Seagate Momentus 320GB SATA 6Gb/s 2.5"
Contents
1. PIO mode 4 default 204 Multiword DMA mode 0 214 Multiword DMA mode 1 224 Multiword DMA mode 2 404 Ultra DMA mode 0 414 Ultra DMA mode 1 424 Ultra DMA mode 2 434 Ultra DMA mode 3 444 Ultra DMA mode 4 454 Ultra DMA mode 5 464 Ultra DMA mode 6 55 Disable read look ahead read cache feature 82 Disable write cache Enable read look ahead read cache feature default C1y Disable the Free Fall Protection feature 414 above enables the Free Fall Protection feature Fly Report full capacity available At power on or after a hardware or software reset the default values of the features are as indicated above MOMENTUS THIN SATA PRODUCT MANUAL REV B 24 SERIAL ATA SATA INTERFACE 4 3 3 S M A R T commands S M A R T provides near term failure prediction for disk drives When S M A R T is enabled the drive monitors predetermined drive attributes that are susceptible to degradation over time If self monitoring determines that a failure is likely S M A R T makes a status report available to the host Not all failures are predictable S M A R T predictability is limited to the attributes the drive can monitor For more information on S M A R T commands and implementation see the Draft ATA 5 Standard SeaTools diagnostic software activates a built in drive self test DST S M A R T command for 4 that eliminates unnecessary drive returns The diagnostic software ships with all new2. This mode is not typical Read write power and current Read write power is measured with the heads on track based on three 63 sector read or write operations every 100 ms Idle mode power Idle mode power is measured with the drive up to speed with servo electronics active and with the heads in a random track location Standby mode During standby mode the drive accepts commands but the drive is not spinning and the servo and read write electronics are in power down mode MOMENTUS THIN SATA PRODUCT MANUAL REV B 6 DRIVE SPECIFICATIONS Table 4 DC Power Requirements Power Dissipation 5V input average 25 C Spinup max 1 00A Seek average 1 80W Write average 1 90W Read average 1 70W Idle performance 1 1 50W Idle active 0 90W Idle low power mode 0 65W Standby 0 18W Sleep 0 18W 1 During periods of drive idle some offline activity may occur according to the S M A R T specification which may increase acoustic and power to operational levels 2 Standby power is measured at steady state after 200ms from transition 2 7 1 1 Typical current profiles The typical 5V startup and operation current profile is shown in Figure 1 Figure 1 Typical 5V Startup and Operation Current Profile 24 Sep 13 18 20 38 2 m em CUm GEM 55 200 mv Unload EL PIdle idlet SEMEN aliii mm RR Pe Ee 5 5 1 2 DC E 2 M DC 100 kS s 1 V DC TT 3 DC 1 68 V 4 2 V DC O STOPPED MO
3. drives and is also available at http www seagate com support downloads seatools This drive is shipped with S M A R T features disabled You must have a recent BIOS or software package that supports S M A R T to enable this feature The table below shows the S M A R T command codes that the drive uses Table 13 S M A R T Commands Code in features register S M A R T command DOH S M A R T Read Data D24 S M A R T Enable Disable Attribute Autosave D34 S M A R T Save Attribute Values D4 S M A R T Execute Off line Immediate runs DST D5y S M A R T Read Log Sector D64 S M A R T Write Log Sector D8y S M A R T Enable Operations D94 S M A R T Disable Operations DA S M A R T Return Status If an appropriate code is not written to the Features Register the command is aborted and 0x04 abort is written to the Error register MOMENTUS THIN SATA PRODUCT MANUAL REV B 25 acoustics 10 active mode 8 Address 18 agency certification 12 ambient temperature 6 areal density 5 ATAcommands 18 Australia New Zealand Standard AS NZS3548 1995 12 Australian Communication Authority ACA 12 Australian C Tick 12 Average seek time 6 B buffer 5 cables and connectors 15 capacity 4 CE mark 12 certification 12 Check Power Mode 19 China RoHS directive 14 compatibility 12 conducted noise 8 conducted RF immunity 11 configuring and mounting the drive 15 connectors 15 corro
4. in performance when subsequently put into operation is 800 Gs based on a nonrepetitive half sine shock pulse of 2 ms duration The nonoperating shock level that the drive can experience without incurring physical damage or degradation in performance when subsequently put into operation is 1000 Gs based on a nonrepetitive half sine shock pulse of 1 ms duration MOMENTUS THIN SATA PRODUCT MANUAL REV B 9 DRIVE SPECIFICATIONS 2 8 2 Vibration vibration specifications assume that the drive is mounted securely with the input vibration applied at the drive mounting screws Vibration may be applied in the X Y or Z axis 2 8 2 1 Operating vibration The maximum vibration levels that the drive may experience while meeting the performance standards specified in this document are specified below 5 200 Hz 2 0 Gs 0 to peak Max displacement may apply below 10 Hz 201 500 Hz 1 0 Gs 0 to peak 2 8 2 2 Nonoperating vibration The maximum nonoperating vibration levels that the drive may experience without incurring physical damage or degradation in performance when subsequently put into operation are specified below 5 500 Hz 5 0 Gs 0 to peak Max displacement may apply below 22 Hz 2 9 ACOUSTICS Drive emission of sound is measured consistent with the ECMA 74 and its referenced standards Testing is conducted at room temperature approximately 25 C Emission levels are reported as the total A weighted sound power l
5. 1 500 GB 320 GB Guaranteed sectors 976 773 168 625 142 448 Disks 1 Bytes per sector 512 logical 4096 physical Recording density 1875 Kb in Track density 375 Ktracks in avg Areal density 670 Gb in avg Spindle speed 7200 RPM Sustained data transfer rate OD 135 MB s max I O data transfer rate 600 MB s max PIO modes 0 4 ATA data transfer modes supported Multiword DMA modes 0 2 Ultra DMA modes 0 6 Cache buffer 32 MB 6 8 0 2 mm 0 268 008 in 69 85 0 25 mm 2 750 0 010 in 100 35 40 20 0 25 mm 3 951 0 008 0 010 in Weight typical 95 g 0 209 Ib Average latency 4 2ms Voltage tolerance including noise 5V 1 596 Operating temperature 0 to 60 C yiii ad temperature u o 20 C per hour max operating Tamperaure gradient max 35 C per hour max nonoperating 5 to 95 operating 5 to 95 nonoperating Relative humidity Relative humidity gradient 30 per hour max 37 7 C max operating Wet bulb temperature max 40 0 C max nonoperating MOMENTUS THIN SATA PRODUCT MANUAL REV B 3 DRIVE SPECIFICATIONS Table 1 Drive Specifications Summary continued Drive Specification ST500LM021 ST320LM010 Altitude operating 304 8 m to 3048 m 1000 ft to 10 000 ft Altitude nonoperating m below mean sea level max 304 8 m to 12 192 m 1000 ft to 40 000 ft Operational Shock 400 Gs at 2 ms max Non Operati
6. 14 CORROSIVE ENVIRONMENT Seagate electronic drive components pass accelerated corrosion testing equivalent 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 Users should use caution exposing any electronic components to uncontrolled chemical pollutants and corrosive chemicals as electronic drive component reliability can be affected by the installation environment The silver 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 water 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 vulcanized 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 MOMENTUS THIN SATA PRODUCT MANUAL REV B 14 3 0 CONFIGURING AND MOUNTING THE DRIVE This section contains the specifications and instructions for configuring and mounting the drive 3 1 HANDLING AND STATIC DISCHARGE PRECAUTIONS After unpacking and before ins
7. 30 Rev B January 2014
8. 726 character string padded with blanks to end of string nes 27 46 Drive model number ST500LM021 40 ASCII characters padded with blanks to end of string ST320LM010 id Mein sectors per interrupt on Read multiple and Write multiple 16 80104 48 Trusted Computing Feature set options 00004 49 Standard Standby timer IORDY supported and may be disabled 2 00 50 Capabilities 4000 51 PIO data transfer cycle timing mode 02004 52 Retired 0200 53 Words 54 58 64 70 and 88 are valid 00074 54 Number of current logical cylinders 55 Number of current logical heads 56 Number of current logical sectors per logical track 57 58 Current capacity in sectors 59 Number of sectors transferred during a Read Multiple or Write Multiple command MOMENTUS THIN SATA PRODUCT MANUAL REV B 20 SERIAL ATA SATA INTERFACE Table 10 Identify Device command Word Description Value Total number of user addressable sectors This field contains a value that is one greater than the total number of E 60 61 user addressable sectors The maximum value that shall be placed in this ARREZ field is OFFFFFFFh The OFFFFFFFh value applies to all capacities over 137GB see Section 2 1 for related information 68 0074 64 Advanced PIO modes supported modes 3 and 4 supported 0003 65 Min
9. 96 AM with 1 kHz sine 900 MHz 3 V m 50 pulse modulation 200 Hz Surge immunity 1 kV differential 2 kV common AC mains EN 61000 4 5 95 EN 61000 4 6 97 EN 61000 4 8 97 EN 61000 4 11 94 A Conducted RF immunity 150 kHz to 80 MHz 3 Vrms 80 AM with 1 kHz sine A Power Frequency H field immunity 1 A m 50Hz 60Hz 3 axes A Electrical fast transient t 1 kV on AC mains 0 5 kV on external I O 61000 4 4 95 3096 Reduction for 25 cycles C Voltage dips interrupts gt 95 Reduction for 250 cycles gt 95 0 5 cycles UO 2 11 RELIABILITY Nonrecoverable read errors 1 per 1014 bits read max Load Unload U UL 25 C 50 relative humidity 600 000 software controlled power on off cycles 20 000 hard power on off cycles To determine the warranty for a specific drive use a web browser to access the following web page http www seagate com support warranty and replacements Warranty From this page click on the Verify Your Warranty link You will be asked to pro vide the drive serial number model number or part number and country of pur chase The system will display the warranty information for your drive MOMENTUS THIN SATA PRODUCT MANUAL REV B 11 DRIVE SPECIFICATIONS 2 12 AGENCY CERTIFICATION 2 12 1 Safety certification These products are certified to meet the requirements of UL60950 1 CSA60950 1 and EN60950 and so marked as to the certify agency 2 12 2 Electromagneti
10. MA Extended 35h Write DMA without Retries CBh Write Long with Retries 32h Write Long without Retries 33h Write Multiple C5h Write Multiple Extended 39h Write Sectors 30h 31h Write Sectors Extended 34h ATA standard power management commands Check Power Mode E5h Idle E3h Idle Immediate Eth Sleep E6h Standby E2h Standby Immediate EOh ATA standard security commands Security Set Password F1h Security Unlock F2h Security Erase Prepare F3h Security Erase Unit F4h Security Freeze Lock F5h Security Disable Password F6h MOMENTUS THIN SATA PRODUCT MANUAL REV B 19 4 3 1 Identify Device command SERIAL ATA SATA INTERFACE The Identify Device command command code transfers information about the drive to the host following power up The data is organized as a single 512 byte block of data whose contents are shown in Table 10 All reserved bits or words should be set to zero Parameters listed with an x are drive specific or vary with the state of the drive Refer to Drive Specifications on page 3 for default parameter settings The following commands contain drive specific features that may not be included in the Serial ATA specification Table 10 Identify Device command Configuration information e Bit 15 0 ATA 1 ATAPI 0 Bit 7 removable media OC5Ay Bit 6 removable controller Bit 0 reserved 10 19 Serial number 20 ASCII characters 0000 none ASCII 29
11. MENTUS THIN SATA PRODUCT MANUAL REV B 7 DRIVE SPECIFICATIONS 2 7 2 Conducted noise Input noise ripple is measured at the host system power supply across an equivalent 15 ohm resistive load on the 5 volt line m Using 5 volt power the drive is expected to operate with a maximum of 100 mV peak to peak square wave injected noise at up to 20 MHz Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read write current 2 74 3 Voltage tolerance Voltage tolerance including noise m 45V t596 2 7 4 Power management modes The drive provides programmable power management to provide greater energy efficiency In most systems power management is controlled through the system setup program The drive features the following power management modes Power modes Heads Spindle Buffer Active operating Tracking Rotating Full power Idle performance Tracking Rotating Self refresh low power Idle active Floating Rotating Self refresh low power Idle low power Parked Rotating Self refresh low power Standby Parked Stopped Self refresh low power Sleep Parked Stopped Self refresh low power m Active mode The drive is in active mode during the read write and seek operations Idle mode The buffer remains enabled and the drive accepts all commands and returns to active mode any time disk access is necessary m Standby mode The drive enters standby mode when the host sends a
12. NUAL REv B 16 4 0 SERIAL ATA SATA INTERFACE These drives use the industry standard Serial ATA interface that supports FIS data transfers It supports ATA programmed input output PIO modes 0 4 multiword DMA modes 0 2 and Ultra DMA modes 0 6 The drive also supports the use of the IORDY signal to provide reliable high speed data transfers For detailed information about the Serial ATA interface refer to the Serial ATA High Speed Serialized AT Attachment specification 4 1 HoT PLUG COMPATIBILITY Momentus Thin SATA drives incorporate connectors which enable you to hot plug these drives in accordance with the Serial ATA High Speed Serialized AT Attachment specification revision 2 0 This specification can be downloaded from www serialata org This device requires a COMRESET from the host after a hotplug event 4 2 SERIAL ATA DEVICE PLUG CONNECTOR PIN DEFINITIONS Table 8 summarizes the signals on the Serial ATA interface and power connectors Refer to the Notes below Table 8 Serial ATA Connector Pin Definitions Segment Pin Function Definition Differential signal pair A from Phy Differential signal pair B from Phy 3 3V power 3 3V power 3 3V power pre charge 2nd mate Ground 1st mate Ground 2nd mate C 9 V5 5V power P12 Ground 1st mate P15 V12 12V power NOTES 1 pins are in a single row with a 1 27 mm 0 050 in pitch 2 The comments on the mating sequence apply to t
13. SPECIEIGATIONS gt see patre ee bead reves Ree acido de e dente 6 2 7 1 Power CONSUMPTION se as sterke pete eae ea dawned ae Raa ERE 6 2 7 2 GOnGUCIEd NOISE ret re re SHIRE Ran A Raa Fe REL C P E ENDE 8 2 7 3 Voltage tolerance Lae eed aed horas Seba DEA pew te ee 8 2 7 4 Power management 65 1 8 2 8 ENVIRONMENTAL SPECIFICATIONS irsk ONETARA EPERE PERRE hs 9 2 8 1 SMOG ENE EEE ST E n a EE EEANN 9 2 8 2 MIDFATION ea 4 ace teat nee eed a went 10 2 9 ACOUSTICS irat v heat i ain 10 2 9 1 Test for prominent discrete tones 5 10 2 10 ELECTROMAGNETIC IMMUNITY lees 11 2 11 RELIABILITY Dex QUA AOPELATQAN IN AI UR eed 11 2 12 AGENCY CERTIFICATION seh 12 2 12 1 Safety certification 0 0 eee 12 2 12 2 Electromagnetic Compatibility EMC eee 12 21613 PCC veriflCallOn a z aoa eu beu T PER EUER 19 2 13 ENVIRONMENTAL PROTECTION lees 13 2 13 1 European Union Restriction of Hazardous Substances RoHS Directive 13 2 13 2 China Restriction of Hazardous Substances RoHS Directive 14 2 14 CORROSIVE ENVIRONMENT bei editera SQGRCOLGIG eR DEW Rb End ES RAE 14 CONFIGURING AND MOUNTING THE ee
14. Seagate Product Manual Momentus Thin SATA 7200 RPM Standard models ST500LM021 ST320LMO10 Gen 3 0 100737930 Rev B January 2014 Document Revision History Revision Date Description of Change Rev A 11 20 2013 Initial release Rev B 01 03 2014 3 amp 6 2014 Seagate Technology LLC All rights reserved Publication number 100737930 Rev B January 2014 Seagate Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and or other countries Momentus Thin and SeaTools are either trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and or other countries The FIPS logo is a certification mark of NIST which does not imply product endorsement by NIST the U S or Canadian governments All other trademarks or registered trademarks are the property of their respective owners No part of this publication may be reproduced in any form without written permission of Seagate Technology LLC Call 877 PUB TEK1 877 782 8351 to request permission When referring to drive capacity one gigabyte or GB equals one billion bytes and one terabyte or TB equals one trillion bytes Your computer s operating system may use a different standard of measurement and report a lower capacity In addition some of the listed capacity is used for formatting and other functions and thus will not be ava
15. ances RoHS Directive restricts the presence of chemical substances including Lead Cadmium Mercury Hexavalent Chromium PBB and PBDE in electronic products effective July 2006 This drive is manufactured with components and materials that comply with the RoHS Directive MOMENTUS THIN SATA PRODUCT MANUAL REV B 13 DRIVE SPECIFICATIONS 2 13 2 China Restriction of Hazardous Substances RoHS Directive P Ed PRI fi Poin 11855 This product has an Environmental Protection Use Period EPUP of 20 years The following table contains information mandated by China s Marking Requirements for Control of Pollution Caused by Electronic Information Products Standard Qj Be RAB 20 HP ABR CEPUP FROST OH BP a PSS eis 15 FRCS EK Ppa AES Toxic or Hazardous Substances or Elements A HA S Hym SEL Hexavalent Polybrominated Polybrominated p Mercury Cadmium Chromium Diphenyl Diphenyl Ether Name of Parts aK ZIRE 2R HHEH m Hg POBA H O indicates the hazardous and toxic substance content of the part at the homogenous material level is lower than the threshold defined by the China RoHS MCV Standard FARM MEE L ME ew AA EART H 5 MCV ERE EKI 188 8 o X indicates the hazardous and toxic substance content of the part at the homogenous material level is over the threshold defined by the China RoHS MCV Standard X RABE FARE ME KEEMA eB LF RoHS MCV baie ite CBT 2
16. c Compatibility EMC Hard drives that display the CE mark comply with the European Union EU requirements specified in the Electromagnetic Compatibility Directive 2004 108 EC as put into place 20 July 2007 Testing is performed to the levels specified by the product standards for Information Technology Equipment ITE Emission levels are defined by EN 55022 Class B and the immunity levels are defined by EN 55024 Drives are tested in representative end user systems Although CE marked Seagate drives comply with the directives when used in the test systems we cannot guarantee that all systems will comply with the directives The drive is designed for operation inside a properly designed enclosure with properly shielded I O cable if necessary and terminators on all unused I O ports Computer manufacturers and system integrators should confirm EMC compliance and provide CE marking for their products Korean RRL If these drives have the Korean Communications Commission KCC logo they comply with paragraph 1 of Article 11 of the Electromagnetic Compatibility control Regulation and meet the Electromagnetic Compatibility EMC Framework requirements of the Radio Research Laboratory RRL Communications Commission Republic of Korea These drives have been tested and comply with the Electromagnetic Interference Electromagnetic Susceptibility EMI EMS for Class B products Drives are tested in a representative end user system by a Korean recognize
17. d 1 5 11 0 4 2 Track to track Average Average latency These drives are designed to consistently meet the seek times represented in this manual Physical seeks regardless of mode such as track to track and average are expected to meet the noted values However due to the manner in which these drives are formatted benchmark tests that include command overhead or measure logical seeks may produce results that vary from these specifications 2 6 START STOP TIMES Table 3 Start stop times Typical seek times ms Typical Max 25 C Power on to ready sec 3 5 4 0 Standby to ready sec 3 0 3 5 2 7 POWER SPECIFICATIONS The drive receives DC power 5V through a native SATA power connector refer to Figure 2 2 7 1 Power consumption Power requirements for the drives are listed in the table in Table 4 Typical power measurements are based on an average of drives tested under nominal conditions at 25 C ambient temperature These power measurements are done with Interface Power Management modes like HIPM and DIPM enabled Spinup power Spinup power is measured from the time of power on to the time that the drive spindle reaches operating speed Seek mode During seek mode the read write actuator arm moves toward a specific position on the disk surface and does not execute a read or write operation Servo electronics are active Seek mode power is measured based on three random seek operations every 100 ms
18. d Multiple C4h Read Multiple Extended 29h Read Native Max Address F8h Read Native Max Address Extended 27h Read Sectors 20h Read Sectors Extended 24h Read Sectors without Retries 21h Read Verify Sectors 40h Read Verify Sectors Extended 42h Read Verify Sectors without Retries 41h Seek 70h Set Features EFh Set Max Address F9h Note Individual Set Max commands are identified by the Address 00 value placed in the Set Max Features register as defined to Password 01g the right Lock 024 Unlock 03 Freeze Lock 044 Set Max Address Ext 37h Set Multiple Mode C6h S M A R T Disable Operations BOh D9h S M A R T Enable Disable Autosave BOh D2h MOMENTUS THIN SATA PRODUCT MANUAL REV B 18 SERIAL ATA SATA INTERFACE Table 9 Supported ATA commands ATA standard commands names Command code in hex S M A R T Enable Operations BOh D8h S M A R T Enable Disable Auto Offline BOh DBh S M A R T Enable One Attribute Modification BOh EOh S M A R T Execute Offline BOh D4h S M A R T Free Fall Protection Host Interface FEh S M A R T Read Attribute Thresholds BOh D1h S M A R T Read Data BOh DOh S M A R T Read Log Sector BOh D5h S M A R T Return Status BOh DAh S M A R T Save Attribute Values BOh D3h S M A R T Write Attribute Thresholds BOh D7h S M A R T Write Attribute Values BOh E1h S M A R T Write Log Sector BOh D6h Write Buffer E8h Write DMA CAh Write D
19. d lab Certificate number KCC REM STX Momentus Thin B m Trade name or applicant Seagate Technology LLC Certificate date 30 September 2013 m Manufacturer nationality USA Singapore and China Australian C Tick N176 If these models have the C Tick marking they comply with the Australia New Zealand Standard AS NZS3548 1995 and meet the Electromagnetic Compatibility EMC Framework requirements of the Australian Communication Authority ACA MOMENTUS THIN SATA PRODUCT MANUAL REV B 12 DRIVE SPECIFICATIONS 2 12 3 FCC verification These drives are intended to be contained solely within a personal computer or similar enclosure not attached as an external device As such each drive is considered to be a subassembly even when it is individually marketed to the customer As a subassembly no Federal Communications Commission verification or certification of the device is required Seagate has tested this device in enclosures as described above to ensure that the total assembly enclosure disk drive motherboard power supply etc does comply with the limits for a Class B computing device pursuant to Subpart J Part 15 of the FCC rules Operation with noncertified assemblies is likely to result in interference to radio and television reception Radio and television interference This equipment generates and uses radio frequency energy and if not installed and used in strict accordance with the manufacturer s instructions may caus
20. e for cooling Use only M3 x 0 5 mounting screws Do not overtighten the mounting screws Maximum torque 4 0 in Ib 0 4519 N m Four 4 threads 0 080 in 2 032 mm minimum screw engagement recommended Avoid excessive drive distortion when mounting Refer to the following specifications for stiffness deflection information Top cover stiffness deflection Operating no performance degradation emitted noise 10 mm probe 1 02kgf or mechanical damage or hard errors 5 mm probe 0 92kgf Non operating no hard errors 20 mm probe 2 0kgf at any point of top cover 20 mm probe 15 0kgf at top cover edges only Figure 3 Mounting Dimensions for standard models 008 H 3 951 1 910 835 5 010 0 230 p 3534z 050 I 263 6 324 010 eO A Q 9 Oo WI o i 9 BREATHER HOLE E DO NOT COVER OR SEAL 2 750 010 D 8 3 567 2X M3 X 0 5 6H MOUNTING HOLES BOTH SIDES Y 12 MIN FULL THREAD 551 G 138 003 012 X 90 0 268 008 Om i 2 i BOTH SIDES 4X M3 X 0 5 6H MOUNTING HOLES BOTH SIDES V 10 MIN FULL THREAD N 6 138 003 7 012 X 90 BASE CJ 2 430 iR 160 ii MOMENTUS THIN SATA PRODUCT MA
21. e interference to radio and television reception This equipment is designed to provide reasonable protection against such interference in a residential installation However there is no guarantee that interference will not occur in a particular installation If this equipment does cause interference to radio or television which can be determined by turning the equipment on and off you are encouraged to try one or more of the following corrective measures m Reorient the receiving antenna Move the device to one side or the other of the radio or TV Move the device farther away from the radio or TV Plug the computer into a different outlet so that the receiver and computer are on different branch outlets If necessary you should consult your dealer or an experienced radio television technician for additional suggestions You may find helpful the following booklet prepared by the Federal Communications Commission How to Identify and Resolve Radio Television Interference Problems This booklet is available from the Superintendent of Documents U S Government Printing Office Washington DC 20402 Refer to publication number 004 000 00345 4 2 13 ENVIRONMENTAL PROTECTION Seagate designs its products to meet environmental protection requirements worldwide including regulations restricting certain chemical substances 2 13 1 European Union Restriction of Hazardous Substances RoHS Directive The European Union Restriction of Hazardous Subst
22. evers for steady state idle and active seeks modes of operation Table6 Drive A weighted Sound Power Levels SWL Idle Performance Seek 2 3 bels typ 2 4 bels typ 2 5 bels max 2 6 bels max 1 During periods of drive idle some offline activity may occur according to the S M A R T specification which may increase acoustic and power to operational levels 2 9 1 Test for prominent discrete tones PDTs Seagate follows the ECMA 74 standards for measurement and identification of PDTs An exception to this process is the use of the absolute threshold of hearing Seagate uses the lower limit for the threshold curve to discern tone audibility and to compensate for the inaudible components of sound prior to computation of tone ratios according to Annex D of the ECMA 74 standards Defined as the median curve given by ISO 389 7 Tf curve minus 104 at all frequencies MOMENTUS THIN SATA PRODUCT MANUAL REV B 10 DRIVE SPECIFICATIONS 2 10 ELECTROMAGNETIC IMMUNITY When properly installed in a representative host system the drive operates without errors or degradation in performance when subjected to the radio frequency RF environment as defined in Table 7 Table 7 Radio Frequency Environments Test DescHpioh Performance Reference Level Standard Electrostatic discharge Contact HCP VCP 4 kV Air 8 kV EN 61000 4 2 95 EN 61000 4 3 96 ENV 50204 95 80 to 1GHz 3 V m Radiated RF immunity 80
23. he case of backplane blindmate connector only In this case the mating sequences are the ground pins P4 and P12 the pre charge power pins and the other ground pins the signal pins and the rest of the power pins 3 There are three power pins for each voltage One pin from each voltage is used for pre charge when installed in a blind mate backplane configuration 4 All used voltage pins V must be terminated MOMENTUS THIN SATA PRODUCT MANUAL REV B 17 4 9 SUPPORTED ATA COMMANDS SERIAL ATA SATA INTERFACE Table 9 lists Serial ATA standard commands that the drive supports For a detailed description of the ATA commands refer to the Serial ATA International Organization Serial ATA Revision 3 2 Refer to www sata io org Refer to S M A R T commands on page 25 for details and subcommands used in the S M A R T implementation Table 9 Supported ATA commands ATA standard commands names Command code in hex Device Configuration Restore B1h COh Device Configuration Freeze Lock 1 1 Device Configuration Identify B1h C2h Device Configuration Set B1h C3h Download Microcode 92h Execute Device Diagnostics 90h Flush Cache E7h Flush Cache Extended EAh Identify Device ECh Initialize Device Parameters 91h Read Buffer E4h Read DMA 08 Read DMA Extended 25h Read DMA without Retries C9h Read Long with Retries 22h Read Long without Retries 23h Rea
24. host bus addresses A host adapter that emulates a master slave environment manages two sets of shadow registers This is not a typical Serial ATA environment The Serial ATA host adapter and drive share the function of emulating parallel ATA device behavior to provide backward compatibility with existing host systems and software The Command and Control Block registers PIO and DMA data transfers resets and interrupts are all emulated The Serial ATA host adapter contains a set of registers that shadow the contents of the traditional device registers referred to as the Shadow Register Block All Serial ATA devices behave like Device 0 devices For additional information about how Serial ATA emulates parallel ATA refer to the Serial ATA International Organization Serial ATA Revision 3 2 The specification can be downloaded from www serialata org MOMENTUS THIN SATA PRODUCT MANUAL REV B 2 2 0 DRIVE SPECIFICATIONS Unless otherwise noted all specifications are measured under ambient conditions at 25 C and nominal power For convenience the phrases the drive and this drive are used throughout this manual to indicate the following drive models The specification summaries listed in the following tables are for quick reference For details on specification measurement or definition refer to the appropriate section of this manual Table 1 Drive Specifications Summary Drive Specification ST500LM021 ST320LM010 Formatted capacity
25. ilable for data storage Actual quantities will vary based on various factors including file size file format features and application software Actual data rates may vary depending on operating environment and other factors The export or re export of hardware or software containing encryption may be regulated by the U S Department of Commerce Bureau of Industry and Security for more information visit www bis doc gov and controlled for import and use outside of the U S Seagate reserves the right to change without notice product offerings or specifications 1 0 2 0 3 0 4 0 CONTENTS SEAGATE TECHNOLOGY SUPPORT SERVICES 2 000 cece eee eee n nnn 1 INTRODUCTION 25 lxi Pieris deed Hem EV eed E ARE ER 2 1 1 ABOUT THE SERIAL ATA INTERFACE 2 DRIVE SPECIFICATIONS eim p ee Ga Re ee Ad A e ox bee s 3 2 1 FORMATTED CAPACITY sh ex aia tar ees wee ewe ev eon e EEA 4 2 1 1 BA MOOG me rasen ni oa Ar Mine 5 2 2 PHYSICAL ORGANIZATION ua MR QE EE PARADE PA a QE eds 5 2 3 RECORDING AND INTERFACE 5 24 PHYSICAL CHARACTERISTICS sedo Re ER RUE MR RI ROCA eden 5 2 5 SEEK TIMES rota ced Etsi REC RR e BUD nae dere 6 2 6 START STOP TIMES s tape Lon aA uet etes che ctu o afuera An 6 2 7 POWER
26. imum multiword DMA transfer cycle time per word 120 ns 00784 66 Recommended multiword DMA transfer cycle time per word 120 ns 00784 67 Minimum PIO cycle time without IORDY flow control 240 ns 00784 68 Minimum PIO cycle time with IORDY flow control 120 ns 00784 69 74 ATA reserved 0000 75 Queue depth 001Fy 76 Serial ATA capabilities 0D06 77 ATA reserved 0000 78 Serial ATA features supported 00484 79 Serial ATA features enabled 00484 80 Major version number 01 0 81 Minor version number 0029 82 Command sets supported 746By 83 Command sets supported 7D69 84 Command sets support extension 61E3y 85 Command sets enabled 7469 86 Command sets enabled 49 87 Command sets enable extension 61E3y 88 Ultra DMA support and current mode see note following this table Xx7Fy 89 Security erase time 90 Enhanced security erase time 91 Current APM values 8080 92 Master password revision code FFFE 93 Hardware reset value see description following this table 94 Auto acoustic management setting 95 Stream Min Request Size 0000 96 Streaming Transfer Time DMA 0000 97 Streaming Access Latency DMA and PIO 0000 98 99 Streaming Performance Granularity 0000 MOMENTUS THIN SATA PRODUCT MANUAL REV B 21 SERIAL ATA SATA INTERFACE Table 10 Identify Device command Word Description Value Total number of user addressable LBA sectors available 100 103 see Section 3 2 for related infor
27. ing 16 26 noise 8 nominal power 6 nonoperating shock 9 nonoperating vibration 10 nonrecoverable read errors 11 O operating shock 9 operating vibration 10 P physical characteristics 5 Physical organization 5 point to point 2 15 power consumption 6 power dissipation 7 power management modes 8 power modes 8 power specifications 6 precautions 15 printed circuit board 15 programmable power management 8 prominent discrete tone 10 Q quick reference 3 R Radiated RF immunity 11 radio and television interference 13 radio frequency RF 11 random track location 6 Read Buffer 18 Read DMA 18 Read DMA Extended 18 Read DMA without Retries 18 read errors 11 Read Long with Retries 18 Read Long without Retries 18 Read Multiple 18 Read Multiple Extended 18 Read Native Max Address 18 Read Native Max Address Extended 18 Read Sectors 18 Read Sectors Extended 18 Read Sectors without Retries 18 Read Verify Sectors 18 Read Verify Sectors Extended 18 Read Verify Sectors without Retries 18 read write power 6 recording density 5 recording method 5 recording technology 5 MOMENTUS THIN SATA PRODUCT MANUAL REV B INDEX reliability 11 Retries 18 RMS read write current 8 RoHS 13 14 RRL 12 S S M A R T 19 S M A R T implementation 18 safety certification 12 SATA ports 2 screws 16 Seagate Technology Support Services 1 sectors 5 Security Disable Password 19 Security Erase Prepa
28. ing system views the two devices as if they were both masters on two separate ports Both drives behave as if they are Device 0 master devices 3 2 1 Serial ATA Cables and Connectors The Serial ATA interface cable consists of four conductors in two differential pairs plus three ground connections The cable size may be 30 to 26 AWG with a maximum length of one meter 39 37 in Refer to Table 8 for connector pin definitions Either end of the SATA signal cable can be attached to the drive or host For direct backplane connection the drive connectors are inserted directly into the host receptacle The drive and the host receptacle incorporate features that enable the direct connection to be hot pluggable and blind mateable For installations which require cables you can connect the drive as shown in Figure 2 Figure 2 Attaching SATA Cabling SS connector Power connector Power cable Each cable is keyed to ensure correct orientation Momentus Thin SATA drives support latching SATA connectors MOMENTUS THIN SATA PRODUCT MANUAL REV B 15 CONFIGURING AND MOUNTING THE DRIVE 3 3 DRIVE MOUNTING You can mount the drive in any orientation using four screws in the side mounting holes or four screws in the bottom mounting holes Refer to Figure 3 for drive mounting dimensions Follow these important mounting precautions when mounting the drive m Allow a minimum clearance of 0 030 in 0 76 mm around the entire perimeter of the driv
29. ives Ambient temperature is defined as the temperature of the environment immediately surrounding the drive Above 1000 feet 305 meters the maximum temperature is derated linearly by 1 C every 1000 feet Table 5 Environmental specifications Parameters Operating Non Operating Ambient temperature 0 to 60 C 32 to 140 F 40 to 70 C 58 to 158 F 20 C per hour 68 F per hour max 35 C per hour 95 F per hour max Temperature gradient without condensation without condensation Humidit 5 to 95 non condensing 5 to 95 non condensing y 30 per hour 3096 per hour Wet bulb 37 7 C 99 8 F max 40 C 104 F max Altitude 304 8m to 3048m 304 8m to 12 192m 1000ft to 10 000ft 1000ft to 40 000ft The recommended storage period 1 year under controlled conditions of 34 C 90 RH or less 90 days in uncontrolled storage conditions 2 8 1 Shock All shock specifications assume that the drive is mounted securely with the input shock applied at the drive mounting screws Shock may be applied in the X Y or Z axis 2 8 1 1 Operating shock These drives comply with the performance levels specified in this document when subjected to a maximum operating shock of 400 Gs based on half sine shock pulses of 2ms Shocks should not be repeated more than one time per axis 2 8 1 2 Nonoperating shock The nonoperating shock level that the drive can experience without incurring physical damage or degradation
30. mation ST500LM021 976 773 168 These words are required for drives that support the 48 bit addressing ST320LM010 625 142 448 feature Maximum value 0000FFFFFFFFFFFFh 108 111 The mandatory value of the world wide name WWN for the drive NOTE This field is valid if word 84 bit 8 is set to 1 indicating 64 bit WWN support Each drive will have a unique value 112 118 ATA reserved 0000 119 Free Fall Protection support bit 5 B ad EA aan M bam d 120 Free Fall Protection enable disable bit 5 121 127 ATA reserved 0000 128 Security status 0021 129 159 Seagate reserved 160 221 ATA reserved 0000 222 Transport major version number 101Fy 223 254 ATA reserved 0000 255 Integrity word See the bit descriptions below for words 63 88 and 93 of the Identify Drive data on next page MOMENTUS THIN SATA PRODUCT MANUAL REV B 22 Table 11 Bit Descriptions Description if bit is set to 1 Bit Word 63 0 Multiword DMA mode 0 is supported 1 Multiword DMA mode 1 is supported 2 Multiword DMA mode 2 is supported 8 Multiword DMA mode 0 is currently active 9 Multiword DMA mode 1 is currently active 10 Multiword DMA mode 2 is currently active Bit Word 88 0 Ultra DMA mode 0 is supported 1 Ultra DMA mode 1 is supported 2 Ultra DMA mode 2 is supported 3 Ultra DMA mode 3 is supported 4 Ultra DMA mode 4 i
31. n 15 3 1 HANDLING AND STATIC DISCHARGE PRECAUTIONS llle 15 3 2 CONFIGURING THE err rre 15 3 2 1 Serial ATA Cables and Connectors 0 0 cece eee ee 15 3 3 DRIVE MOUNTING 2 12 aidan alee Rela ede ee Sy Gada RR PA Ec ae 16 SERIAL ATA SATA INTERFACE eee cee eee eee eens 17 4 1 HOT PLUG COMPATIBILITY ccc ccc eee s 17 4 2 SERIAL ATA DEVICE PLUG CONNECTOR PIN 8 17 4 3 SUPPORTED ATA COMMANDS 0 000 cece hers 18 4 3 1 Identify Device command 0 0 cea 20 4 3 2 Set Features command 0 000 ccc teen eens 24 4 3 3 SMART commands 2 xia eate EECDRR Er e a 25 MOMENTUS THIN SATA PRODUCT MANUAL REV B FIGURE 1 TYPICAL 5V STARTUP AND OPERATION CURRENT PROFILE FIGURE 2 ATTACHING SATA FIGURE 3 MOUNTING DIMENSIONS FOR STANDARD MODELS MOMENTUS THIN SATA PRODUCT MANUAL REV B FIGURES Seagate Technology Support Services For information regarding online support and services visit http www seagate com about contact us technical support Available services include Presales amp Technical support e Global Support Services telephone numbers amp business hours Authorized Service Centers For information regarding Warranty Support visit http www seagate com support warranty and replacements For information regarding data recovery
32. onal Shock 1000 Gs at 1 ms max Vibration operating Pace ae Vibration nonoperating 5 500 Hz 5 0 Gs Nonrecoverable read errors 1 per 1014 bits read To determine the warranty for a specific drive use a web browser to access the fol lowing web page http www seagate com support warranty and replacements Warranty From this page click on the Verify Your Warranty link You will be asked to pro vide the drive serial number model number or part number and country of pur chase The system will display the warranty information for your drive Load unload cycles 600 000 at 25 C 50 rel humidity Supports Hotplug operation per the Serial ATA Revision 3 2 specification TER 1 One GB equals one billion bytes when referring to hard drive capacity Accessible capacity may vary depending on operating environment and formatting FORMATTED CAPACITY CE Formatted Capacity Guaranteed Sectors Bytes per Sector 500GB model 500 GB 976 773 168 512 logical 4096 physical 320GB model 320 GB 625 142 448 1 One GB equals one billion bytes when referring to hard drive capacity Accessible capacity may vary depending on operating environment and formatting MOMENTUS THIN SATA PRODUCT MANUAL REV B 4 DRIVE SPECIFICATIONS 2 1 1 LBA mode When addressing these drives in LBA mode all blocks sectors are consecutively numbered from 0 to n 7 where n is the number of guaranteed sectors as defined above Refer
33. re 19 Security Erase Unit 19 Security Freeze Lock 19 Security Set Password 19 Security Unlock 19 Seek 18 seek mode 6 Seek time 6 seek time 6 Self refresh low power 8 Serial ATA SATA interface 17 Set Features 18 Set Max Address 18 Set Multiple Mode 18 shock 9 single track seeks 6 Sleep 19 sleep 7 sleep mode 8 spindle speed 5 spinup DC power 7 spinup power 6 Standby 19 standby 7 Standby Immediate 19 standby mode 6 8 standby timer 8 Start stop times 6 static discharge 15 subassembly 13 surge immunity 11 T temperature 6 timers Idle and Standby 8 track density 5 Track to track seek time 6 Transport major version number 22 27 UL60950 1 12 vibration 10 voltage dips interrupts 11 voltage tolerance 8 W warranty 11 weight 5 width 5 Write Buffer 19 Write DMA 19 Write DMA Extended 19 Write Long with Retries 19 Write Long without Retries 19 Write Multiple 19 Write Sectors 19 MOMENTUS THIN SATA PRODUCT MANUAL REV B INDEX 28 e Seagate Seagate Technology LLC AMERICAS Seagate Technology LLC 10200 South De Anza Boulevard Cupertino California 95014 United States 408 658 1000 ASIA PACIFIC Seagate Singapore International Headquarters Pte Ltd 7000 Ang Mo Kio Avenue 5 Singapore 569877 65 6485 3888 EUROPE MIDDLE EAST AND AFRICA Seagate Technology SAS 16 18 rue du D me 92100 Boulogne Billancourt France 33 1 4186 10 00 Publication Number 1007379
34. s supported 5 Ultra DMA mode 5 is supported 6 Ultra DMA mode 6 is supported 8 Ultra DMA mode 0 is currently active 9 Ultra DMA mode 1 is currently active 10 Ultra DMA mode 2 is currently active 11 Ultra DMA mode 3 is currently active 12 Ultra DMA mode 4 is currently active 13 Ultra DMA mode 5 is currently active 14 Ultra DMA mode 6 is currently active Bit Word 93 13 1 80 conductor cable detected CBLID above VIH 0 40 conductor cable detected CBLID below VIL MOMENTUS THIN SATA PRODUCT MANUAL REV B SERIAL ATA SATA INTERFACE 23 SERIAL ATA SATA INTERFACE 4 3 2 Set Features command This command controls the implementation of various features that the drive supports When the drive receives this command it sets BSY checks the contents of the Features register clears BSY and generates an interrupt If the value in the register does not represent a feature that the drive supports the command is aborted Power on default has the read look ahead and write caching features enabled The acceptable values for the Features register are defined as follows Table 12 Set Features command values 024 Enable write cache default 034 Set transfer mode based on value in Sector Count register Sector Count register values 00 Set PIO mode to default PIO mode 2 014 Set PIO mode to default and disable IORDY PIO mode 2 08 4 PIO mode 0 09 PIO mode 1 OA PIO mode 2 0 PIO mode 3 0C
35. services visit http www seagate com services software data recovery services For Seagate OEM and Distribution partner portal visit http www seagate com partners For Seagate reseller portal visit http www seagate com partners my spp dashboard Momentus Thin SATA Product Manual Rev B 1 1 0 INTRODUCTION This manual describes the functional mechanical and interface specifications for the following Seagate Momentus Thin model drives Standard models 1KJ152 ST320LM010 1KJ15C These drives provide the following key features 7200 RPM spindle speed 32MB buffer Quiet operation Fluid Dynamic Bearing FDB motor High instantaneous burst data transfer rates up to 6Gb s Perpendicular recording technology State of the art cache and on the fly error correction algorithms Native Command Queuing NCQ with command ordering Full track multiple sector transfer capability without local processor intervention 1000 Gs nonoperating shock and 400 Gs of operating shock SeaTools diagnostic software performs a drive self test that eliminates unnecessary drive returns m The 3D Defense System which includes Drive Defense Data Defense and Diagnostic Defense offers the industry s most comprehensive protection for disk drives m Support for S M A R T drive monitoring and reporting Support for Read Multiple and Write Multiple commands m Worldwide Name WWN capability uniq
36. sive environment 14 CSA60950 1 12 D DC power 6 density 5 Device Configuration Freeze Lock 18 Device Configuration Restore 18 Device Configuration Set 18 Diagnostics 18 dimensions 16 dissipation 7 Download Microcode 18 E electrical fast transient 11 Electromagnetic Compatibility EMC 12 Electromagnetic Compatibility control Regulation 12 Electromagnetic Compatibility Directive 2004 108 EC 12 electromagnetic immunity 11 electrostatic discharge ESD 11 15 EN 55022 Class B 12 EN 55024 12 EN60950 12 enclosures 13 environmental specifications 9 MOMENTUS THIN SATA PRODUCT MANUAL REV B INDEX errors 11 ESD 15 EU 12 EU RoHS directive 13 European Union EU requirements 12 evice Configuration Identify 18 Execute Device Diagnostics 18 F FCC verification 13 features 2 Flush Cache 18 Flush Cache Extended 18 formatted capacity 4 Freeze Lock 18 G Gs acceleration of gravity 10 guaranteed sectors 5 H handling precautions 15 height 5 I O data transfer rate 5 Identify 18 Identify Device 18 Identify Device command 20 Idle 19 Idle Immediate 19 idle mode 6 8 idle performance 7 Information Technology Equipment ITE 12 Initialize Device Parameters 18 input noise ripple 8 interface 17 interference 13 ITE 12 K KCC 12 Korean Communications Commission 12 Korean Radio Research Laboratory RRL 12 L LBA mode 5 length 5 master slave 2 Max Address 18 Microcode 18 mount
37. standby Immediate command If the host has set the standby timer the drive can also enter standby mode automatically after the drive has been inactive for a specifiable length of time The standby timer delay is established using a standby or idle command In standby mode the drive buffer is enabled the heads are parked and the spindle is at rest The drive accepts all commands and returns to active mode any time disk access is necessary m Sleep mode The drive enters sleep mode after receiving a sleep command from the host In sleep mode the drive buffer is disabled the heads are parked and the spindle is at rest The drive leaves sleep mode after it receives a hard reset or soft reset from the host After receiving a reset the drive exits sleep mode and enters standby mode with all current translation parameters intact m Idle and standby timers Each time the drive performs an active function read write or seek the standby timer is reinitialized and begins counting down from its specified delay times to zero If the standby timer reaches zero before any drive activity is required the drive makes a transition to standby mode In both Idle and standby mode the drive accepts all commands and returns to active mode when disk access is necessary MOMENTUS THIN SATA PRODUCT MANUAL REV B 8 DRIVE SPECIFICATIONS 2 8 ENVIRONMENTAL SPECIFICATIONS This section provides the temperature humidity shock and vibration specifications for Momentus dr
38. tallation the drive may be exposed to potential handling and electrostatic discharge ESD hazards Observe the following standard handling and static discharge precautions Keep the drive in the electrostatic discharge ESD bag until you are ready for installation to limit the drive s exposure to ESD Before handling the drive put on a grounded wrist strap or ground yourself frequently by touching the metal chassis of a computer that is plugged into a grounded outlet Wear a grounded wrist strap throughout the entire installation procedure Handle the drive by its edges or frame only The drive is extremely fragile handle it with care Do not press down on the drive top cover Always rest the drive on a padded antistatic surface until you mount it in the computer Do not touch the connector pins or the printed circuit board Do not remove the factory installed labels from the drive or cover them with additional labels Removal voids the warranty Some factory installed labels contain information needed to service the drive Other labels are used to seal out dirt and contamination CAUTION 3 2 CONFIGURING THE DRIVE Each drive on the Serial ATA interface connects in a point to point configuration with the Serial ATA host adapter There is no master slave relationship because each drive is considered a master in a point to point relationships If two drives are attached on one Serial ATA host adapter the host operat
39. to Configuring and Mounting the Drive on page 15 words 60 61 and 100 103 for additional information about 48 bit addressing support of drives with capacities over 137 GB 2 2 PHYSICAL ORGANIZATION Drive model Read write heads Number of discs ST500LM021 2 1 ST320LM010 2 3 RECORDING AND INTERFACE TECHNOLOGY Interface Serial ATA SATA Recording method Perpendicular Recording density 1875 Kb in Track density 375 ktracks in avg Areal density 670 Gb in avg Spindle speed 7200 RPM 0 2 Sustained data transfer rate 135 MB s max I O data transfer rate 600 MB s max 2 4 PHYSICAL CHARACTERISTICS Height 6 8 0 2 mm 0 268 008 in Width 69 85 0 25 mm 2 750 0 010 in All models Length 100 35 0 20 0 25 mm 3 951 0 008 0 010 in Typical weight lt 95 g 0 209 Ib Cache buffer 32 MB 32 384 KB MOMENTUS THIN SATA PRODUCT MANUAL REV B 5 DRIVE SPECIFICATIONS 2 5 SEEK TIME Seek measurements are taken with nominal power at 25 C ambient temperature All times are measured using drive diagnostics The specifications in the table below are defined as follows m Track to track seek time is an average of all possible single track seeks in both directions m Average seek time is a true statistical random average of at least 5000 measurements of seeks between random tracks less overhead Table2 Typical seek times Typical seek times ms Rea
40. uely identifies the drive 1 1 ABOUT THE SERIAL ATA INTERFACE The Serial ATA interface provides several advantages over the traditional parallel ATA interface The primary advantages include m Easy installation and configuration with true plug and play connectivity It is not necessary to set any jumpers or other configuration options m Thinner and more flexible cabling for improved enclosure airflow and ease of installation m Scalability to higher performance levels In addition Serial ATA makes the transition from parallel ATA easy by providing legacy software support Serial ATA was designed to allow you to install a Serial ATA host adapter and Serial ATA disk drive in your current system and expect all of your existing applications to work as normal The Serial ATA interface connects each disk drive in a point to point configuration with the Serial ATA host adapter There is no master slave relationship with Serial ATA devices like there is with parallel ATA If two drives are attached on one Serial ATA host adapter the host operating system views the two devices as if they were both masters on two separate ports This essentially means both drives behave as if they are Device 0 master devices The host adapter may optionally emulate a master slave environment to host software where two devices on separate Serial ATA ports are represented to host software as a Device 0 master and Device 1 slave accessed at the same set of
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