Hitachi Deskstar 7K250 User manual

Hard Disk Drive Specification
Deskstar 7K250
3.5 inch Ultra ATA/100 hard disk drive
Models: HDS722525VLAT80
HDS722516VLAT80
HDS722516VLAT20
HDS722512VLAT80
HDS722512VLAT20
HDS722580VLAT20
HDS722540VLAT20
Version 1.5 12 December 2005

Hard Disk Drive Specification
Deskstar 7K250
3.5 inch Ultra ATA/100 hard disk drive
Models: HDS722525VLAT80
HDS722516VLAT80
HDS722516VLAT20
HDS722512VLAT80
HDS722512VLAT20
HDS722580VLAT20
HDS722540VLAT20
Version 1.5 12 December 2005

1st Edition (Revision 0.1) Sxxx-xxxx-01 (1 April 2003) Preliminary
2nd Edition (Revision 0.2) Sxxx-xxxx-01 (5 June 2003) Revision
3rd Edition (Revision 0.3) Sxxx-xxxx-03 (8 July 2003) Revision
4th Edition (Revision 1.0) Sxxx-xxxx-10 (14 July 2003) Revision
5th Edition (Revision 1.1) Sxxx-xxxx-11 (13 August 2003) Revision
6th Edition (Revision 1.2) (09 February 2004) Revision
7th Edition (Revision 1.3) (24 June2004) Revision
8th Edition (Revision 1.4) (21 September 2005) Revision
9th Edition (Revision 1.5) (12 December 2005) Final
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Table Of Contents
1.0 General................................................................................................................1
1.1 Introduction..............................................................................................1
1.2 References................................................................................................1
1.3 Abbreviations...........................................................................................1
1.4 Caution.....................................................................................................3
2.0 General features of the drive ............................................................................5
3.0 Fixed-disk subsystem description.....................................................................9
3.1 Control electronics...................................................................................9
3.2 Head disk assembly ................................................................................9
3.3 Actuator ...................................................................................................9
4.0 Drive characteristics..........................................................................................11
4.1 Default logical drive parameters..............................................................11
4.2 Data sheet.................................................................................................12
4.3 Drive organization ...................................................................................13
4.3.1 Drive format....................................................................................13
4.3.2 Cylinder allocation..........................................................................13
4.4 Performance characteristics.....................................................................15
4.4.1 Command overhead........................................................................15
4.4.2 Mechanical positioning...................................................................15
4.4.3 Drive ready time .............................................................................17
4.4.4 Data transfer speed..........................................................................18
4.4.5 Throughput......................................................................................19
4.4.6 Operating modes.............................................................................20
5.0 Defect flagging strategy.....................................................................................21
6.0 Specification .......................................................................................................23
6.1 Jumper settings ........................................................................................23
6.1.1 Jumper pin location.........................................................................23
6.1.2 Jumper pin identification ................................................................23
6.1.3 Jumper pin assignment....................................................................24
6.1.4 Jumper positions .............................................................................24
6.2 Environment.............................................................................................28
6.2.1 Temperature and humidity..............................................................28
6.2.2 Corrosion test..................................................................................29
6.3 DC power requirements...........................................................................29
6.3.1 Input voltage ...................................................................................29

6.3.2 Power supply current (typical)........................................................29
6.3.3 Power supply generated ripple at drive power connector...............31
6.4 Reliability.................................................................................................32
6.4.1 Data integrity ..................................................................................32
6.4.2 Cable noise interference..................................................................32
6.4.3 Start/stop cycles..............................................................................32
6.4.4 Preventive maintenance..................................................................32
6.4.5 Data reliability ................................................................................32
6.4.6 Required power-off sequence.........................................................32
6.5 Mechanical specifications........................................................................33
6.5.1 Physical dimensions and weight.....................................................33
6.5.2 Mounting hole locations .................................................................34
6.5.3 Connector locations ........................................................................35
6.5.4 Drive mounting...............................................................................35
6.5.5 Heads unload and actuator lock......................................................35
6.6 Vibration and shock.................................................................................36
6.6.1 Operating vibration.........................................................................36
6.6.2 Nonoperating vibration...................................................................36
6.6.3 Operating shock..............................................................................37
6.6.4 Nonoperating shock........................................................................37
6.6.5 Nonoperating rotational shock........................................................38
6.7 Acoustics..................................................................................................39
6.8 Identification labels..................................................................................39
6.9 Safety .......................................................................................................40
6.9.1 UL and CSA approval.....................................................................40
6.9.2 German safety mark........................................................................40
6.9.3 Flammability...................................................................................40
6.9.4 Safe handling ..................................................................................40
6.9.5 Environment....................................................................................40
6.9.6 Secondary circuit protection...........................................................40
6.10 Electromagnetic compatibility...............................................................41
6.10.1 CE mark........................................................................................41
6.10.2 C-TICK mark................................................................................41
6.10.3 BSMI mark ...................................................................................41
6.11 Packaging...............................................................................................41
7.0 Electrical interface specification.......................................................................43
7.1 Connector location...................................................................................43
7.1.1 DC power connector.......................................................................43
7.1.2 AT signal connector........................................................................43
7.2 Signal definitions.....................................................................................44
7.3 Signal descriptions...................................................................................45
7.4 Interface logic signal levels .....................................................................48
7.5 Reset timings............................................................................................48
7.6 PIO timings..............................................................................................49
7.6.1 Write DRQ interval time.................................................................49

7.6.2 Read DRQ interval time .................................................................50
7.7 Multi word DMA timings........................................................................51
7.8 Ultra DMA timings..................................................................................52
7.8.1 Initiating Read DMA ......................................................................52
7.8.2 Host Pausing Read DMA................................................................53
7.8.3 Host Terminating Read DMA.........................................................54
7.8.4 Device Terminating Read DMA.....................................................55
7.8.5 Initiating Write DMA .....................................................................56
7.8.6 Device Pausing Write DMA...........................................................57
7.8.7 Device Terminating Write DMA....................................................58
7.8.8 Host Terminating Write DMA........................................................59
7.9 Addressing of registers ............................................................................60
7.9.1 Cabling............................................................................................60
8.0 General................................................................................................................63
8.1 Introduction..............................................................................................63
8.2 Terminology.............................................................................................63
8.3 Deviations from standard.........................................................................63
9.0 Registers..............................................................................................................65
9.1 Register set...............................................................................................65
9.2 Alternate Status Register .........................................................................66
9.3 Command Register ..................................................................................66
9.4 Cylinder High Register............................................................................66
9.5 Cylinder Low Register.............................................................................66
9.6 Data Register............................................................................................67
9.7 Device Control Register..........................................................................67
9.8 Drive Address Register............................................................................68
9.9 Device/Head Register ..............................................................................68
9.10 Error Register.........................................................................................69
9.11 Features Register....................................................................................69
9.12 Sector Count Register............................................................................69
9.13 Sector Number Register.........................................................................70
9.14 Status Register .......................................................................................70
10.0 General operation............................................................................................73
10.1 Reset response........................................................................................73
10.2 Register initialization.............................................................................74
10.3 Diagnostic and Reset considerations .....................................................75
10.4 Sector Addressing Mode........................................................................76
10.4.1 Logical CHS addressing mode .....................................................76
10.4.2 LBA addressing mode ..................................................................76
10.5 Overlapped and queued feature .............................................................76
10.6 Power management features..................................................................78
10.6.1 Power mode ..................................................................................78

10.6.2 Power management commands ....................................................78
10.6.3 Standby timer................................................................................78
10.6.4 Interface capability for power modes ...........................................79
10.7 S.M.A.R.T. Function .............................................................................80
10.7.1 Attributes ......................................................................................80
10.7.2 Attribute values.............................................................................80
10.7.3 Attribute thresholds.......................................................................80
10.7.4 Threshold exceeded condition ......................................................80
10.7.5 S.M.A.R.T. commands .................................................................80
10.7.6 Off-line read scanning ..................................................................80
10.7.7 Error log........................................................................................81
10.7.8 Self-test.........................................................................................81
10.8 Security Mode Feature Set.....................................................................82
10.8.1 Security mode ...............................................................................82
10.8.2 Security level ................................................................................82
10.8.3 Passwords......................................................................................83
10.8.4 Operation example........................................................................83
10.8.5 Command table.............................................................................86
10.9 Host Protected Area Feature..................................................................87
10.9.1 Example for operation (In LBA Mode)........................................87
10.9.2 Security extensions .......................................................................88
10.10 Seek overlap.........................................................................................89
10.11 Write cache function............................................................................90
10.12 Reassign function.................................................................................91
10.12.1 Auto Reassign function...............................................................91
10.13 Power-Up in Standby feature set .........................................................92
10.14 Advanced Power Management feature set (APM) ..............................93
10.15 Automatic Acoustic Management feature set (AAM).........................94
10.16 Address Offset Feature ........................................................................95
10.16.1 Enable/Disable Address Offset Mode.........................................95
10.16.2 Identify Device Data...................................................................96
10.16.3 Exceptions in Address Offset Mode..........................................96
10.17 48-bit Address Feature Set...................................................................97
11.0 Command protocol ..........................................................................................99
11.1 PIO Data In commands..........................................................................99
11.2 PIO Data Out Commands ......................................................................100
11.3 Non-data commands .............................................................................102
11.4 DMA commands....................................................................................103
11.5 DMA queued commands .......................................................................104
12.0 Command descriptions....................................................................................105
12.1 Check Power Mode (E5h/98h) ..............................................................109
12.2 Device Configuration Overlay (B1h) ....................................................110
12.2.1 DEVICE CONFIGURATION RESTORE..................................110

12.2.2 DEVICE CONFIGURATION FREEZE LOCK (subcommand C1h)110
12.2.3 DEVICE CONFIGURATION IDENTIFY (subcommand C2h).111
12.2.4 DEVICE CONFIGURATION SET (subcommand C3h).............111
12.3 Execute Device Diagnostic (90h) ..........................................................114
12.4 Flush Cache (E7h) .................................................................................115
12.5 Flush Cache Ext (EAh)..........................................................................116
12.6 Format Track (50h)................................................................................117
12.7 Format Unit (F7h)..................................................................................118
12.8 Identify Device (ECh)............................................................................119
12.9 Idle (E3h/97h).......................................................................................127
12.10 Idle Immediate (E1h/95h)....................................................................128
12.11 Initialize Device Parameters (91h) ......................................................129
12.12 NOP (00h)............................................................................................130
12.13 Read Buffer (E4h)................................................................................131
12.14 Read DMA (C8h/C9h).........................................................................132
12.15 Read DMA Ext (25h)...........................................................................134
12.16 Read DMA Queued (C7h)...................................................................136
12.17 Read DMA Queued Ext (26h) .............................................................138
12.18 Read Log Ext (2Fh) .............................................................................140
12.18.1 General Purpose Log Directory..................................................141
12.18.2 Extended Comprehensive SMART Error Log............................142
12.18.3 Extended Self-test log sector ......................................................144
12.19 Read Long (22h/23h)...........................................................................146
12.20 Read Multiple (C4h)............................................................................148
12.21 Read Multiple Ext (29h) ......................................................................150
12.22 Read Native Max ADDRESS (F8h)....................................................152
12.23 Read Native Max Address Ext (27h)...................................................153
12.24 Read Sectors (20h/21h)........................................................................154
12.25 Read Sector(s) Ext (24h)......................................................................156
12.26 Read Verify Sectors (40h/41h) ............................................................158
12.27 Read Verify Sector(s) (42h).................................................................160
12.28 Recalibrate (1xh)..................................................................................162
12.29 Security Disable Password (F6h).........................................................163
12.30 Security Disable Password (F3h).........................................................164
12.31 Security Erase Unit (F4h) ....................................................................165
12.32 Security Freeze Lock (F5h) .................................................................167
12.33 Security Set Password (F1h)................................................................168
12.34 Security Unlock (F2h) .........................................................................170
12.35 Seek (7xh)...........................................................................................171
12.36 Service (A2h ........................................................................................)172
12.37 Set Features (EFh) ...............................................................................173
12.37.1 Set Transfer mode.......................................................................174
12.37.2 Write Cache ................................................................................174
12.37.3 Advanced Power Management...................................................174
12.37.4 Automatic Acoustic Management ..............................................175
12.38 Set Max ADDRESS (F9h)...................................................................176

12.38.1 Set Max Set Password (Feature=01h).........................................178
12.38.2 Set Max Lock (Feature=02h)......................................................179
12.38.3 Set Max Unlock (Feature = 03h) ................................................180
12.38.4 Set Max Freeze Lock (Feature = 04h) ........................................181
12.39 Set Max Address Ext (37h)..................................................................182
12.40 Set Multiple (C9h) ...............................................................................184
12.41 Sleep (E6h/99h) ...................................................................................185
12.42 S.M.A.R.T. Function Set (B0h)...........................................................186
12.42.1 S.M.A.R.T. Function Subcommands.........................................186
12.42.2 Device Attribute Data Structure .................................................190
12.42.3 Device Attribute Thresholds data structure ................................193
12.42.4 S.M.A.R.T. Log Directory..........................................................195
12.42.5 S.M.A.R.T. summary error log sector ........................................195
12.42.6 Self-test log data structure .........................................................197
12.42.7 Error reporting ............................................................................198
12.43 Standby (E2h/96h)...............................................................................199
12.44 Standby Immediate (E0h/94h).............................................................200
12.45 Write Buffer (E8h)...............................................................................201
12.46 Write DMA (CAh/CBh) ......................................................................202
12.47 Write DMA Ext (35h)..........................................................................204
12.48 Write DMA Queued (CAh/CBh).........................................................206
12.49 Write DMA Queued Ext (36h) ............................................................208
12.50 Write Log Ext (3Fh) ............................................................................210
12.51 Write Long (32h/33h)..........................................................................211
12.52 Write Multiple (C5h) ...........................................................................213
12.53 Write Multiple Ext (39h) .....................................................................215
12.54 Write Sectors (30h/31h).......................................................................217
12.55 Write Sector(s) (34h) ...........................................................................219
13.0 Time-out values................................................................................................221

List of Tables
Table 1.Formatted capacities.....................................................................................11
Table 2.Mechanical positioning performance ...........................................................12
Table 3.Cylinder allocation........................................................................................13
Table 4.Command overhead......................................................................................15
Table 5.Mechanical positioning performance ...........................................................15
Table 6.Full stroke seek time.....................................................................................16
Table 7.Head switch time ..........................................................................................16
Table 8.Single track seek time...................................................................................17
Table 9.Latency Time................................................................................................17
Table 10.Drive ready time .........................................................................................17
Table 11.Data transfer speed .....................................................................................18
Table 12.Simple Sequential Access performance......................................................19
Table 13.Random Access performance .....................................................................19
Table 14.Random Access Performance.....................................................................19
Table 15.Description of operating modes..................................................................20
Table 16.Mode transition time...................................................................................20
Table 17.Plist physical format ...................................................................................21
Table 18.Jumper positions for capacity clip to 2GB/32GB.......................................26
Table 19.Jumper settings for Disabling Auto Spin....................................................26
Table 20.Temperature and humidity..........................................................................28
Table 21.Input voltage...............................................................................................29
Table 22.Power supply current of xxx-GB models ...................................................29
Table 23.Power supply generated ripple at drive power connector...........................31
Table 24.Random vibration PSD...............................................................................36
Table 25.Random vibration PSD profile break points (operating)............................36
Table 26.Random Vibration PSD profile breakpoints (nonoperating)......................36
Table 27.Sinusoidal shock wave................................................................................38
Table 28.Rotational shock .......................................................................................38
Table 29.Sound power levels.....................................................................................39
Table 30.Sound power levels.....................................................................................39
Table 31.Signal definitions........................................................................................44
Table 32.Special signal definitions for Ultra DMA...................................................45
Table 33.I/O address map..........................................................................................60
Table 34.Register Set.................................................................................................65
Table 35.Alternate Status Register ............................................................................66
Table 36.Device Control Register .............................................................................67
Table 37.Drive Address Register...............................................................................68
Table 38.Device Head/Register.................................................................................68
Table 39.Error Register..............................................................................................69
Table 40.Status Register ............................................................................................70
Table 41.Reset response table....................................................................................73

Table 42.Default Register Values..............................................................................74
Table 43.Diagnostic codes.........................................................................................74
Table 44.Reset error register values ..........................................................................75
Table 45.Power conditions ........................................................................................79
Table 46.Command table for device lock operation..................................................86
Table 47.Command Set (1 of 2).................................................................................105
Table 48.Command Set (2 of 2).................................................................................106
Table 49.Command Set (subcommand).....................................................................107
Table 50.Check Power Mode command (E5h/98h)...................................................109
Table 51.Check Power Mode Command (E5h/98h)..................................................110
Table 52.Device Configuration Overlay Features register values.............................110
Table 53.Device Configuration Overlay Data structure............................................112
Table 54.DCO error information definition...............................................................113
Table 55.Execute Device Diagnostic command (90h) ..............................................114
Table 56.Flush Cache command (E7h)......................................................................115
Table 57.Flush Cache Ext Command (EAh) .............................................................116
Table 58.Format Track command (50h)....................................................................117
Table 59.Format Unit command (F7h)......................................................................118
Table 60.Identify Device command (ECh)................................................................119
Table 61.Identify device information (Part 1 of 7)....................................................120
Table 62.Identify device information (Part 2 of 7)...................................................121
Table 63.Identify device information (Part 3 of 7)....................................................122
Table 64.Identify device information (Part 4 of 7)....................................................123
Table 65.Identify device information (Part 5 of 7 .....................................................124
Table 66.Identify device information (Part 6 of 7)....................................................125
Table 67.Identify device information (Part 7 of 7)....................................................126
Table 68.Idle command (E3h/97h)............................................................................127
Table 69.Idle Immediate command (E1h/95h)..........................................................128
Table 70.Initialize Device Parameters command (91h).............................................129
Table 71.NOP Command (00h).................................................................................130
Table 72.Read Buffer (E4h).......................................................................................131
Table 73.Read DMA command (C8h/C9h)...............................................................132
Table 74.Read DMA Ext Command (25h)................................................................134
Table 75.Read DMA command (C8h/C9h)...............................................................136
Table 76.Read DMA Ext Command (25h)................................................................138
Table 77.Read Log Ext Command (2Fh)...................................................................140
Table 78.Log Address Definition ..............................................................................141
Table 79.General Purpose Log Directory..................................................................141
Table 80.Extended Comprehensive SMART Error Log ...........................................142
Table 81.Extended Error log data structure...............................................................142
Table 82.Command data structure.............................................................................143
Table 83.Error data structure .....................................................................................143
Table 84.Read Long (22h/23h)..................................................................................146
Table 85.Read Multiple (C4h)...................................................................................148
Table 86.Read DMA Ext Command (25h)................................................................150
Table 87.Read Native Max ADDRESS (F8h)...........................................................152

Table 88.Read Native Max Address Ext command (27h).........................................153
Table 89.Read Sectors Command (20h/21h).............................................................154
Table 90.Read Sector(s) Ext command (24h)...........................................................156
Table 91.Read Verify Sectors (40h/41h)...................................................................158
Table 92.Read Verify Sector(s) command (42h).......................................................160
Table 93.Recalibrate (1xh) ........................................................................................162
Table 94.Security Disable Password (F6h)................................................................163
Table 95.Password Information for Security Disable Password command...............163
Table 96.Security Disable Password (F3h)................................................................164
Table 97.Security Erase Unit (F4h)...........................................................................165
Table 98.Erase Unit information ...............................................................................165
Table 99.Security Freeze Lock command (F5h) .......................................................167
Table 100.Security Set Password command (F1h)....................................................168
Table 101.Security Set Password Information ..........................................................168
Table 102.Security Unlock command (F2h)..............................................................170
Table 103.Seek command (7xh)................................................................................171
Table 104.Service command (A2h)...........................................................................172
Table 105.Set Features command (EFh)....................................................................173
Table 106.Set Max ADDRESS command (F9h).......................................................176
Table 107.Set Max Set Password command..............................................................178
Table 108.Set Max Set Password data contents ........................................................178
Table 109.Set Max Lock command...........................................................................179
Table 110.Set Max Unlock command (F9h) .............................................................180
Table 111.Set Max Freeze Lock (F9h)......................................................................181
Table 112.Set Max Address Ext command (37h)......................................................182
Table 113.Set Multiple command (C6h) ...................................................................184
Table 114.Sleep command (E6h/99h) .......................................................................185
Table 115.S.M.A.R.T. Function Set command (B0h)...............................................186
Table 116.Device Attribute Data Structure ...............................................................190
Table 117.Individual Attribute Data Structure ..........................................................190
Table 118.Device Attribute Thresholds Data Structure.............................................194
Table 119.Individual Threshold Data Structure ........................................................194
Table 120.S.M.A.R.T. Log Directory........................................................................195
Table 121.S.M.A.R.T. summary error log sector ....................................................195
Table 122.Error log data structure............................................................................196
Table 123.Command data structure...........................................................................196
Table 124.Error data structure ...................................................................................196
Table 125.Self-test log data structure ........................................................................197
Table 126.S.M.A.R.T. Error Codes...........................................................................198
Table 127.Standby (E2h/96h)....................................................................................199
Table 128.Standby Immediate (E0h/94h)..................................................................200
Table 129.Write Buffer (E8h)....................................................................................201
Table 130.Write DMA (CAh/CBh) ...........................................................................202
Table 131.Write DMA Ext Command (35h)............................................................204
Table 132.Write DMA Queued Command CAh/CBh) .............................................206
Table 133.Write DMA Queued Ext Command (36h)...............................................208

Table 134.Write Log Ext Command (3Fh)...............................................................210
Table 135.Write Long (32h/33h)...............................................................................211
Table 136.Write Multiple (C5h)................................................................................213
Table 137.Write Log Ext Command (3Fh)...............................................................215
Table 138.Write Sectors command (30h/31h)...........................................................217
Table 139.Write Sector(s) Command (34h) .............................................................219

Deskstar 7K250 Hard Disk Drive Specification
1
1.0 General
1.1 Introduction
This document describes the specifications of the Deskstar 7K250, a 3.5-inch hard disk drive with ATA interface
and a rotational speed of 7200 RPM.
These specifications are subject to change without notice.
1.2 References
• Information Technology - AT Attachment with Packet Interface-6.
1.3 Abbreviations
Abbreviation Meaning
AAmpere
AC alternating current
AT Advanced Technology
ATA Advanced Technology Attachment
BIOS Basic Input/Output System
C Celsius
CSA Canadian Standards Association
C-UL Canadian-Underwriters Laboratory
Cyl cylinder
DC Direct Current
DFT Drive Fitness Test
DMA Direct Memory Access
ECC error correction code
EEC European Economic Community
EMC electromagnetic compatibility
ERP Error Recovery Procedure
ESD Electrostatic Discharge
FCC Federal Communications Commission
HDS722540VLAT20 41.1GB
HDS722580VLAT20 82.3GB
HDS722512VLAT20/
HDS722512VLAT80 123.5GB
HDS722516VLAT20/
HDS722516VLA820 164.7GB
HDS722525VLAT80 250GB

Deskstar 7K250 Hard Disk Drive Specification
2
FRU field replacement unit
G gravity (a unit of force)
G2/Hz (32 ft/sec)2per Hertz
Gb 1,000,000,000 bits
GB 1,000,000,000 bytes
GND ground
h hexadecimal
HDD hard disk drive
Hz Hertz
I Input
ILS integrated lead suspension
I/O Input/Output
ISO International Standards Organization
KB 1,000 bytes
Kbpi 1000 bits per inch
kgf-cm kilogram (force)-centimeter
KHz kilohertz
LBA logical block addressing
Lw unit of A-weighted sound power
mmeter
max maximum
MB 1,000,000 bytes
Mbps 1,000,000 bits per second
MHz megahertz
MLC Machine Level Control
mm millimeter
ms millisecond
us, ms microsecond
OOutput
OD Open Drain Programmed Input/Output
PIO
POH power on hours
Pop population
P/N part number
p-p peak-to-peak
PSD power spectral density
RES radiated electromagnetic susceptibility
RFI radio frequency interference
RH relative humidity
RMS root mean square
RPM revolutions per minute
RST reset
R/W read/write

Deskstar 7K250 Hard Disk Drive Specification
3
sec second
SELV secondary low voltage
S.M.A.R.TSelf-Monitoring, Analysis, and Reporting Technology
TPI tracks per inch
Trk track
TTL transistor-transistor logic
UL Underwriters Laboratory
Vvolt
VDE Verband Deutscher Electrotechniker
Wwatt
3-state transistor-transistor tristate logic
1.4 Caution
• Do not apply force to the top cover.
• Do not cover the breathing hole on the top cover.
• Do not touch the interface connector pins or the surface of the printed circuit board
• This drive can be damaged by electrostatic discharge (ESD). Any damages incurred to the drive after its
removal from the shipping package and the ESD protective bag are the responsibility of the user.

Deskstar 7K250 Hard Disk Drive Specification
4

Deskstar 7K250 Hard Disk Drive specification
5
2.0 General features of the drive
• Formatted capacities of 40 GB - 250 GB
• Spindle speeds of 7200 RPM
• Fluid Dynamic Bearing motor
• Enhanced IDE interface
• Sector format of 512 bytes/sector
• Closed-loop actuator servo
• Load/Unload mechanism, non head disk contact start/stop
• Automatic Actuator lock
• Interleave factor 1:1
• Seek time of 8.5 ms (40-GB, 80-GB models), 8.2 ms (120GB, 160GB and 250GB) typical without Com-
mand Overhead
• Sector Buffer size of 2048 KB and 8192 KB (Upper 260 KB is used for firmware)
• Ring buffer implementation
• Write Cache
• Queued feature support
• Advanced ECC On The Fly (EOF)
• Automatic Error Recovery procedures for read and write commands
• Self Diagnostics on Power on and resident diagnostics
• PIO Data Transfer Mode 4 (16.6 MB/s)
• DMA Data Transfer
• Multiword mode Mode 2 (16.6 MB/s)
• Ultra DMA Mode 5 (100 MB/s)
• CHS and LBA mode
• Power saving modes/Low RPM idle mode (APM)
• S.M.A.R.T. (Self Monitoring and Analysis Reporting Technology)
• Support security feature
• Quiet Seek mode (AAM)
• 48-bit addressing feature

Deskstar 7K250 Hard Disk Drive Specification
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