M-Systems Flash Disk Pioneers FFD 3.5" Ultra320 SCSI User manual

FFD 3.5" Ultra320 SCSI
Product Specification and User Manual
November 2005
43-PS-0305-00 Rev. 2.0

DOCUMENT CONTROL INFORMATION
DCO No.:
Title Name Date
Issued by: Rugged Product Manager, Embedded
Division Guy Freikorn April 20, 2005
Approved by: VP Marketing, Embedded Division Ofer Tsur April 20, 2005
REVISION HISTORY
Revision Date Description Reference
2.0 November 2005
Added information for new form factor, FFD
3.5” Ultra320 SCSI 68-pin
Sections 4.1.7,
4.1.8, 4.1.10, 4.2,
4.4.4, 4.4.5, 8.1.12,
8.3, 11.5, 14, 16, 17
2 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

TABLE OF CONTENTS
1. Scope .....................................................................................................................................6
2. Applicable Documents .........................................................................................................6
3. Overview................................................................................................................................7
4. Specifications........................................................................................................................8
4.1. Characteristics................................................................................................................8
4.1.1. Supported SCSI Modes...................................................................................................8
4.1.2. Bus Characteristics..........................................................................................................8
4.1.3. Performance ....................................................................................................................8
4.1.4. Access Time ....................................................................................................................9
4.1.5. Start-Up Time...................................................................................................................9
4.1.6. Seek Time........................................................................................................................9
4.1.7. Power Requirements and Consumption........................................................................10
4.1.8. Memory Capacities........................................................................................................10
4.1.9. Endurance......................................................................................................................12
4.1.10. Physical Characteristics.................................................................................................12
4.1.11. Hot Insertion (Hot Swappable).......................................................................................19
4.2. Reliability......................................................................................................................20
4.3. Embedded Error Detection and Error Correction Code (EDC/ECC)............................20
4.4. Environmental Conditions ............................................................................................20
4.4.1. Temperature ..................................................................................................................20
4.4.2. Altitude...........................................................................................................................21
4.4.3. Relative Humidity...........................................................................................................21
4.4.4. Shock.............................................................................................................................21
4.4.5. Vibration.........................................................................................................................21
4.5. Compliance with Standards..........................................................................................21
4.6. Access/Activity LED .....................................................................................................21
5. Supported SCSI Commands..............................................................................................22
6. SCSI Messages....................................................................................................................24
7. Packetized SCSI..................................................................................................................25
8. Vendor-Specific Commands..............................................................................................26
8.1. Security Erase Features...............................................................................................26
8.1.1. Full Security Erase Option.............................................................................................26
8.1.2. Partial Security Erase Option.........................................................................................26
8.1.3. Resume Option..............................................................................................................27
8.1.4. Fill-Format Option..........................................................................................................27
3 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

8.1.5. Configuration..................................................................................................................27
8.1.6. Verifying Security Erase ................................................................................................35
8.1.7. Sanitizing Based on DoD 5220.22-M ............................................................................36
8.1.8. Sanitizing Based on NSA Manual 130-2 .......................................................................36
8.1.9. Sanitizing Based on USA Air Force AFSSI 5020 ..........................................................37
8.1.10. Sanitizing (Purging) Based on USA Army Regulation 380-19.......................................37
8.1.11. Sanitizing (Purging) Based on USA Navy NAVSO P-5239-26......................................38
8.1.12. Declassification Based on IRIG-106 (NTISSP-9)..........................................................38
8.2. Security Erase Functionality.........................................................................................41
8.3. Power Consumption during Security Erase..................................................................42
8.4. LED Indicator During Erase..........................................................................................42
9. Firmware Upgrade...............................................................................................................43
10. Sense Key and Additional Sense Key Codes...................................................................44
11. Configuring and Installing the FFD 3.5” Ultra320 SCSI...................................................46
11.1. Package Contents........................................................................................................46
11.2. Visual Inspection..........................................................................................................46
11.3. Handling Instructions....................................................................................................46
11.4. System Requirements..................................................................................................47
11.5. Configuring the FFD 3.5” Ultra320 SCSI......................................................................47
11.5.1. SCSI ID Pins..................................................................................................................48
11.5.2. Termination Pins............................................................................................................49
11.5.3. Forced Single-Ended Electrical Interface Pins..............................................................49
11.5.4. Write Protect Pins..........................................................................................................49
11.5.5. Secure Erase Pins.........................................................................................................49
11.5.6. Termination Power (TRMPWR).....................................................................................50
11.5.7. LED Pins........................................................................................................................50
11.5.8. 80-Pin Connector...........................................................................................................50
11.5.9. 68-Pin Connector...........................................................................................................50
11.6. Installing the FFD 3.5” Ultra320 SCSI..........................................................................52
11.6.1. Installing the FFD in a PC..............................................................................................52
11.6.2. Using the FFD in MS-DOS-Based Platforms.................................................................54
11.6.3. Using the FFD in Microsoft Windows-Based Platforms.................................................55
11.6.4. Using the FFD in Linux-Based Platforms ......................................................................55
11.6.5. Using the FFD in Unix-Based Platforms........................................................................55
12. Troubleshooting..................................................................................................................57
12.1. Installing Your SCSI Host Adapter...............................................................................57
12.2. Termination Configuration............................................................................................58
4 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

12.3. SCSI ID Configuration..................................................................................................58
12.4. Solving Installation Problems.......................................................................................58
13. Frequently Asked Questions (FAQs) about the FFD 3.5” Ultra320 SCSI.......................60
14. Label Information................................................................................................................64
15. Built-In Test (BIT)................................................................................................................66
16. Factory Default Setup.........................................................................................................67
17. Ordering Information..........................................................................................................68
A. Old-Structure Vendor-Specific Security Erase SCSI Command.....................................69
How to Contact Us....................................................................................................................70
5 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

1. SCOPE
This specification and user manual defines the performance, design and acceptance requirements
of the FFD 3.5” Ultra320 SCSI flash disk. It also provides instructions for installing and
configuring the FFD 3.5” Ultra320 SCSI flash disk.
Throughout this manual, the FFD 3.5” Ultra320 SCSI flash disk will be referred to as FFD.
2. APPLICABLE DOCUMENTS
•ANSI X3.131-1994 American National Standard for Information Systems - Small Computer
System Interface-2 (SCSI-2).
•ANSI X3T9.2/85-82 American National Standard for Information Systems - Common
Command Set (CCS) of the Small Computer System Interface (SCSI).
•ANSI INCITS 362-2002, - SCSI Parallel Interface-4 (SPI-4).
•ANSI X3.301-1997 American National Standard Institute Information Technology - SCSI-3
Primary Commands (SPC)
•ANSI NCITS 306-1998 American National Standard Institute Information Technology -
SCSI-3 Block Commands (SBC)
•In addition, the ANSI X3.270-1996 and ANSI NCITS 336-2000 documents are applicable.
6 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

3. OVERVIEW
The FFD is a non-volatile mass memory storage unit equipped with a SCSI interface, and
containing the following subassemblies:
•CPU
•SCSI interface controller
•Flash memory array
The FFD dimensions enabling mounting in a standard 3.5” disk drive enclosure. Figure 1
illustrates the FFD block diagram.
Figure 1: FFD 3.5” Ultra320 SCSI Block Diagram
The FFD interface complies with the SCSI-2 and SCSI-3, and supports the Common Command
Set (CCS). Refer to Section 5, Table 13 for a list of supported SCSI commands.
The FFD supports both Single-Ended (SE) and Low Voltage Differential (LVD) electrical
interfaces, with 80-pin connector. Refer to Section 4.1.10.3 for specific connector interface
details.
7 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

4. SPECIFICATIONS
4.1. Characteristics
4.1.1. Supported SCSI Modes
The FFD supports the following SCSI modes:
•Asynchronous mode
•DT/PT modes
oWide PT Fast-160 (Ultra320 – 320 MB/sec)
oWide DT Fast-80 (Ultra160 – 160 MB/sec)
oWide DT Fast-40 (80 MB/sec)
oWide DT Fast-20 (40 MB/sec)
oWide DT Fast-10 (20 MB/sec)
•ST modes
oFast-40 (80 MB/sec)
oFast-20 (40 MB/sec)
oFast-10 (20 MB/sec)
oFast-5 (10 MB/sec)
4.1.2. Bus Characteristics
The FFD has 16-bit bus type (wide), LVD and SE modes.
4.1.3. Performance
Performance testing was carried out using the following setup:
•Bus type: 16-bit (wide)
•SCSI transfer mode: Ultra320 (320 MB/sec)
•OS: DOS and Windows XP
•Transfer size > 1MB
•Benchmark utility: IOMeter (release 12/2003)
8 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

The FFD meets the performance requirements, as specified in Table 1.
Table 1: FFD 3.5” Ultra320 SCSI Transfer Rates and IOPS
Operation Burst Rate (MB/Sec) Sustained(1) Rate
1MB Blocks (MB/sec) IOPS
Read 320.0 40.0(2) 1080
Write 320.0 40.0(2) 3500
Notes: 1. Transfer of aligned sequential blocks between the target and the initiator.
2. Sustained read/write rates depend on the measurement utility and the block size.
4.1.4. Access Time
Maximum access time is < 0.02 msec (20 µsec).
4.1.5. Start-Up Time
The required period for the FFD to mount the media and respond to media-related commands
(read, write, verify) depends on the media capacity (Table 2).
Table 2: FFD 3.5” Ultra320 SCSI Mount Times
Capacity (GB) Time to Mount Media (Seconds, after Low-Level Format)
2 0.2
16 1.0
64 4.1
112 7.3
160 10.4
176 11.6
During the start-up process, all SCSI commands involving media access return the following
status conditions:
•CHECK CONDITION, Sense Key NOT READY
and
•Extended Sense Key LOGICAL UNIT IN PROCESS OF BECOMING READY.
FFD supports the Start Stop Unit command, which is commonly used by the host to await the
completion of the start-up process.
4.1.6. Seek Time
The FFD has no seek time.
9 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

4.1.7. Power Requirements and Consumption
The specifications listed in Table 3 apply to all operational modes (except Secure Erase) while
Termination Power (TERMPWR) is set to OFF.
The FFD input voltage is +5VDC, with a tolerance of ±0.5V.
Table 3 describes the power consumption based on capacity and disk type (80-pin connector).
Table 3: FFD 3.5” Ultra320 SCSI Power Consumption (Typical)
Disk Type
80-Pin Connector
Disk Capacity (GB)
Idle Mode Read/Write Mode
4 1.1 A
5.5 W 1.3 A 6.5 W
64 1.2 A
6.0 W 1.4 A 8.4 W
112 1.2 A
6.0 W 1.4 A 8.4 W
160 1.3 A
6.5 W 1.5 A 7.5 W
176 1.3 A
6.5 W 1.6 A 8.0 W
224 1.2 A
6.0 W 1.4 A 8.4 W
320 1.3 A
6.5 W 1.5 A 7.5 W
352 1.3 A
6.5 W 1.6 A 8.0 W
4.1.8. Memory Capacities
Table 4 describes the available capacities for the FFD.
Table 4: FFD 3.5” Ultra320 SCSI Available Capacities
Unformatted Disk
Capacity (GB)1
Formatted Disk Capacity
(No. of Blocks) Cylinders Heads Sectors (Blocks) Bytes/ Block
1 1980498 1934 16 64 512
2 3993764 3900 16 64 512
4 8020296 7832 16 64 512
8 16073359 15697 16 64 512
12 24126423 23561 16 64 512
16 32179487 31425 16 64 512
20 40232550 39290 16 64 512
10 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

Unformatted Disk
Capacity (GB)1
Formatted Disk Capacity
(No. of Blocks) Cylinders Heads Sectors (Blocks) Bytes/ Block
24 48285614 47154 16 64 512
32 64391741 62883 16 64 512
40 80497869 78611 16 64 512
48 96603996 94340 16 64 512
56 112710124 110068 16 64 512
64 128816251 125797 16 64 512
72 144922378 141526 16 64 512
80 161028506 157254 16 64 512
96 193240760 188712 16 64 512
104 209346888 204440 16 64 512
112 225453015 220169 16 64 512
120 241559142 235898 16 64 512
128 257665270 251626 16 64 512
136 273771397 267355 16 64 512
144 289877524 283084 16 64 512
152 305983652 298812 16 64 512
160 322089779 314541 16 64 512
168 338195907 330269 16 64 512
176 354302034 345998 16 64 512
192 386481521 377423 16 64 512
208 418693775 408881 16 64 512
224 450906030 440338 16 64 512
240 483118285 471795 16 64 512
256 515330540 503252 16 64 512
272 547542794 534710 16 64 512
288 579755049 566167 16 64 512
304 611967304 597624 16 64 512
320 644179558 629082 16 64 512
336 676391813 660539 16 64 512
352 708604068 691996 16 64 512
Note: Memory capacity is specified when placing device orders.
11 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

4.1.9. Endurance
The FFD supports more than 5,000,000 erase cycles and an unlimited number of read cycles,
enhanced by the following features:
•Dynamic Wear-Leveling Algorithm: This algorithm eliminates situations where the
application repeatedly writes to the same physical location until its flash components wear
out. The dynamic wear leveling algorithm applies virtual mapping of logical sectors to
physical blocks and is completely transparent to the customer application.
•Garbage Collection Process: This process eliminates the need to perform an erase
operation prior to every write operation, which eliminates excessive disk deterioration.
Additionally, the garbage collection process accumulates data considered necessary for
erasure until the block is full.
•EDC/ECC (Error Detection Code/Error Correction Code): The FFD has embedded error
detection and error correction hardware and software mechanisms. The EDC/ECC uses the
BCH algorithm, which can detect up to 5 errors in 512 bytes of data, and correct up to 4
errors.
•Bad-Block Mapping Algorithm: This algorithm replaces bad blocks with new blocks from
available spares.
4.1.10. Physical Characteristics
4.1.10.1 Weight
The weight of the FFD conforms to the values defined in Table 5.
Table 5: FFD 3.5” Ultra320 SCSI Weight
Memory Capacity (GB) Case Height (in) Maximum Weight (g)
1 – 8 0.5 25
12 – 64 0.5 275
72 – 112 1 415
120 – 160 1 480
168 – 176 1 525
192 – 224 1 415
240 – 320 1 480
336 – 352 1 525
12 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

4.1.10.2 Dimensions
Table 6 contains the nominal dimensions of the FFD. Refer to Figure 2 for detailed mounting
configuration dimensions.
Table 6: FFD 80-pin Nominal Dimensions
Height Width Depth
0.5 in 4.00 in 5.75 in
12.70 mm 101.60 mm 146.05 mm
Table 7: FFD 68-pin Nominal Dimensions
Height Width Depth
0.5 in 4.00 in 5.75 in
12.70 mm 101.60 mm 146.10 mm
Note: For capacities higher than 64GB, the FFD is supplied in a 1” (25.4 mm) high raised casing.
Figure 2: FFD 3.5” Ultra320 SCSI 80-Pin Assembly (in Inches)
13 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

Figure 3: FFD 3.5” Ultra320 SCSI 68-Pin Assembly (in Inches)
4.1.10.3 80-Pin Connector Interface
The FFD 80-pin connector interface pinouts are described in Table 8 and Table 9, according to
the electrical interface being used.
Table 8: 80-Pin Connector Pinout with Single-Ended (SE) Electrical Interface
Pin Number Signal Name Pin Number Signal Name
1 RESERVED 41 GROUND
2 RESERVED 42 GROUND
3 RESERVED 43 GROUND
4 RESERVED 44 MATED 1
5 RESERVED 45 RESERVED
6 RESERVED 46 GROUND
7 -DB(11) 47 GROUND
8 -DB(10) 48 GROUND
9 -DB(9) 49 GROUND
10 -DB(8) 50 GROUND
11 -I/O 51 GROUND
12 -REQ 52 GROUND
13 -C/D 53 GROUND
14 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

Pin Number Signal Name Pin Number Signal Name
14 -SEL 54 GROUND
15 -MSG 55 GROUND
16 -RST 56 GROUND
17 -ACK 57 GROUND
18 -BSY 58 GROUND
19 -ATN 59 GROUND
20 -DBP(0) 60 GROUND
21 -DB(7) 61 GROUND
22 -DB(6) 62 GROUND
23 -DB(5) 63 GROUND
24 -DB(4) 64 GROUND
25 -DB(3) 65 GROUND
26 -DB(2) 66 GROUND
27 -DB(1) 67 GROUND
28 -DB(0) 68 GROUND
29 -DBP(1) 69 GROUND
30 -DB(15) 70 GROUND
31 -DB(14) 71 GROUND
32 -DB(13) 72 GROUND
33 -DB(12) 73 GROUND
34 5VDC 74 MATED 2
35 5VDC 75 GROUND
36 5VDC 76 GROUND
37 RESERVED 77 ACTIVE LED
38 RESERVED 78 RESERVED
39 SCSI ID (0) 79 SCSI ID (1)
40 SCSI ID (2) 80 SCSI ID (3)
Table 9: 80-Pin Connector Pinout with Low Voltage Differential (LVD) Electrical Interface
Pin Number Signal Name Pin Number Signal Name
1 RESERVED 41 GROUND
2 RESERVED 42 GROUND
3 RESERVED 43 GROUND
4 RESERVED 44 MATED 1
5 RESERVED 45 RESERVED
6 RESERVED 46 DIFFSENS
7 -DB(11) 47 +DB(11)
8 -DB(10) 48 +DB(10)
9 -DB(9) 49 +DB(9)
15 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

Pin Number Signal Name Pin Number Signal Name
10 -DB(8) 50 +DB(8)
11 -I/O 51 +I/O
12 -REQ 52 +REQ
13 -C/D 53 +C/D
14 -SEL 54 +SEL
15 -MSG 55 +MSG
16 -RST 56 +RST
17 -ACK 57 +ACK
18 -BSY 58 +BSY
19 -ATN 59 +ATN
20 -DBP(0) 60 +DBP(0)
21 -DB(7) 61 +DB(7)
22 -DB(6) 62 +DB(6)
23 -DB(5) 63 +DB(5)
24 -DB(4) 64 +DB(4)
25 -DB(3) 65 +DB(3)
26 -DB(2) 66 +DB(2)
27 -DB(1) 67 +DB(1)
28 -DB(0) 68 +DB(0)
29 -DBP(1) 69 +DBP(1)
30 -DB(15) 70 +DB(15)
31 -DB(14) 71 +DB(14)
32 -DB(13) 72 +DB(13)
33 -DB(12) 73 +DB(12)
34 5VDC 74 MATED 2
35 5VDC 75 GROUND
36 5VDC 76 GROUND
37 RESERVED 77 ACTIVE LED
38 RESERVED 78 RESERVED
39 SCSI ID (0) 79 SCSI ID (1)
40 SCSI ID (2) 80 SCSI ID (3)
Notes: 1. The 12V pins, as defined in the SCA specification (pins 1-4 on the 80-pin connector),
are not required for FFD operation. These pins may be connected to a 12V power
supply or left unconnected.
2. The Activity LED is limited to 24 mA and a 100 resistor.
16 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

4.1.10.4 68-Pin Connector Interface
The FFD 68-pin connector interface pinouts are described in Table 10 and Table 11, according to
the electrical interface being used.
Table 10: Pinout for FFD 68-Pin Connector with Single-Ended Electrical Interface
Pin Number Signal Name Pin Number Signal Name
1 GROUND 35 -DB(12)
2 GROUND 36 -DB(13)
3 GROUND 37 -DB(14)
4 GROUND 38 -DB(15)
5 GROUND 39 -DBP(1)
6 GROUND 40 -DB(0)
7 GROUND 41 -DB(1)
8 GROUND 42 -DB(2)
9 GROUND 43 -DB(3)
10 GROUND 44 -DB(4)
11 GROUND 45 -DB(5)
12 GROUND 46 -DB(6)
13 GROUND 47 -DB(7)
14 GROUND 48 -DBP(0)
15 GROUND 49 GROUND
16 GROUND 50 GROUND
17 TERMPWR 51 TERMPWR
18 TERMPWR 52 TERMPWR
19 RESERVED 53 RESERVED
20 GROUND 54 GROUND
21 GROUND 55 -ATN
22 GROUND 56 GROUND
23 GROUND 57 -BSY
24 GROUND 58 -ACK
25 GROUND 59 -RST
26 GROUND 60 -MSG
27 GROUND 61 -SEL
28 GROUND 62 -C/D
29 GROUND 63 -REQ
30 GROUND 64 -I/O
31 GROUND 65 -DB(8)
32 GROUND 66 -DB(9)
17 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

Pin Number Signal Name Pin Number Signal Name
33 GROUND 67 -DB(10)
34 GROUND 68 -DB(11)
Table 11: Pinout for FFD 68-Pin Connector with Low Voltage Differential Electrical Interface
Pin Number Signal Name Pin Number Signal Name
1 +DB(12) 35 -DB(12)
2 +DB(13) 36 -DB(13)
3 +DB(14) 37 -DB(14)
4 +DB(15) 38 -DB(15)
5 +DBP(1) 39 -DBP(1)
6 +DB(0) 40 -DB(0)
7 +DB(1) 41 -DB(1)
8 +DB(2) 42 -DB(2)
9 +DB(3) 43 -DB(3)
10 +DB(4) 44 -DB(4)
11 +DB(5) 45 -DB(5)
12 +DB(6) 46 -DB(6)
13 +DB(7) 47 -DB(7)
14 +DBP(0) 48 -DBP(0)
15 GROUND 49 GROUND
16 DIFFSENS 50 GROUND
17 TERMPWR 51 TERMPWR
18 TERMPWR 52 TERMPWR
19 RESERVED 53 RESERVED
20 GROUND 54 GROUND
21 +ATN 55 -ATN
22 GROUND 56 GROUND
23 +BSY 57 -BSY
24 +ACK 58 -ACK
25 +RST 59 -RST
26 +MSG 60 -MSG
27 +SEL 61 -SEL
28 +C/D 62 -C/D
29 +REQ 63 -REQ
30 +I/O 64 -I/O
31 +DB(8) 65 -DB(8)
18 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

Pin Number Signal Name Pin Number Signal Name
32 +DB(9) 66 -DB(9)
33 +DB(10) 67 -DB(10)
34 +DB(11) 68 -DB(11)
4.1.11. Hot Insertion (Hot Swappable)
The following classes of hot insertion are supported by the 80-pin FFD (in accordance with the
SCSI controller data sheet):
•Class 1: Power OFF during removal or insertion.
•Class 2: RST signal asserted continuously during removal or insertion.
•Class 3: Current I/O processes not permitted during insertion or removal.
19 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0

4.2. Reliability
The FFD provides a very high number of hours for Mean Time Between Failures (MTBF). Exact
times are capacity dependent, as described in Table 12.
Table 12: Mean Time Between Failures (MTBF) per Capacity
Capacity (GB) Mean Time Between Failures (Hours)
2, 4, 8 692,530
16, 32 468,648
64 313,499
112, 224 202,610
160, 320 149,669
176, 352 135,662
Performance assessments are based on Telcordia SR-332, GB, 25°C. A detailed MTBF report
can be provided upon customer request.
4.3. Embedded Error Detection and Error Correction Code
(EDC/ECC)
The FFD has embedded error detection and error correction hardware and software mechanisms.
The EDC/ECC uses the BCH algorithm, which can detect up to 5 errors in 512 bytes of data, and
correct up to 4 errors.
4.4. Environmental Conditions
The FFD complies with the performance requirements specified herein after exposure to
non-operating environmental conditions, or during and after exposure to operating environmental
conditions.
4.4.1. Temperature
The FFD operates without degradation at 1 atmosphere in the following air temperature ranges:
•Commercial temperature version: 0°C to +70°C
•Enhanced temperature version: -25°C to +75°C
•Extended temperature version: -40°C to +85°C
The FFD meets the performance requirements specified herein after withstanding exposure
to a nominal ambient temperature of –40°C for not less than 3 days, and of +85°C for a
period of not less than 6 hours.
•Storage temperature range: -55°C to +95°C
20 Product Specification and User Manual FFD 3.5" Ultra320 SCSI 43-PS-0305-00 Rev. 2.0