlet 47 altitude 37 ambient 36 ambient temperature 47 ANSI documents SCSI 5 Serial Attached SCSI 5 asynchronous event notification 62 audible noise 3 auto write and read reallocation programmable 8 automatic contingent allegiance 62 average idle current 23 24 25 26 average rotational latency 11
53. ce ohm 100 10 100 10 Differential impedance imbalance 49 ohm 5 5 Common mode impedance 32 5 t 7 5 32 5 t 7 5 Mated connectors d Differential impedance b c d g Differential impedance imbalance Common mode impedance Receiver termination Differential impedance 100 15 100 15 Differential impedance imbalance 9 ohm 5 5 Receiver termination time constant 4 ps 150 max 100 max Cheetah 15K 6 SAS Product Manual Rev B 73 Table 33 Impedance requirements Sheet 2 of 2 Requirement Units 1 5 Gbps 3 0 Gbps Common mode impedance ohm 20 min 40 max 20 min 40 max Transmitter source termination Differential impedance 60 min 115 max 60 min 115 max Differential impedance imbalance 9 5 5 Common mode impedance a oo o b 15 min 40 max 115 min 40 max All times indicated for time domain reflectometer measurements are recorded times Recorded times are twice the transit time of the time domain reflectometer signal All measurements are made through mated connector pairs The media impedance measurement identifies the impedance mismatches present in the media when terminated in its characteristic impedance This measurement excludes mated connectors at both ends of the media when present but includes any intermediate connectors or splices The mated connectors measurement applies only to the mated connector pair at each end as applicable
54. d These testing options are described in the following two subsections Each test consists of three segments an electrical test segment a servo test segment and a read verify scan segment Short test Function Code 001b The purpose of the short test is to provide a time limited test that tests as much of the drive as possible within 120 seconds The short test does not scan the entire media surface but does some fundamental tests and scans portions of the media A complete read verify scan is not performed and only factual failures will report a fault condition This option provides a quick confidence test of the drive Extended test Function Code 010b The objective of the extended test option is to empirically test critical drive components For example the seek tests and on track operations test the positioning mechanism The read operation tests the read head element and the media surface The write element is tested through read write read operations The integrity of the media is checked through a read verify scan of the media Motor functionality is tested by default as a part of these tests The anticipated length of the Extended test is reported through the Control Mode page 5 2 6 2 4 Log page entries When the drive begins DST it creates a new entry in the Self test Results Log page The new entry is created by inserting a new self test parameter block at the beginning of the self test results log parameter section of th
55. de field This will cause a 01 self test aborted by the application client code to appear in the self test results values log All other abort mechanisms will be reported as a 02 self test routine was interrupted by a reset condition 5 2 7 Product warranty Beginning on the date of shipment to the customer and continuing for the period specified in your purchase contract Seagate warrants that each product including components and subassemblies that fails to function properly under normal use due to defect in materials or workmanship or due to nonconformance to the applica ble specifications will be repaired or replaced at Seagate s option and at no charge to the customer if returned by customer at customer s expense to Seagate s designated facility in accordance with Seagate s warranty procedure Seagate will pay for transporting the repair or replacement item to the customer For more detailed warranty information refer to the standard terms and conditions of purchase for Seagate products on your pur chase documentation The remaining warranty for a particular drive can be determined by calling Seagate Customer Service at 1 800 468 3472 You can also determine remaining warranty using the Seagate web site www seagate com The drive serial number is required to determine remaining warranty information Shipping When transporting or shipping a drive use only a Seagate approved container Keep your original box Seagate approved
56. design their system to ensure that equipment operating in the same system as the drive or external to the system does not adversely affect the performance of the drive See Tables 12 14 and 16 for DC power requirements Cheetah 15K 6 SAS Product Manual Rev B 3 2 2 Compliance 2 2 1 Electromagnetic compliance Seagate uses an independent laboratory to confirm compliance with the directives standards for CE Marking and C Tick Marking The drive was tested in a representative system for typical applications The selected sys tem represents the most popular characteristics for test platforms The system configurations include Typical current use microprocessor Keyboard Monitor display Printer Mouse Although the test system with this Seagate model complies with the directives standards we cannot guarantee that all systems will comply The computer manufacturer or system integrator shall confirm EMC compliance and provide the appropriate marking for their product Electromagnetic compliance for the European Union If this model has the CE Marking it complies with the European Union requirements of the Electromagnetic Compatibility Directive 89 336 EEC of 03 May 1989 as amended by Directive 92 31 EEC of 28 April 1992 and Directive 93 68 EEC of 22 July 1993 Australian C Tick If this model has the C Tick Marking it complies with the Australia New Zealand Standard AS NZS3548 1995 and meets the Electromagnetic Compatibility E
57. disables prefetch when it decides that a prefetch hit is not likely to occur 14 Cheetah 15K 6 SAS Product Manual Rev B 5 0 Reliability specifications The following reliability specifications assume correct host and drive operational interface including all inter face timings power supply voltages environmental reguirements and drive mounting constraints Seek error rate Less than 10 errors in 108 seeks Read Error Rates Recovered Data Less than 10 errors in 1012 bits transferred OEM default settings Unrecovered Data Less than 1 sector in 10 bits transferred Miscorrected Data Less than 1 sector in 10 bits transferred Interface error rate Less than 1 error in 10 bits transferred MTBF 1 600 000 hours AFR 0 55 Preventive maintenance None required 5 1 Error rates The error rates stated in this manual assume the following The drive is operated per this specification using DC power as defined in this manual see Section 6 2 Errors caused by host system failures are excluded from error rate computations Assume random data Default OEM error recovery settings are applied This includes AWRE ARRE full read retries full write retries and full retry time Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated 5 1 1 Recoverable Errors Recoverable errors are those detected and corrected by the drive and do not require user intervention Recoverable
58. e 15h Start stop Cycle Counter page 0Eh Temperature page ODh Verify Error Counter page 05h Write error counter page 02h Mode Select same pages as Mode Sense 1Ah 15h 2 Mode Select 10 same pages as Mode Sense 1Ah 55h Mode Sense 1Ah 2 Caching Parameters page 08h Control Mode page 0Ah Disconnect Reconnect 02h Error Recovery page 01h Format page 03h Information Exceptions Control page 1Ch Background Scan mode subpage 01h Notch and Partition Page 0Ch Protocol Specific Port page 19h Power Condition page 1 Ah Rigid disk Drive Geometry page 04h Unit Attention page 00h Verify Error Recovery page 07h 4 lt lt P3 lt lt z P3 lt P3 lt lt P3 lt lt lt lt lt PI lt lt lt P3 lt lt lt Xor Control page 10h Mode Sense 10 same pages as Mode Sense 1Ah 5Ah Y Prefetch 34h N Read 08h Y Read Buffer modes 0 2 3 Ah and Bh supported 3Ch Y Read Capacity 25h Y Read Defect Data 10 37h Y Read Defect Data 12 B7h Y Read Extended 28h Y DPO bit supported Y FUA bit supported Y Read Long 3Eh Y 54 Cheetah 15K 6 SAS Product Manual Rev B Table 21 Commands supported by Cheetah 15K 6 SAS family drives continued Command name Command code Supported Reassign Blocks 07h Y
59. e log page Existing data will be moved to make room for the new parameter block The drive reports 20 param eter blocks in the log page If there are more than 20 parameter blocks the least recent parameter block will be deleted The new parameter block will be initialized as follows 1 The Function Code field is set to the same value as sent in the DST command 2 The Self Test Results Value field is set to Fh 3 The drive will store the log page to non volatile memory After a self test is complete or has been aborted the drive updates the Self Test Results Value field in its Self Test Results Log page in non volatile memory The host may use Log Sense to read the results from up to the last 20 self tests performed by the drive The self test results value is a 4 bit field that reports the results of the test If the field is set to zero the drive passed with no errors detected by the DST If the field is not set to zero the test failed for the reason reported in the field 20 Cheetah 15K 6 SAS Product Manual Rev B The drive will report the failure condition and LBA if applicable in the Self test Results Log parameter The Sense key ASC ASCQ and FRU are used to report the failure condition 5 2 6 2 5 Abort There are several ways to abort a diagnostic You can use a SCSI Bus Reset or a Bus Device Reset message to abort the diagnostic You can abort a DST executing in background mode by using the abort code in the DST Function Co
60. e 31 X1op is half the value for total jitter intable 31 and X17 9 is half the value for total jitter in table 32 for jitter frequencies above bit rate 1 667 Absolute in V additional sinusoidal jitter 2 Outline of eye mask before adding sinusoidal jitter Outline of eye mask after adding sinusoidal jitter 0 Me ii 1 XS Xio 1XtroL Normalized time in U Figure 19 Receive tolerance eye mask Cheetah 15K 6 SAS Product Manual Rev B 69 The leading and trailing edge slopes of figure 18 shall be preserved As a result the amplitude value of Z1 is less than that given in table 30 and Zito and Zl gp shall be defined from those slopes by the following equa tion X2 gp 0 5 xadditional sinusoidal jitter X1 op Zi TOL 7 Zi op X2 op X1 Gp where Ziro is the value for Z1 to be used for the tolerance masks and Z1op X1op and X2op are the values in table 30 for Z1 X1 and X2 The X1 points in the receive tolerance masks are greater than the X1 points in the receive masks due to the addition of sinusoidal jitter Figure 20 defines the sinusoidal jitter mask Peak to peak TUNE sinusoidal Sinusoidal jitter frequency jitter log log plot in UI Fnom 1 5 x 10 for 1 5 Gbps ig enne From 3 0 x 10 for 3 0 Gbps 1 0 0 1 0 Fnom 25 000 Fnom 1 667 Freguency in kHz Figure 20 Sinusoidal jitter mask 70 Cheetah 15K 6 SAS Product Manual Rev B 9 5 2 2 Transmitter signal
61. e SAS response codes returned for task management functions supported Table20 Task management response codes Function name Response code Function complete 00 Invalid frame 02 Function not supported 04 Function failed 05 Function succeeded 08 Invalid logical unit 09 Cheetah 15K 6 SAS Product Manual Rev B 51 9 2 Dual port support Cheetah 15K 6 SAS drives have two independent ports These ports may be connected in the same or differ ent SCSI domains Each drive port has a unigue SAS address The two ports run at the same link rate The first port to successfully complete speed negotiation sets the link rate support by both ports When the second port participates in speed negotiation it indicates the only sup ported speed is the speed selected by the first port If the first port to complete speed negotiation looses sync before the second port completes speed negotiation both ports revert back to the power on condition of allow ing either link rate 1 5 or 3 0 Gbits sec Subject to buffer availability the Cheetah 15K 6 drives support Concurrent port transfers The drive supports receiving COMMAND TASK management transfers on both ports at the same time Full duplex The drive supports sending XFER RDY DATA and RESPONSE transfers while receiving frames on both ports 52 Cheetah 15K 6 SAS Product Manual Rev B 9 3 SCSI commands supported Table 21 lists the SCSI commands supported by Cheetah 15K 6 drives
62. e limits of non operating shock shall apply to all conditions of handling and transportation This includes both isolated drives and integrated drives The drive subjected to nonrepetitive shock not exceeding the three values below shall not exhibit device damage or performance degradation 80 Gs at a duration of 11 msec half sinewave 300 Gs at a duration of 2 msec half sinewave 150 Gs at a duration of 0 5 msec half sinewave Shock may be applied in the X Y or Z axis Cheetah 15K 6 SAS Product Manual Rev B 37 d Packaged disk drives shipped as loose load not palletized general freight will be packaged to withstand drops from heights as defined in the table below For additional details refer to Seagate specifications 30190 001 under 100 Ibs 45 kg or 30191 001 over 100 Ibs 45 Kg Package size Packaged product weight Drop height lt 600 cu in lt 9 800 cu cm Any 60 in 1524 mm 600 1800 cu in 9 800 19 700 cu cm 0 20 Ib 0 to 9 1 kg 48 in 1219 mm gt 1800 cu in gt 19 700 cu cm 0 20 Ib Oto 9 1 kg 42 in 1067 mm gt 600 cu in gt 9 800 cu cm 20 40 Ib 9 1 to 18 1 kg 36 in 914 mm Drives packaged in single or multipacks with a gross weight of 20 pounds 8 95 kg or less by Seagate for general freight shipment shall withstand a drop test from 48 inches 1 070 mm against a concrete floor or eguivalent Figure 11 Recommended mounting 38 Cheetah 15K 6 SAS Product Manual R
63. en the initiator and the drive In addition Seagate provides the following technologies used to increase data integrity and drive reliability Background Media Scan see Section 7 4 Media Pre Scan see Section 7 5 Deferred Auto Reallocation see Section 7 6 Idle Read After Write see Section 7 7 The read error rates and specified storage capacities are not dependent on host initiator defect management routines 7 1 Drive internal defects errors During the initial drive format operation at the factory media defects are identified tagged as being unusable and their locations recorded on the drive primary defects list referred to as the P list and also as the ETF defect list At factory format time these known defecis are also reallocated that is reassigned to a new place on the medium and the location listed in the defects reallocation table The P list is not altered after factory formatting Locations of defects found and reallocated during error recovery procedures after drive shipment are listed in the G list defects growth list The P and G lists may be referenced by the initiator using the Read Defect Data command Details of the SCSI commands supported by the drive are described in the SAS Interface Manual Also more information on the drive Error Recovery philosophy is presented in the SAS Interface Manual 7 2 Drive error recovery procedures When an error occurs during drive operatio
64. espond to the link reset If the link reset attempt fails or any time the drive looses sync the drive initiated link reset The drive will initiate link reset once per second but alternates between port A and B Therefore each port will attempt a link reset once per 2 seconds assuming both ports are out of sync If the self test fails the does not respond to link reset on the failing port Note It is the responsibility of the systems integrator to assure that no temperature energy voltage haz ard or ESD potential hazard is presented during the hot connect disconnect operation Discharge the static electricity from the drive carrier prior to inserting it into the system Caution The drive motor must come to a complete stop prior to changing the plane of operation This time is required to insure data integrity 16 Cheetah 15K 6 SAS Product Manual Rev B 5 2 4 S M A R T S M A R T is an acronym for Self Monitoring Analysis and Reporting Technology This technology is intended to recognize conditions that indicate imminent drive failure and is designed to provide sufficient warning of a failure to allow you to back up the data before an actual failure occurs Note The drive s firmware monitors specific attributes for degradation over time but can t predict instanta neous drive failures Each monitored attribute has been selected to monitor a specific set of failure conditions in the operating per formance of the drive and the thre
65. ev B 6 4 4 2 Vibration a Operating normal The drive as installed for normal operation shall comply with the complete specified performance while subjected to continuous vibration not exceeding 10 500 Hz 0 5 G zero to peak Vibration may be applied in the X Y or Z axis Operating normal translational random flat profile 10 500 Hz 0 4 JRMS b Operating abnormal Eguipment as installed for normal operation shall not incur physical damage while subjected to periodic vibration not exceeding 15 minutes of duration at major resonant freguency 10 500 Hz 0 75 G X Y or Z axis Vibration occurring at these levels may degrade operational performance during the abnormal vibration period Specified operational performance will continue when normal operating vibration levels are resumed This assumes system recovery routines are available Operating abnormal translational random flat profile 10 500 Hz 1 2 gRMS c Non operating The limits of non operating vibration shall apply to all conditions of handling and transportation This includes both isolated drives and integrated drives The drive shall not incur physical damage or degraded performance as a result of continuous vibration not exceeding 5 500 Hz 3G Amplitudes above 1 0 G in the frequency range of 5 22 Hz may be limited due to shaker eguipment stroke limitations Vibration may be applied in the X Y or Z axis Non operating translational random flat profile 1
66. ff 00 00 00 00 00 ff ff CHG 87 0a Of ff 00 00 00 00 00 00 ff ff DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00 DEF 8a 0a 02 00 00 00 00 00 00 00 09 9c CHG 8a 0a 03 0 00 00 00 00 00 00 00 00 DEF 18 06 06 00 00 00 00 00 CHG 18 06 00 00 00 00 00 00 DEF 99 06 06 00 07 dd 00 00 CHG 99 06 10 00 ff ff ff ff h DEF 9a 0a 00 02 00 00 00 0 CHG 9a 0a 00 03 ff ff ff f 00 00 00 04 00 00 00 00 Fh u DEF 9c 0a 10 00 00 00 00 00 00 00 00 01 CHG 9c 0a 9d Of ff ff ff ff ff ff ff ff DEF 80 06 00 80 Of 00 00 00 CHG 80 06 b7 cO Of 00 00 00 READ CAPACITY DATA READ BUFFER O Tm 2 3 4 5 6 7 8 9 A B C D E F ASCII 000000 22 EC B2 5B 00 00 02 00 osos feo 60 Cheetah 15K 6 SAS Product Manual Rev B 9 3 2 3 MODE DATA HEADER ST3146356SS ST3146756SS Mode Sense data 01 2e 00 10 00 co ff 00 00 bb 00 02 00 00 of 14 a5 02 03 06 00 06 10 00 00 10 9d 00 b7 MODE PAGES DEF 81 0a CHG 81 0a DEF 82 0e CHG 82 0e DEF 83 16 CHG 83 16 DEF 84 16 CHG 84 16 DEF 87 0a CHG 87 0a DEF 88 12 CHG 88 12 DEF 8a 0a CHG 8a 0a DEF 18 06 CHG 18 06 DEF 99 06 CHG 99 06 DEF 9a 0a CHG 9a 0a DEF 9c 0a CHG 9c 0a DEF 80 06 CHG 80 06 READ CAPACITY READ BUFFER 000000 Cheetah 15K 6 SAS Product Manual Rev B 0 11 1 17 Ob ff 00 00 do 00 5 00 Ob ff 00 00 0
67. ge 08h Prefetch and cache operations are independent features from the standpoint that each is enabled and disabled independently using the Mode Select command however in actual opera tion the prefetch feature overlaps cache operation somewhat as described in sections 4 5 1 and 4 5 2 All default cache and prefetch mode parameter values Mode Page 08h for standard OEM versions of this drive family are given in Section 9 3 2 1 4 5 Cache operation Note Refertothe SAS Interface Manual for more detail concerning the cache bits Of the 16 Mbytes physical buffer space in the drive approximately 13 000 kbytes can be used as a cache The buffer is divided into logical segments from which data is read and to which data is written The drive keeps track of the logical block addresses of the data stored in each segment of the buffer If the cache is enabled see RCD bit in the SAS Interface Manual data requested by the host with a read command is retrieved from the buffer if possible before any disk access is initiated If cache operation is not enabled the buffer is still used but only as circular buffer segments during disk medium read operations disregarding Prefetch operation for the moment That is the drive does not check in the buffer segments for the requested read data but goes directly to the medium to retrieve it The retrieved data merely passes through some buffer segment on the way to the host All data transfers to the host are in
68. gh the SAS connector The drive is shipped from the factory low level formatted in 512 byte logical blocks You need to reformat the drive only if you want to select a different logical block size 8 1 Drive orientation The drive may be mounted in any orientation All drive performance characterizations however have been done with the drive in horizontal disks level and vertical drive on its side orientations which are the two pre ferred mounting orientations 8 2 Cooling Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the drive will not exceed temperature conditions specified in Section 6 4 1 Temperature The rack cabinet or drawer environment for the drive must provide heat removal from the electronics and head and disk assembly HDA You should confirm that adequate heat removal is provided using the temper ature measurement guidelines described in Section 6 4 1 Forced air flow may be required to keep temperatures at or below the temperatures specified in Section 6 4 1 in which case the drive should be oriented or air flow directed so that the least amount of air flow resistance is created while providing air flow to the electronics and HDA Also the shortest possible path between the air inlet and exit should be chosen to minimize the travel length of air heated by the drive and other heat sources within the rack cabinet or drawer environment Cheetah 15K 6 SAS
69. icates the feature or condition is not supported Table 23 Miscellaneous features Supported Feature or condition N Automatic contingent allegiance Asynchronous event notification Synchronized locked spindle operation Segmented caching Zero latency read Queue tagging up to 64 queue tags supported Deferred error handling Parameter rounding controlled by Round bit in Mode Select page 0 Reporting actual retry count in Extended Sense bytes 15 16 and 17 Adaptive caching lt z lt lt lt lt z lt z z SMP 1 in Mode Select command needed to save RPL and rotational offset bytes Table 24 Miscellaneous status Supported Status Y Good Check condition Condition met good Busy Intermediate good Intermediate condition met good Reservation conflict Task set full ACA active z z lt lt lt lt lt lt lt ACA active faulted initiator 9 4 1 SAS physical interface Figure 14 shows the location of the SAS device connector J1 Figures 15 and 16 provide the dimensions of the SAS device 62 Cheetah 15K 6 SAS Product Manual Rev B Details of the physical electrical and logical characteristics are provided within this section The operational aspects of Seagate s SAS drives are provided in the SAS Interface Manual o Dn N SAS Interface gt connector Figure 14 Physical interface Cheetah 15K 6 SAS Prod
70. ing hot plugging 9 5 Signal characteristics This section describes the electrical signal characteristics of the drive s input and output signals See Table 25 for signal type and signal name information 9 5 1 Ready LED Out The Ready LED Out signal is driven by the drive as indicated in Table 26 Table 26 Ready LED Out conditions Normal command activity LED status Ready LED Meaning bit mode page 19h 0 1 Spun down and no activity Off Off Spun down and activity command executing On On Spun up and no activity On Off Spun up and activity command executing Off On Spinning up or down Blinks steadily 50 on and 50 off 0 5 seconds on and off for 0 5 seconds Format in progress Toggles on off Write Same command in progress Toggles on off Cheetah 15K 6 SAS Product Manual Rev B 67 The Ready LED Out signal is designed to pull down the cathode of an LED The anode is attached to the proper 3 3 volt supply through an appropriate current limiting resistor The LED and the current limiting resis tor are external to the drive See Table 27 for the output characteristics of the LED drive signals Table 27 LED drive signal State Test condition Output voltage LED off high 0 V lt VOH lt 3 6 V 100 LA lt loy lt 100 uA LED on low lo gt 15 mA OS Vo lt 0 225 V 9 5 2 Differential signals The drive SAS differential signals comply with the intra enclosure internal connector requirements of the S
71. ives tested 6 35 Degrees C ambient For 12 V a 10 tolerance is allowed during initial spindle start but must return to 5 before reaching 15 000 RPM The 5 must be maintained after the drive signifies that its power up seguence has been completed and that the drive is able to accept selection by the host initiator See 12V current profile in Figure 1 This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup primitive See paragraph 6 2 1 Conducted noise immunity Specified voltage tolerance includes ripple noise and transient response Operating condition is defined as random 8 block reads at 330 I Os per second for 450GB models and 347 I Os per second for 300GB and 1465GB models Current and power specified at nominal voltages During idle the drive heads are relocated every 60 seconds to a random location within the band from three quarters to maximum track General DC power reguirement notes 1 26 Minimum current loading for each supply voltage is not less than 1 7 of the maximum operating current shown The 5V and 12V supplies should employ separate ground returns Where power is provided to multiple drives from a common supply careful consideration for individual drive power requirements should be noted Where multiple units are powered on simultaneously the peak starting current must be available to each device Parameters other than spindle star
72. mbient temperature range with a maximum temperature gradient of 36 F 20 C per hour Air flow may be needed in the drive enclosure to keep within this range see Section 8 3 Operation at HDA case temperatures outside this range may adversely affect the drives ability to meet specifications To confirm that the required cooling for the electronics and HDA case is provided place the drive in its final mechanical configuration perform random write read operations and measure the HDA case temperature after it has stabilized Non operating 40 to 158 F 40 to 70 C package ambient with a maximum gradient of 36 F 20 C per hour This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with drive Figure 10 Location of the HDA temperature check point 36 Cheetah 15K 6 SAS Product Manual Rev B 6 4 2 Relative humidity The values below assume that no condensation on the drive occurs a Operating 5 to 95 non condensing relative humidity with a maximum gradient of 20 per hour Non operating 5 to 95 non condensing relative humidity 6 4 3 Effective altitude sea level a Operating 1 000 to 10 000 feet 305 to 3 048 meters Non operating 1 000 to 40 000 feet 305 to 12 210 meters 6 4 4 Shock and vibration Shock and vibration limits specified in this document are measured directly on the drive chassis If the drive is installed i
73. mmable drive capacity 11177330 10BC84A9 528 10408197 Using the Mode Select command the drive can change its capacity to something less than maximum See the Mode Select 6 parameter list table in the SAS Interface Manual part number 100293071 A value of zero in the Number of Blocks field indicates that the drive will not change the capacity it is currently formatted to have A number other than zero and less than the maximum number of LBAs in the Number of Blocks field changes the total drive capacity to the value in the Number of Blocks field A value greater than the maximum number of LBAs is rounded down to the maximum capacity 3 7 Factory installed options You may order the following items which are incorporated at tne manufacturing facility during production or packaged before shipping Some of the options available are not an exhaustive list of possible options Other capacities can be ordered depending on sparing scheme and sector size requested Single unit shipping pack The drive is normally shipped in bulk packaging to provide maximum protection against transit damage Units shipped individually require additional protection as provided by the single unit shipping pack Users planning single unit distribution should specify this option The Safety and Regulatory Agency Specifications part number 75789512 may be included with each stan dard OEM drive shipped Cheetah 15K 6 SAS Product Manual Rev B 9
74. mum on line only processing delay is summarized below Maximum processing delay On line only delay Fully enabled delay DEXCPT 0 PERF 1 DEXCPT 0 PERF 0 S M A R T delay times 42 milliseconds 163 milliseconds Cheetah 15K 6 SAS Product Manual Rev B 17 Reporting control Reporting is controlled by the MRIE bits in the Informational Exceptions Control mode page 1Ch Subject to the reporting method the firmware will issue to the host an 01 5Dxx sense code The error code is preserved through bus resets and power cycles Determining rate S M A R T monitors the rate at which errors occur and signals a predictive failure if the rate of degraded errors increases to an unacceptable level To determine rate error events are logged and compared to the number of total operations for a given attribute The interval defines the number of operations over which to measure the rate The counter that keeps track of the current number of operations is referred to as the Interval Counter S M A R T measures error rates All errors for each monitored attribute are recorded A counter keeps track of the number of errors for the current interval This counter is referred to as the Failure Counter Error rate is the number of errors per operation The algorithm that S M A R T uses to record rates of error is to set thresholds for the number of errors and their interval If the number of errors exceeds the threshold before the interval expires the
75. n the drive if programmed to do so performs error recovery proce dures to attempt to recover the data The error recovery procedures used depend on the options previously set in the Error Recovery Parameters mode page Error recovery and defect management may involve using sev eral SCSI commands described in the SAS Interface Manual The drive implements selectable error recovery time limits required in video applications The error recovery scheme supported by the drive provides a way to control the total error recovery time for the entire command in addition to controlling the recovery level for a single LBA The total amount of time spent in error recovery for a command can be limited using the Recovery Time Limit bytes in the Error Recovery mode page The total amount of time spent in error recovery for a single LBA can be limited using the Read Retry Count or Write Retry Count bytes in the Error Recovery mode page Cheetah 15K 6 SAS Product Manual Rev B 43 The drive firmware error recovery algorithms consists of 13 levels for read recoveries and five levels for write Each level may consist of multiple steps where a step is defined as a recovery function involving a single re read or re write attempt The maximum level used by the drive in LBA recovery is determined by the read and write retry counts Table 18 equates the read and write retry count with the maximum possible recovery time for read and write recovery of individual LBAs The
76. n an enclosure to which the stated shock and or vibration criteria is applied resonances may occur internally to the enclosure resulting in drive movement in excess of the stated limits If this situation is apparent it may be necessary to modify the enclosure to minimize drive movement The limits of shock and vibration defined within this document are specified with the drive mounted by any of the four methods shown in Figure 11 and in accordance with the restrictions of Section 8 3 6 4 4 1 Shock a Operating normal The drive as installed for normal operation shall operate error free while subjected to intermittent shock not exceeding 15 Gs at a duration of 11 msec half sinewave 25 Gs at a duration of 2 msec half sinewave 60 Gs at a duration of 2 msec half sinewave when performing reads only Shock may be applied in the X Y or Z axis Shock is not to be repeated more than once every 2 seconds Operating abnormal Equipment as installed for normal operation does not incur physical damage while subjected to intermit tent shock not exceeding 40 Gs at a duration of 11 msec half sinewave Shock occurring at abnormal lev els may promote degraded operational performance during the abnormal shock period Specified operational performance will continue when normal operating shock levels resume Shock may be applied in the X Y or Z axis Shock is not to be repeated more than once every 2 seconds Non operating Th
77. nce between the V and V A C RMS transmitter amplitudes measured on a CJTPAT test pattern see 9 5 2 3 3 into the test load shown in figure 22 as a percentage of the average of the V and V A C RMS amplitudes f The maximum difference in the average differential voltage D C offset component between the burst times and the idle times of an OOB signal g The maximum difference in the average of the common mode voltage between the burst times and the idle times of an OOB signal Cheetah 15K 6 SAS Product Manual Rev B 71 9 5 2 3 Receiver signal characteristics Table 30 defines the compliance point requirements of the signal at the receiver end of a TxRx connection as measured into the test loads specified in figure 21 and figure 22 Table 30 Receiver signal characteristics Signal characteristic 1 5 Gbps 3 0 Gbps Jitter see figure 18 P See table 31 See table 31 2x Z2 1 200 1 600 2 x ZI 325 275 XI 0 275 0 275 X2 0 50 0 50 Skew 80 75 Max voltage non op 2 000 2 000 Minimum OOB ALIGN burst amplitude 240 240 Maximum noise during OOB idle time 120 120 Max near end crosstalk 100 100 a The value for X1 shall be half the value given for total jitter in table 31 The test or analysis shall include the effects of a single pole high pass frequency weighting function that progressively attenuates jitter at 20 dB decade below a frequency of bit rate 1 667 b The value for X1 applies at
78. nd is supported N No Command is not supported A Support is available on special request 56 Cheetah 15K 6 SAS Product Manual Rev B 9 3 1 Inguiry data Table 22 lists the Inguiry command data that the drive should return to the initiator per the format given in the SAS lnterface Manual Table 22 Inquiry data Vendor ID Product ID 96 111 00 43 6F 70 79 72 69 67 68 74 20 28 63 29 20 32 Copyright 112 127 30 30 37 20 53 65 61 67 61 74 65 20 41 6C 6C 20 notice 128 143 72 69 67 68 74 73 20 72 65 73 65 72 76 65 64 20 Copyright year changes with actual year SCSI Revision support Refer to the appropiate SPC release documentation for definitions PP 10 Inquiry data for an Inquiry command received on Port A 30 Inguiry data for an Inquiry command received on Port B R Four ASCII digits representing the last four digits of the product firmware release number S Eight ASCII digits representing the eight digits of the product serial number Bytes 18 through 26 reflect model of drive The table above shows the hex values for Model ST3450856SS Refer to the values below for the values of bytes 18 through 27 of you particular model ST3450856SS 53 54 33 34 35 30 38 35 36 53 53 ST3450056SS FDE 53 54 33 34 35 30 30 35 36 53 53 ST3300656SS 53 54 33 33 30 30 36 35 36 53 53 ST3300056SS FDE 53 54 33 33 30 30 30 35 36 53 53 ST3146356SS 53 54 33 31 34 36
79. nds from the interface bus while performing reads BMS will complete any BMS initiated error recovery prior to returning to service host initiated commands Overhead associated with a return to host servicing activity from BMS only impacts the first command that interrupted BMS this results in atypical delay of about 1 ms 7 5 Media Pre Scan Media Pre Scan is a feature that allows the drive to repair media errors that would otherwise have been found by the host system during critical data accesses early in the drive s life The default setting for Media Pre Scan is enabled on standard products Media Pre Scan checks each write command to determine if the destination LBAs have been scanned by BMS If the LBAs have been verified the drive proceeds with the normal write command If the LBAs have not been verified by BMS Pre Scan will convert the write to a write verify to certify that the data was properly written to the disk Note During Pre Scan write verify commands write performance may decrease by 50 until Pre Scan completes Write performance testing should be performed after Pre Scan is complete This may be checked by reading the BMS status To expedite the scan of the full pack and subseguently exit from the Pre Scan period BMS will begin scanning immediately when the drive goes to idle during the Pre Scan period In the event that the drive is in a high transaction traffic environment and is unable to complete a BMS scan within 24 power
80. netic compliance 4 2 3 European Union Restriction of Hazardous Substances RoHS 4 2 4 Reference documents oa 5 General description ui Te SEE TES a eevee eis la ET 7 3 1 Standard features 8 3 2 Media description ii 8 3 3 Performance eee eese ba Aa BA rom eed ee Pen NANA WA ca 8 3 4 Reliability tasas a bo pl ir NIKA PR Cu cepi Sp qe DA ada 9 3 5 Formatted capacitieS ii 9 3 6 Programmable drive capacity 9 3 7 Factory installed options 9 Performance characteristics 11 4 1 Internal drive characteristics 11 4 2 Seek time a er A EA Reed Kal BE 11 4 2 1 ACCESS TIME sos nep A ea De u 11 4 2 2 Format command execution time minutes 12 4 2 3 General performance characteristics 12 4 3 Sta vstop time iae sera er HA 12 4 4 Prefetch multi segmented cache control 13 45 Cache operation ni D pisni sani deeem e e e eos eed en E a an ee ens 13 4 5 1 Caching writedata 14 4 5 2 Prefetch operation oo 14 Reliability specifications
81. on met good 62 Intermediate good 62 Reservation conflict 62 Task set full 62 miscorrected media data 15 Mode sense data table 57 mounting 49 holes 49 orientations 47 N noise audible 3 noise immunity 27 Cheetah 15K 6 SAS Product Manual Rev B non operating 37 39 temperature 36 non operating vibration 39 O office environment 39 operating 37 39 option selection 66 out of plane distortion 49 P package size 38 package test specification 5 packaged 38 parameter rounding 62 PCBA 49 peak bits per inch 11 peak operating current 23 24 25 26 peak to peak measurements 27 performance characteristics detailed 11 general 12 performance degradation 37 performance highlights 8 physical damage 39 physical dimensions 40 physical interface 62 physical specifications 23 pin descriptions 66 power 67 dissipation 30 reguirements AC 23 reguirements DC 23 seguencing 27 power distribution 3 prefetch multi segmented cache control 13 preventive maintenance 15 Q queue tagging 62 R radio interference regulations 3 RCDbit 13 read error rates 15 43 read write data heads 11 receivers 67 recommended mounting 38 Recoverable Errors 15 recovered media data 15 reference documents 5 relative humidity 37 Cheetah 15K 6 SAS Product Manual Rev B reliability 9 specifications 15 reliability and service 16 repair and return information 21 reporting actual retry count 62 reservation conflict status 62 resonance 37
82. on the TCG Storage Architecture Core Specification and the TCG Storage Workgroup Security Subsystem Class Enterprise A specification with additional vendor unigue features as noted in this product manual 2 1 1 Electromagnetic compatibility The drive as delivered is designed for system integration and installation into a suitable enclosure prior to use The drive is supplied as a subassembly and is not subject to Subpart B of Part 15 of the FCC Rules and Regulations nor the Radio Interference Regulations of the Canadian Department of Communications The design characteristics of the drive serve to minimize radiation when installed in an enclosure that provides reasonable shielding The drive is capable of meeting the Class B limits of the FCC Rules and Regulations of the Canadian Department of Communications when properly packaged however it is the user s responsibility to assure that the drive meets the appropriate EMI requirements in their system Shielded I O cables may be required if the enclosure does not provide adequate shielding If the I O cables are external to the enclosure shielded cables should be used with the shields grounded to the enclosure and to the host controller 2 1 1 1 Electromagnetic susceptibility As a component assembly the drive is not required to meet any susceptibility performance requirements It is the responsibility of those integrating the drive within their systems to perform those tests required and
83. ored into the saved val ues storage location on the media prior to shipping the drive Some drives may have unique firmware with unique default values also On standard OEM drives the saved values are taken from the default values list and stored into the saved values storage location on the media prior to shipping Current values Current values are volatile values being used by the drive to control its operation A Mode Select command can be used to change the values identified as changeable values Originally current values are installed from saved or default values after apower on reset hard reset or Bus Device Reset message Changeable values Changeable values form a bit mask stored in nonvolatile memory that dictates which of the current values and saved values can be changed by a Mode Select command A one 1 indicates the value can be changed A zero 0 indicates the value is not changeable For example in Table 9 3 2 1 refer to Mode page 81 in the row entitled CHG These are hex numbers representing the changeable values for Mode page 81 Note in columns 5 and 6 bytes 04 and 05 there is 00h which indicates that in bytes 04 and 05 none of the bits are changeable Note also that bytes 06 07 09 10 and 11 are not changeable because those fields are all zeros In byte 02 hex value FF equates to the binary pattern 11111111 Ifthere is a zero in any bit position in the field it means that bit is not changeable Since all
84. perless configuration User selectable logical block size 512 520 or 528 bytes per logical block Programmable logical block reallocation scheme Flawed logical block reallocation at format time Programmable auto write and read reallocation Reallocation of defects on command Post Format ECC maximum burst correction length of 320 bits No preventive maintenance or adjustments reguired Dedicated head landing zone Embedded servo design Automatic shipping lock Self diagnostics performed when power is applied to the drive Zone bit recording Vertical horizontal or top down mounting Dynamic spindle brake 16 Mbyte data buffer Drive Self Test Background Media Scan Power Save Cheetah 15K 6 SAS FDE models have the following additional features Automatic data encryption decryption on all writes and reads to and from the media Cryptographic erase of user data for a drive that will be repurposed or scrapped Two independent data bands which each have i s own ownership credential and encryption key Authenticated firmware download 3 2 Media description The media used on the drive has an aluminum substrate coated with a thin film magnetic material overcoated with a proprietary protective layer for improved durability and environmental protection 3 3 Performance Firmware controlled multisegmented cache designed to dynamically adjust segments for enhanced system performance 300 Mbytes sec maximum instantaneous d
85. power up The thermal monitor system generates a warning code of 01 0B01 when the temperature exceeds the speci fied limit in compliance with the SCSI standard The drive temperature is reported in the FRU code field of mode sense data You can use this information to determine if the warning is due to the temperature exceeding the drive threatening temperature or the user specified temperature This feature is controlled by the Enable Warning EWasc bit and the reporting mechanism is controlled by the Method of Reporting Informational Exceptions field MRIE on the Informational Exceptions Control IEC mode page 1Ch The current algorithm implements two temperature trip points The first trip point is set at 68 C which is the maximum temperature limit according to the drive specification The second trip point is user selectable using the Log Select command The reference temperature parameter in the temperature log page see Table 11 18 Cheetah 15K 6 SAS Product Manual Rev B can be used to set this trip point The default value for this drive is 68 C however you can set it to any value in the range of 0 to 68 If you specify a temperature greater than 68 C in this field the temperature is rounded down to 68 C A sense code is sent to the host to indicate the rounding of the parameter field Table 11 Temperature Log Page 0Dh Parameter Code Description 0000h Primary Temperature 0001h Reference Temperature 5 2
86. r on the surface of the printed circuit board assembly PCBA or exposed to an ambient relative humidity greater than 95 Materials used in cabinet fabrication such as vulca nized rubber that can outgas corrosive compounds should be minimized or eliminated The useful life of any electronic equipment may be extended by replacing materials near circuitry with sulfide free alternatives 6 4 8 Electromagnetic susceptibility See Section 2 1 1 1 6 5 Mechanical specifications Refer to Figure 12 for detailed physical dimensions See Section 8 3 Drive mounting Height 1 028 in 26 11 mm Width 4 010 in 101 85 mm Depth 5 787 in 146 99 mm Weight ST3450856SS 1 563 pounds 0 709 kilograms ST3450056SS ST3300656SS 1 53 pounds 0 694 kilograms ST3300056SS ST3146356SS 1 487 pounds 0 674 kilograms ST3146756SS 40 Cheetah 15K 6 SAS Product Manual Rev B Y q 26 11 MAX i 1 028 MAX 2X 20 14
87. r sizes the format times shown below may need to be increased by 30 minutes ST3450856SS ST3300656SS ST3146356SS ST3450056SS ST3300056SS ST3146756SS Maximum with verify 176 144 100 Maximum without verify 88 72 50 Note There is no significant difference in the format time between FDE and non FDE models of the same capacity Execution time measured from receipt of the last byte of the Command Descriptor Block CDB to the reguest for a Status Byte Transfer to the Initiator excluding connect disconnect 4 2 3 General performance characteristics Sustainable disk transfer rate Minimum 112 Mbytes sec typical Maximum 171 Mbytes sec typical SAS Interface maximum instantaneous transfer rate 300 Mbytes sec per port Logical block sizes Default is 512 byte data blocks Sector sizes variable to 512 520 and 528 kbytes Read write consecutive sectors on a track Yes Flaw reallocation performance impact for flaws reallocated at format time using Negligible the spare sectors per sparing zone reallocation scheme Average rotational latency 2 0 msec Assumes system ability to support the rates listed and no cable loss 1 MB sec 1 000 000 bytes sec 4 3 Start stop time The drive accepts the commands listed in the SAS Interface Manual less than 3 seconds after DC power has been applied If the drive receives a NOTIFY ENABLE SPINUP primitive through either port and has not received a START STOP UNIT command with the STAR
88. rding Seagate products and services visit www seagate com Worldwide support is available 24 hours daily by email for your guestions Presales Support Presales Seagate com Technical Support DiscSupport Seagate com Warranty Support http www seagate com support service index html mySeagate my seagate com is the industry s first Web portal designed specifically for OEMs and distributors It provides self service access to critical applications personalized content and the tools that allow our partners to manage their Seagate account functions Submit pricing requests orders and returns through a single password protected Web interface anytime anywhere in the world spp seagate com spp seagate com supports Seagate resellers with product information program benefits and sales tools You may register for customized communications that are not available on the web These communications contain product launch EOL pricing promotions and other channel related information To learn more about the benefits or to register go to spp seagate com any time from anywhere in the world Seagate Service Centers Presales Support Our Presales Support staff can help you determine which Seagate products are best suited for your specific application or computer system as well as product availability and compatibility Technical Support Seagate technical support is available to assist you online at support seagate com or through one of our c
89. s been transferred into the cache but before the data has been written to the medium If an error occurs while writing the data to the medium and Good status has already been returned a deferred error will be gen erated The Synchronize Cache command may be used to force the drive to write all cached write data to the medium Upon completion of a Synchronize Cache command all data received from previous write commands will have been written to the medium Table 9 3 2 1 shows the mode default settings for the drive 4 5 2 Prefetch operation If the Prefetch feature is enabled data in contiguous logical blocks on the disk immediately beyond that which was requested by a Read command are retrieved and stored in the buffer for immediate transfer from the buffer to the host on subsequent Read commands that request those logical blocks this is true even if cache operation is disabled Though the prefetch operation uses the buffer as a cache finding the reguested data in the buffer is a prefetch hit not a cache operation hit To enable Prefetch use Mode Select page 08h byte 12 bit 5 Disable Read Ahead DRA bit DRA bit 0 enables prefetch The drive does not use the Max Prefetch field bytes 8 and 9 or the Prefetch Ceiling field bytes 10 and 11 When prefetch read look ahead is enabled enabled by DRA 0 the drive enables prefetch of contiguous blocks from the disk when it senses that a prefetch hit will likely occur The drive
90. s for the disk drives documented in this publication Current supplier declarations include disclosure of the inclusion of any RoHS regulated substance in such parts or materials 4 Cheetah 15K 6 SAS Product Manual Rev B Seagate also has internal systems in place to ensure ongoing compliance with the RoHS Directive and all laws and regulations which restrict chemical content in electronic products These systems include standard operat ing procedures that ensure that restricted substances are not utilized in our manufacturing operations labora tory analytical validation testing and an internal auditing process to ensure that all standard operating procedures are complied with 2 4 Reference documents SCSI Commands Reference Manual Seagate part number 100293068 SAS lnterface Manual Seagate part number 100293071 Applicable ANSI SAS documents SFF 8323 3 5 Drive Form Factor with Serial Connector SFF 8460 HSS Backplane Design Guidelines SFF 8470 Multi Lane Copper Connector SFF 8482 SAS Plug Connector ANSI INCITS xxx Serial Attached SCSI SAS Standard T10 1562 D ISO IEC 14776 xxx SCSI Architecure Model 3 SAM 3 Standard T10 1561 D ISO IEC 14776 xxx SCSI Primary Commands 3 SPC 3 Standard T10 1416 D ISO IEC 14776 xxx SCSI Block Commands 2 SBC 2 Standard T10 1417 D ANSI Small Computer System Interface SCSI Documents X3 270 1996 SCSI 3 Architecture Model Specification for Acoustic Test Requirement and Procedures Seagate part n
91. sholds are optimized to minimize false and failed predictions Controlling S M A R T The operating mode of S M A R T is controlled by the DEXCPT and PERF bits on the Informational Exceptions Control mode page 1Ch Use the DEXCPT bit to enable or disable the S M A R T feature Setting the DEX CPT bit disables all S M A R T functions When enabled S M A R T collects on line data as the drive performs normal read and write operations When the PERF bit is set the drive is considered to be in On line Mode Only and will not perform off line functions You can measure off line attributes and force the drive to save the data by using the Rezero Unit command Forcing S M A R T resets the timer so that the next scheduled interrupt is in two hours You can interrogate the drive through the host to determine the time remaining before the next scheduled mea surement and data logging process occurs To accomplish this issue a Log Sense command to log page 0x3E This allows you to control when S M A R T interruptions occur Forcing S M A R T with the RTZ command resets the timer Performance impact S M A R T attribute data is saved to the disk so that the events that caused a predictive failure can be recre ated The drive measures and saves parameters once every two hours subject to an idle period on the drive interfaces The process of measuring off line attribute data and saving data to the disk is uninterruptable The maxi
92. sponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 81314635688 CURRENT POWER vs THROUGHPUT SAS 3 0GB Random 8 Block Reads 16 00 5Vok A a 12 Volt A 14 00 4 Watts 12 00 v 10 00 8 0 2 6 00 4 0 2 00 0 00 0 0 5 0 100 0 150 0 200 0 250 0 300 0 350 0 400 0 450 0 VOs per Second Figure 9 ST3146756SS FDE 3 Gbit DC current and power vs input output operations per second Cheetah 15K 6 SAS Product Manual Rev B 35 6 4 Environmental limits Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part Altitude and atmospheric pressure specifications are referenced to a standard day at 58 7 F 14 8 C Maximum wet bulb temperature is 82 F 28 C 6 4 1 Temperature a Operating The maximum allowable continuous or sustained HDA case temperature for the rated Annualized Failure Rate AFR is 122 F 50 C The maximum allowable HDA case temperature is 60 C Occasional excur sions of HDA case temperatures above 122 F 50 C or below 41 F 5 C may occur without impact to the specified AFR Continual or sustained operation at HDA case temperatures outside these limits may degrade AFR Provided the HDA case temperatures limits are met the drive meets all specifications over a 41 F to 131 F 5 C to 55 C drive a
93. t are measured after a 10 minute warm up No terminator power Cheetah 15K 6 SAS Product Manual Rev B 6 2 1 Conducted noise immunity Noise is specified as a periodic and random distribution of freguencies covering a band from DC to 10 MHz Maximum allowed noise values given below are peak to peak measurements and apply at the drive power connector 5V 250 mV pp from 0 to 100 kHz to 20 MHz 12V 800 mV pp from 100 Hz to 8 KHz 450 mV pp from 8 KHz to 20 KHz 250 mV pp from 20 KHz to 5 MHz 6 2 2 Power sequencing The drive does not require power sequencing The drive protects against inadvertent writing during power up and down 6 2 3 Current profiles The 12V and 5V current profiles are shown below in the following figures Note All times and currents are typical See Tables 12 14 and 16 for maximum current requirements Cheetah 15K 6 SAS Product Manual Rev B 27 C2 and F1 12V spinup current profile gt gt C3 and F2 SV spinup current profile gt gt Figure 3 Typical 146GB current profiles Cheetah 15K 6 SAS Product Manual Rev B 6 3 Power dissipation ST3450856SS model Typical power dissipation under idle conditions in 3Gb operation is 11 85 watts 40 44 BTUs per hour To obtain operating power for typical random read operations refer to the following I O rate curve see Figure 4 Locate the typical I O rate for a drive in your system on the horizontal axis and read the corresponding
94. ted Read error after retries are exhausted Write error after retries are exhausted Recovered errors will not be reported as diagnostic failures 5 2 6 2 Implementation This section provides all of the information necessary to implement the DST function on this drive 5 2 6 2 1 State of the drive prior to testing The drive must be in a ready state before issuing the Send Diagnostic command There are multiple reasons why a drive may not be ready some of which are valid conditions and not errors For example a drive may be in process of doing a format or another DST It is the responsibility of the host application to determine the not ready cause While not technically part of DST a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive Cheetah 15K 6 SAS Product Manual Rev B 19 A Drive Not Ready condition is reported by the drive under the following conditions Motor will not spin Motor will not lock to speed Servo will not lock on track Drive cannot read configuration tables from the disk Inthese conditions the drive responds to a Test Unit Ready command with an 02 04 00 or 02 04 03 code 5 2 6 2 2 Invoking DST To invoke DST submit the Send Diagnostic command with the appropriate Function Code 001b for the short test or 010b for the extended test in bytes 1 bits 5 6 and 7 5 2 6 2 3 Short and extended tests DST has two testing options 1 short 2 extende
95. the STRICT bit in Mode page 00h byte 2 bit 1 is set to one the drive responds as it does for any attempt to change an unchangeable parameter 4 5 1 Caching write data Write caching is a write operation by the drive that makes use of a drive buffer storage area where the data to be written to the medium is stored while the drive performs the Write command If read caching is enabled RCD 0 then data written to the medium is retained in the cache to be made avail able for future read cache hits The same buffer space and segmentation is used as set up for read functions The buffer segmentation scheme is set up or changed independently having nothing to do with the state of RCD When a write command is issued if RCD 0 the cache is first checked to see if any logical blocks that are to be written are already stored in the cache from a previous read or write command If there are the respective cache segments are cleared The new data is cached for subseguent Read commands If the number of write data logical blocks exceed the size of the segment being written into when the end of the segment is reached the data is written into the beginning of the same cache segment overwriting the data that was written there at the beginning of the operation however the drive does not overwrite data that has not yet been written to the medium If write caching is enabled WCE 1 then the drive may return Good status on a write command after the data ha
96. to the fourth point 8 4 Grounding Signal ground PCBA and HDA ground are connected together in the drive and cannot be separated by the user The equipment in which the drive is mounted is connected directly to the HDA and PCBA with no electri cally isolating shock mounts If it is desired for the system chassis to not be connected to the HDA PCBA ground the systems integrator or user must provide a nonconductive electrically isolating method of mount ing the drive in the host eguipment Increased radiated emissions may result if you do not provide the maximum surface area ground connection between system ground and drive ground This is the system designer s and integrator s responsibility Cheetah 15K 6 SAS Product Manual Rev B 49 50 Cheetah 15K 6 SAS Product Manual Rev B 9 0 Interface reguirements This section partially describes the interface reguirements as implemented on Cheetah 15K 6 drives Addi tional information is provided in the SAS Interface Manual part number 100293071 9 1 SAS features This section lists the SAS specific features supported by Cheetah 15K 6 drives 9 1 1 task management functions Table 19 lists the SAS task management functions supported Table 19 SAS task management functions supported Task name Supported Abort Task Yes Clear ACA Yes Clear task set Yes Abort task set Yes Logical Unit Reset Yes Query Task Yes 9 1 2 task management responses Table 20 lists th
97. uct Manual Rev B 63 0 80 6X e BI gt 702 4 65 E 0 52 0 08 x 45 2 00 3X m gt 0 45 0 03 7X SBB b o 10 AJE E 42 73 REF ji 41 13 0 15 0 208 0 30 0 05 2X BA G CT A B us 4 00 0 08 m o FL OF DATUM D b 0 15 D Y i i3 H a A R0 30 0 08 4X 0 30 0 05 40 B C SEE Detaill 33 43 0 05 gt 5 15 875 gt 15 875 1 27 14X 27 6X FA 15 08 0 84 0 05 22X 0 1518 A 4 90 0 08 0 35MIN P15 e S7 OF DATUM B Figure 15 SAS connector dimensions 64 Cheetah 15K 6 SAS Product Manual Rev B Detail A Bu 5 S8 0 30 0 05 x 45 5X 2 25 0 05 4 gt 1 0 40 0 05 X 45 3X 4 85 0 05 a 0 10
98. umber 30553 001 Package Test Specification Seagate P N 30190 001 under 100 Ib Package Test Specification Seagate P N 30191 001 over 100 Ib In case of conflict between this document and any referenced document this document takes precedence Cheetah 15K 6 SAS Product Manual Rev B 5 Cheetah 15K 6 SAS Product Manual Rev B 3 0 General description Cheetah 15K 6 drives provide high performance high capacity data storage for a variety of systems including engineering workstations network servers mainframes and supercomputers The Serial Attached SCSI inter face is designed to meet next generation computing demands for performance scalability flexibility and high density storage reguirements Cheetah 15K 6 drives support the Serial Attached SCSI Protocol as described in the ANSI specifications this document and the SAS Interface Manual part number 100293071 which describes the general interface characteristics of this drive Cheetah 15K 6 drives are classified as intelligent peripherals and provide level 2 conformance highest level with the ANSI SCSI 1 standard The SAS connectors cables and electrical inter face are compatible with Serial ATA SATA giving future users the choice of populating their systems with either SAS or SATA hard disk drives This allows you to continue to leverage your existing investment in SCSI while gaining a 3Gb s serial data transfer rate Cheetah 15K 6 SAS FDE models have provisions for Sec
99. urity of Data at Rest based on the standards defined by the Trusted Computing Group see www trustedcomputinggroup org Never disassemble the HDA and do not attempt to service items in the sealed enclosure heads media actu ator etc as this requires special facilities The drive does not contain user replaceable parts Opening the HDA for any reason voids your warranty Cheetah 15K 6 drives use a dedicated landing zone at the innermost radius of the media to eliminate the pos sibility of destroying or degrading data by landing in the data zone The heads automatically go to the landing zone when power is removed from the drive An automatic shipping lock prevents potential damage to the heads and disks that results from movement dur ing shipping and handling The shipping lock disengages and the head load process begins when power is applied to the drive The drives also use a high performance actuator assembly with a low inertia balanced patented straight arm design that provides excellent performance with minimal power dissipation Cheetah 15K 6 SAS Product Manual Rev B 7 3 1 Standard features Cheetah 15K 6 drives have the following standard features 1 5 3 Gbit Serial Attached SCSI SAS interface Integrated dual port SAS controller supporting the SCSI protocol Support for SAS expanders and fanout adapters Firmware downloadable using the SAS interface 128 deep task set gueue Supports up to 32 initiators Jum

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