Apacer Technology AP-SRFD255AXXXXR-G User's Manual
Contents
1. Temperature 40 C 100 C for Storage Humidity 5 95 R H non condensing A Sine wave 5 55 5Hz X Y Z axes Vibration B Random 10 2000Hz 16 3g X Y Z 3 axes A Acceleration 1 500G 0 5ms Shock Operating B Peak acceleration 50G 11ms 14 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best 5 Physical Characteristics 5 1 Dimension Unit mm Tolerance 0 2 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best 6 Product Ordering Information 6 1 Product Code Designations H SRFD 25 5 A XXXX R G Blank Standard Device Housing OEM Product Type SATA RAID Flash Drive Apacer Product Code 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best Revision History Revision Description Date 0 1 Initial release Preliminary specification Jan 07 2008 0 2 Updated features and function modes Apr 25 2008 17 2008 Apacer Technology Inc Rev 0 2 Preliminary Taiwan Headquarters U S A Japan Europe China India 2008 Apacer Technology Inc Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best Global Presence Apacer Technology Inc OF 100 Sec 1 Hsin Tai Wu Rd Hsichih 221 Tai2. stay on line In addition that HDD s LED will show the Error State In the rare case if there is another sector 10 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best recovery is needed while the first one is not complete then the new request is converted to a Disk Rebuild Request 2 9 2 Disk Rebuild First of all the Disk Rebuild is really a Physical Partition Rebuild Only then the Physical Partition spans the entire Physical Disk the entire Physical Disk is rebuilt Disk Rebuild is a procedure to copy all of the contents from the Good Physical Partition to the Broken or New Physical Partition This is typically initiated on one of the following three events gt Power Up Scan if anything is pending gt Physical Disk insertion Assume the inserted Physical Disk is good and ready to use gt Another Sector Recovery or Disk Rebuild completes During Disk Rebuild the Physical Partition is not read from but all writes are propagated to the drive 2 9 3 Disk Verify In addition to the Sector Recovery and Disk Rebuild the Storage Processor also implements a Data Verification scheme For sector Recovery the Data Verification performed by Read Verify Commands is automatically and always performed to make sure the data is written correctly In case of Disk Rebuild this Data Verification is optional selectable by GPI 1 The firmware will r
3. EE E Ea ES 6 UE ER EE 7 Bi Te saidicecsdcnnsinatinatvvassensccccsseausonsoninssssacassndensianeessanevevatndatertetsesacsoasbidesinesssansnssds 8 SE RE 8 22 Intelligent SATA RAID Processor Ui AAA 8 DiS SAW EE 8 ZA ATCHUECHIIC iis cided ah iea aan ea EEE EA EES EE 8 DSPs PPM e 8 2 6 VAA AA 9 227 MOGES AA AAA WAUA AAA 9 2 Fad RER E Mode si aa N E E E a a a AS 9 2 7 2 Safe RAID 1 Mode 9 XS RAID NEE 10 2 9 Sector Recovery and Disk Rebuild siisii IAA WAA WAUA WANUKIA KAKA KENA EEOSE EEEE SKEE 10 BE DECLON ROCO VEI EE 10 29 2 Disk Rebuild isror estas ccd ieena aT aa E edad OS EA EERE 11 2 9 3 Disk Verify iinei aas E deta devez ES EEA EEE AEDE a EEEa E a E a E EE ethers Il 3 Pin ASSIGNMENTS AWIKA kaaa isa aa 12 4 Environmental Specification sssssssssnsnnnsnnnnnnnnnnunnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nna 14 5 Physical Character AA EES 15 Sch KEE ere eege aan out baits tn aioe 15 6 Product Ordering Information wwwwwwmwmamana nunu ananuna wanakana awana nzu zunaazana nakaa kakaa 16 6 1 Produ Code Desigtiations ssiis c sccastecesseiscacesssaieticeseayenieeatateedesiad en ducavad stevestaysneveatstet EE Ee RNAt aiae 16 3 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best 1 General Description The Apacer 2 5 SRFD is the first SATA RAID Flash Drive introduced to the market SRFD increases data reliability and security by utiliz
4. Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best RoHS Compliant Serial ATA RAID Flash Drive Specifications for SRFD April 25 2008 Preliminary Apacer Technology Inc Apa 9 F No 100 Hsin Tai Wu Rd Hsichih Taipei Hsien 221 Taiwan Tel 886 2 2696 1666 Fax 886 2 2696 1668 Access the best www apacer com 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive AP SRFD255AXXXXR G Apacer Access the best Features Interface Serial ATA 2 5 Gen 2 SATA II 3 0 Gbps ATA command set compatible e Performance Burst read write 300 MB sec e Capacities 1 GB for each slot with Ultra DMA mode support e Expansion 50 pin CF slot x 2 e Mode FAST RAID 0 SAFE RAID 1 OS Support Microsoft Windows 2000 and XP Auto Standby and Sleep modes supported Temperature ranges 0 C 70 C for operation 40 C 100 C for storage Supply voltage 50V 5 Form factor 2 5 inch 7 pin SATA male connector 15 pin SATA power connector Low power consumption 510 mA typical RoHS compliant 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best Table of Contents 1 General Re e Uu E 4 1 1 Functional Block Diagram eecsnenonenanarnononi anuni ahan NKA NEES ENEE 4 Ee E 9 LIMA EE 6 LIL Definition reciente a EEEE EEE E EEE EEE EE EEE PER E
5. a combination of two physical partitions where the data is mirrored among them Provides fault tolerance from disk errors and single disk failure Increased read performance occurs when using a multi threaded operating system that supports split seeks very small performance reduction when writing Array continues to operate so long as at least one drive is functioning 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best The RAID Processor supports a definition of Safe RAID 1 set The HBA Host Bus Adapter does not need to know anything about the physical arrangement of the data To the HBA the virtualized drive behind RAID Processor is a normal drive that just happens to be safer fault tolerant All error handling and Data rebuild is managed by the RAID Processor The two physical partitions used for mirroring must reside on two different physical disks as there is no benefit of mirroring the data on the same drive The advantage of mirroring is essentially safeguarding the data in case of a single physical drive failure For a read operation the RAID Processor decides which physical partition to read from and for write the data is written to both drivers Note There is no benefit of performance due to mirroring Often the performance may suffer slightly as the data will be transferred to the least common denominator of the two physical drives The two physical partition
6. al Color Indication Description D1 Red SATA Link SATA Link ready Host D2 Green Read Write Host device Access active D3 Yellow LED_DO_N1 CF 1 See table as below D4 Green LED_DO_NO D5 Yellow LED_D1_N1 CF 2 See table as below D6 Green LED D1 NO Table 1 3 CF 1 and CF 2 LED Description LED_Dx_N1 LED Dr NO p D3 D5 D4 D6 Device Unplugged No Power Blink Blink Device Plugged Idle On Off Device Plugged Activity On Flash On Disk Rebuild A Physical Partition is being Rebuilt Safe Blink On Mode RAID 1 Disk Rebuild Verify A Physical Partition is being Verified On Flash ON Safe Mode RAID 1 Will appear as On Error State Incorrect Serial Number Blink Blink 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best 2 Functions 2 1 Overview Compatible with SATA Gen1 and Gen host controllers OS independent Driverless Auto Configuration FAST RAID 0 SAFE RAID 1 support Embedded fast RAID Processor Virtualization engine to simplify and improve utilization of storage devices Ultra fast 3Gbps host and device port capability VVVVVV 2 2 Intelligent SATA RAID Processor Unit Automatic Failover in RAID 1 mode Automatic Rebuild in RAID 1 mode Automatic RAID mode configuration 100GB hr Rebuild speed without Host CPU loading High performance reliability and simplicity with hardware RAID 0 1 options Virtu
7. alized multiple storage devices into one or many storage units e g multi drive spanning drive partitioning High speed native SATA II connection to host and device Device to device s copy to off load host during rebuild LED drivers for status reporting Drive Splitting for multi RAID partitions on a single volume with PM Aware Host ATA 1x2 Port Multiplier Functionality 1 5Gpbs or 3Gpbs link rate with auto negotiation Supports hot plug drive roaming Supports host control of hard disk drive staggered spin up Host side NCQ support VVVVVV O vvvv 2 3 2 4 Architecture Features independent 8 KByte FIFO per Device Serial ATA channel for reads and writes High Performance data movement between all SATA Generation 2 ports Greater than 110MBps sustained reads in RAID 1 mode limited by drives Support store and forwarding 2 5 Applications PC DVR PVR Video Editing Systems eSATA Storage Target Host VVVVV P VVVV P VYVVY 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best 2 6 Virtualization Virtualization is a mechanism where the HBA can have an alternate view of the physical drives The RAID Processor allows various access strategies to the connected Hard Disks and may be configured to represent n drives as m drives to the user This provides the user with a simple way of partitioning storage resources according to use For example the processor co
8. e The configuration of each node uses a combination of the Configuration pins and the Pushbutton Reset pin 1234 Table 1 1 Mode Configuration Configuration Pin 1 2 3 4 Mode Example 0100 0 1 0 0 RAID 0 F 1 1100 1 1 0 0 RAID 1 1 3 1 Definition The following method can be used to define the configurations Configuration pins set to FAST RAID 0 SAFE RAID 1 A While the system is powered up l Any configuration change is ignored Il Physical drive change rules no drivers accepted in SAFE RAID 1 mode a single driver change will be accepted with normal driver rules larger or equal to existing drive B Upon power up but with no pushbutton reset press l Any configuration change is ignored Il Physical drive change rules no drivers accepted in SAFE RAID 1 mode a single driver change will be accepted with normal driver rules larger or equal to existing drive which must be present C Upon power up and momentary pushbutton reset pressed l Only new configuration changes are explicitly accepted if possible and all new drives are explicitly accepted if there is a new configuration 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive AP SRFD255AXXXXR G 1 4 LED Mode The following table shows LED Mode status and descriptions Table 1 2 LED Status Apacer Access the best H D Sign
9. ead the status of this GPI pin and if 1 it will perform a Verification cycle Note The drive is fully available for reads and writes during the data verification process 11 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive AP SRFD255AXXXXR G 3 Pin Assignments Signal Segment Key Signal Segment Apacer Access the best Power Segment Pin P1 Power Segment Key Table 3 1 Signal segment Pin Signal Description EN Ground ER RxP Serial Data Receiver ER RxN S4 Ground S5 TxN Serial Data Transmitter S6 TxP S7 Ground 12 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive AP SRFD255AXXXXR G Apacer Access the best Table 3 2 Power segment Pin Signal Description P1 Not Used 3 3V P2 Not Used 3 3V P3 Not Used P4 Ground P5 Ground P6 Ground P7 5V Pre charge P8 5V P9 DV P10 Ground P11 Ground P12 Ground P13 Not Used P14 Not Used 12V P15 Not Used 12V 13 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best 4 Environmental Specification The environmental specification follows the US Military Standard MIL STD 801F Table 4 1 Environmental Specifications Plan 0 C 70 C for operation
10. ing an SATA interface and saving data into two CompactFlash cards It offers capacity expansion ultimate performance reliability and simplicity with a variety of hardware RAID modes 1 1 Functional Block Diagram The Functional Block SATA RAID Flash Drive SRFD contains a SATA RAID Processor Unit two CF media slots with PATA interfaces and a SATA interface to the Host PATA Interface CF Media SATA RAID SATA Interface Processor Unit PATA Interface CF Media Figure 1 1 Functional block diagram 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best 1 2 Appearance This section describes the appearance of the SRFD It contains the LED indication mode configurations expansion slots and interfaces Reset Button RAID Mode Configuration Pins Apacer SATA RAID Flash Drive CF1 Link LED D4 CF1 Activity LED D3 CF2 Link LED D6 CF2 Activity LED D5 Apacer CompactFlash CF Slot 1 SATA connector RAID Mode vue Configuration Wi 000000 AMMD UI Table wawapacercon CC RE RoHS Apacer industrial CF Slot 2 2008 Apacer Technology Inc Rev 0 2 Preliminary Serial ATA Flash Drive Apacer AP SRFD255AXXXXR G Access the best 1 3 Mode Configuration Apacer SRFD supports 4 static pins that can be used to program a normal operating stat
11. pei Hsien Taiwan R O C Tel 886 2 2696 1666 Fax 886 2 2696 1668 amtsales apacer com Apacer Memory America Inc 386 Fairview Way Suite102 Milpitas CA 95035 Tel 1 408 586 1291 Fax 1 408 935 9611 sa apacerus com Apacer Technology Corp 5F Matsura Bldg Shiba Minato Ku Tokyo 105 0014 Japan Tel 81 3 5419 2668 Fax 81 3 5419 0018 jpservices apacer com Apacer Technology B V Europalaan 89 5232 BC S Hertogenbosch The Netherlands Tel 31 73 645 9620 Fax 31 73 645 9629 sales apacer nl Apacer Electronic Shanghai Co Ltd 1301 No 251 Xiaomuqiao Road Shanghai 200032 China Tel 86 21 6226 4722 Fax 86 21 5206 6939 services apacer com cn Apacer Technologies Pvt Ltd 143 1st Floor Raheja Arcade 5th Block Kormangala Industrial Layout Bangalore 560095 India Tel 91 80 4152 9061 sales india apacer com 18 Rev 0 2 Preliminary
12. s used for mirroring must reside on two different physical disks as there is no benefit of mirroring the data on the same drive Data Data Data A B C Data Data Data A B C Drive 0 RAID 1 Mirroring 2 8 RAID 1 Racing The Storage Processor improves the speed of RAID 1 SAFE mode by introducing RAID 1 drive racing When reading a sector both mirrored drives race and the first one to get the data supplies the information lowering the average seek time 2 9 Sector Recovery and Disk Rebuild For Safe RAID 1 volumes the firmware implements three additional features to make the data more reliable Sector Recovery Disk Rebuild and Disk Verify 2 9 1 Sector Recovery For Safe RAID 1 volumes at any time if the Storage Processor detects any read or write error it automatically without host intervention gt Take the Physical Partition Off line gt Attempt to copy the respective data from the other mirrored Partition if available gt Ifthe re write is successful then the problem is solved before it got to be catastrophic gt Bring the Physical Partition On Line In case the problem still persists after re write Read Verify fails then it is assumed that Physical Partition on the Physical Disk is bad and all spare sectors implemented by the HDD itself are depleted In this event this Physical Partition with Error will stay off line Other Physical Partitions on this HDD are still good and
13. uld represent one drives as a single large drive Another option would be to make virtual storage resources according to reliability or performance requirements One virtual target could be a mirrored set consisting of drives 1 and 2 or could be a striped set consisting of drives 1 and 2 Representing multiple device targets may only be performed with port multiplier aware host controllers 2 7 Modes SRFD supports 2 modes Fast RAID 0 and Safe RAID 1 2 7 1 Fast RAID 0 Mode RAID 0 RAID Level 0 is not redundant hence does not truly fit the RAID acronym This method splits the data over numerous drives but is seen as one drive by the operating system If one drive fails though all data becomes inaccessible This level is commonly referred to as striping The RAID Processor supports a definition of Fast RAID O set The stripe size chunk size is set to 8 KB The HBA Host Bus Adapter does not need to know anything about the physical arrangement of the data To the HBA the virtualized drive behind RAID Processor is a simple normal drive that just happens to be faster All error handling etc is managed by the Processor The advantage of striping is double the data transfer throughput of a single physical drive This applies to both read and write operations Data Data A C Data Data B D Drive 0 RAID 0 Striped 2 7 2 Safe RAID 1 Mode RAID 1 Mirrored Set 2 disks minimum without parity RAID 1 set is
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