Hitachi Deskstar T7K250, HDT722516DLAT80, HDT722516DLA380, HDT722525DLAT80, HDT722525DLA380 Specifications
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Hard Disk Drive Specification
Deskstar T7K250
3.5 inch Ultra ATA/133 hard disk drive
3.5 inch Serial ATA hard disk drive
Models:
HDT722516DLAT80 HDT722516DLA380
HDT722525DLAT80 HDT722525DLA380
HDT722520DLAT80 HDT722520DLA380
Version 1.8 12 September 2006
Hard Disk Drive Specification
Deskstar T7K250
3.5 inch Ultra ATA/133 hard disk drive
3.5 inch Serial ATA hard disk drive
Models:
HDT722516DLAT80 HDT722516DLA380
HDT722525DLAT80 HDT722525DLA380
HDT722520DLAT80 HDT722520DLA380
Version 1.8 12 September 2006
1st Edition (Revision 0.1) (25 January 2005) Preliminary
2nd Edition (Revision 1.0) (27 January 2005) Revised
3rd Edition (Revision 1.1) (20 May 2005) Revised
4th Edition (Revision 1.2) (02 June 2005) Revised
5th Edition (Revision 1.3) (14 June 2005) Revised
6th Edition (Revision 1.4)(22 June 2005) Revised
7th Edition (Revision 1.5)(21 September 2005) Revised
8th Edition (Revision 1.6) (10 November 2005) Revised
9th Edition (Revision 1.7)(04 May 2006) Revised
10th Edition (Revision 1.8)( 12 September 2006) 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.................................................................................................11
4.3 World Wide Name Assignment...............................................................12
4.4 Drive organization ...................................................................................13
4.4.1 Drive format....................................................................................13
4.4.2 Cylinder allocation..........................................................................13
4.5 Performance characteristics.....................................................................15
4.5.1 Command overhead........................................................................15
4.5.2 Mechanical positioning...................................................................15
4.5.3 Drive ready time .............................................................................17
4.5.4 Data transfer speed..........................................................................18
4.5.5 Throughput......................................................................................19
4.5.6 Operating modes.............................................................................20
5.0 Defect flagging strategy.....................................................................................21
6.0 Electrical interface specification.......................................................................23
6.1 Connector location...................................................................................23
6.1.1 DC power connector.......................................................................24
6.1.2 AT signal connector........................................................................24
6.2 Signal definitions(PATA model).............................................................25
6.3 Signal descriptions...................................................................................26
6.4 Interface logic signal levels(PATA model) .............................................29
6.5 Signal definition (SATA model)..............................................................29
6.5.1 TX+ / TX-.......................................................................................30
6.5.2 RX+ / RX-.......................................................................................30
6.6 Out of band signaling (SATA model)......................................................30
6.7 Reset timings............................................................................................31
6.8 PIO timings..............................................................................................32
6.8.1 Write DRQ interval time.................................................................32
6.8.2 Read DRQ interval time .................................................................33
6.9 Multi word DMA timings........................................................................34
6.10 Ultra DMA timings................................................................................35
6.10.1 Initiating Read DMA ....................................................................35
6.10.2 Host Pausing Read DMA..............................................................36
6.10.3 Host Terminating Read DMA.......................................................37
6.10.4 Device Terminating Read DMA...................................................38
6.10.5 Initiating Write DMA ...................................................................39
6.10.6 Device Pausing Write DMA.........................................................40
6.10.7 Device Terminating Write DMA..................................................41
6.10.8 Host Terminating Write DMA......................................................42
6.11 Addressing of registers ..........................................................................43
6.11.1 Cabling..........................................................................................43
7.0 Specification .......................................................................................................47
7.1 Jumper settings ........................................................................................47
7.1.1 Jumper pin location.........................................................................47
7.1.2 Jumper pin identification ................................................................47
7.1.3 Jumper pin assignment....................................................................48
7.1.4 Jumper positions .............................................................................49
7.2 Environment.............................................................................................53
7.2.1 Temperature and humidity..............................................................53
7.2.2 Corrosion test..................................................................................54
7.3 DC power requirements...........................................................................54
7.3.1 Input voltage ...................................................................................54
7.3.2 Power supply current (typical)........................................................55
7.3.3 Power supply generated ripple at drive power connector...............56
7.4 Reliability.................................................................................................57
7.4.1 Data integrity ..................................................................................57
7.4.2 Cable noise interference..................................................................57
7.4.3 Start/stop cycles..............................................................................57
7.4.4 Preventive maintenance..................................................................57
7.4.5 Data reliability ................................................................................57
7.4.6 Required power-off sequence.........................................................57
7.5 Mechanical specifications........................................................................58
7.5.1 Physical dimensions and weight.....................................................58
7.5.2 Mounting hole locations .................................................................59
7.5.3 Connector locations ........................................................................60
7.5.4 Drive mounting...............................................................................60
7.5.5 Heads unload and actuator lock......................................................61
7.6 Vibration and shock.................................................................................62
7.6.1 Operating vibration.........................................................................62
7.6.2 Nonoperating vibration...................................................................62
7.6.3 Operating shock..............................................................................63
7.6.4 Nonoperating shock........................................................................63
7.6.5 Nonoperating rotational shock........................................................64
7.7 Acoustics..................................................................................................65
7.8 Identification labels..................................................................................65
7.9 Safety .......................................................................................................66
7.9.1 UL and CSA approval.....................................................................66
7.9.2 German safety mark........................................................................66
7.9.3 Flammability...................................................................................66
7.9.4 Safe handling ..................................................................................66
7.9.5 Environment....................................................................................66
7.9.6 Secondary circuit protection...........................................................66
7.10 Electromagnetic compatibility...............................................................67
7.10.1 CE mark........................................................................................67
7.10.2 C-TICK mark................................................................................67
7.10.3 BSMI mark ...................................................................................67
7.11 Packaging...............................................................................................67
8.0 General................................................................................................................69
8.1 Introduction..............................................................................................69
8.2 Terminology.............................................................................................69
8.3 Deviations from standard.........................................................................69
9.0 Registers..............................................................................................................71
9.1 Register set...............................................................................................71
9.2 Alternate Status Register .........................................................................72
9.3 Command Register ..................................................................................72
9.4 Cylinder High Register............................................................................72
9.5 Cylinder Low Register.............................................................................72
9.6 Data Register............................................................................................73
9.7 Device Control Register..........................................................................73
9.8 Drive Address Register............................................................................74
9.9 Device/Head Register ..............................................................................74
9.10 Error Register.........................................................................................75
9.11 Features Register....................................................................................75
9.12 Sector Count Register............................................................................75
9.13 Sector Number Register.........................................................................76
9.14 Status Register .......................................................................................76
10.0 General operation............................................................................................79
10.1 Reset response........................................................................................79
10.2 Register initialization.............................................................................80
10.3 Diagnostic and Reset considerations .....................................................81
10.4 Sector Addressing Mode........................................................................82
10.4.1 Logical CHS addressing mode .....................................................82
10.4.2 LBA addressing mode ..................................................................82
10.5 Overlapped and queued feature .............................................................82
10.6 Power management features..................................................................84
10.6.1 Power mode ..................................................................................84
10.6.2 Power management commands ....................................................84
10.6.3 Standby timer................................................................................84
10.6.4 Interface capability for power modes ...........................................85
10.7 S.M.A.R.T. Function .............................................................................86
10.7.1 Attributes ......................................................................................86
10.7.2 Attribute values.............................................................................86
10.7.3 Attribute thresholds.......................................................................86
10.7.4 Threshold exceeded condition ......................................................86
10.7.5 S.M.A.R.T. commands .................................................................86
10.7.6 Off-line read scanning ..................................................................86
10.7.7 Error log........................................................................................87
10.7.8 Self-test.........................................................................................87
10.8 Security Mode Feature Set.....................................................................88
10.8.1 Security mode ...............................................................................88
10.8.2 Security level ................................................................................88
10.8.3 Passwords......................................................................................89
10.8.4 Operation example........................................................................89
10.8.5 Command table.............................................................................92
10.9 Host Protected Area Feature..................................................................93
10.9.1 Example for operation (In LBA Mode)........................................93
10.9.2 Security extensions .......................................................................94
10.10 Seek overlap.........................................................................................95
10.11 Write cache function............................................................................96
10.12 Reassign function.................................................................................97
10.12.1 Auto Reassign function...............................................................97
10.13 Power-Up in Standby feature set .........................................................98
10.14 Advanced Power Management feature set (APM) ..............................99
10.15 Automatic Acoustic Management feature set (AAM).........................100
10.16 Address Offset Feature ........................................................................101
10.16.1 Enable/Disable Address Offset Mode.........................................101
10.16.2 Identify Device Data...................................................................102
10.16.3 Exceptions in Address Offset Mode..........................................102
10.17 48-bit Address Feature Set...................................................................103
10.18 Streaming Feature Set..........................................................................103
10.18.1 Streaming commands..................................................................104
11.0 Command protocol ..........................................................................................107
11.1 PIO Data In commands..........................................................................107
11.2 PIO Data Out Commands ......................................................................108
11.3 Non-data commands .............................................................................110
11.4 DMA commands....................................................................................111
11.5 DMA queued commands .......................................................................112
12.0 Command descriptions....................................................................................113
12.1 Check Power Mode (E5h/98h) ..............................................................117
12.2 Device Configuration Overlay (B1h) ....................................................118
12.2.1 DEVICE CONFIGURATION RESTORE..................................118
12.2.2 DEVICE CONFIGURATION FREEZE LOCK (subcommand C1h)118
12.2.3 DEVICE CONFIGURATION IDENTIFY (subcommand C2h).119
12.2.4 DEVICE CONFIGURATION SET (subcommand C3h).............119
12.3 Execute Device Diagnostic (90h) ..........................................................122
12.4 Flush Cache (E7h) .................................................................................123
12.5 Flush Cache Ext (EAh)..........................................................................124
12.6 Format Track (50h)................................................................................125
12.7 Format Unit (F7h)..................................................................................126
12.8 Identify Device (ECh)............................................................................127
12.9 Idle (E3h/97h).......................................................................................135
12.10 Idle Immediate (E1h/95h)....................................................................136
12.11 Initialize Device Parameters (91h) ......................................................137
12.12 NOP (00h)............................................................................................138
12.13 Read Buffer (E4h)................................................................................139
12.14 Read DMA (C8h/C9h).........................................................................140
12.15 Read DMA Ext (25h)...........................................................................142
12.16 Read DMA Queued (C7h)...................................................................144
12.17 Read DMA Queued Ext (26h) .............................................................146
12.18 Read Log Ext (2Fh) .............................................................................148
12.18.1 General Purpose Log Directory..................................................149
12.18.2 Extended Comprehensive SMART Error Log............................150
12.18.3 Extended Self-test log sector ......................................................152
12.19 Read Long (22h/23h)...........................................................................154
12.20 Read Multiple (C4h)............................................................................156
12.21 Read Multiple Ext (29h) ......................................................................158
12.22 Read Native Max ADDRESS (F8h)....................................................160
12.23 Read Native Max Address Ext (27h)...................................................161
12.24 Read Sectors (20h/21h)........................................................................162
12.25 Read Sector(s) Ext (24h)......................................................................164
12.26 Read Stream DMA Ext (2Ah) .............................................................166
12.27 Read Stream PIO (2Bh).......................................................................169
12.28 Read Verify Sectors (40h/41h) ............................................................172
12.29 Read Verify Sector(s) (42h).................................................................174
12.30 Recalibrate (1xh)..................................................................................176
12.31 Security Disable Password (F6h).........................................................177
12.32 Security Disable Password (F3h).........................................................178
12.33 Security Erase Unit (F4h) ....................................................................179
12.34 Security Freeze Lock (F5h) .................................................................181
12.35 Security Set Password (F1h)................................................................182
12.36 Security Unlock (F2h) .........................................................................184
12.37 Seek (7xh)...........................................................................................185
12.38 Service (A2h ........................................................................................)186
12.39 Set Features (EFh) ...............................................................................187
12.39.1 Set Transfer mode.......................................................................188
12.39.2 Write Cache ................................................................................188
12.39.3 Advanced Power Management...................................................188
12.39.4 Automatic Acoustic Management ..............................................189
12.40 Set Max ADDRESS (F9h)...................................................................190
12.40.1 Set Max Set Password (Feature=01h).........................................192
12.40.2 Set Max Lock (Feature=02h)......................................................193
12.40.3 Set Max Unlock (Feature = 03h) ................................................194
12.40.4 Set Max Freeze Lock (Feature = 04h) ........................................195
12.41 Set Max Address Ext (37h)..................................................................196
12.42 Sleep (E6h/99h) ...................................................................................198
12.43 S.M.A.R.T. Function Set (B0h)...........................................................199
12.43.1 S.M.A.R.T. Function Subcommands.........................................199
12.43.2 Device Attribute Data Structure .................................................203
12.43.3 Device Attribute Thresholds data structure ................................206
12.43.4 S.M.A.R.T. Log Directory..........................................................208
12.43.5 S.M.A.R.T. summary error log sector ........................................208
12.43.6 Self-test log data structure .........................................................210
12.43.7 Error reporting ............................................................................211
12.44 Standby (E2h/96h)...............................................................................212
12.45 Standby Immediate (E0h/94h).............................................................213
12.46 Write Buffer (E8h)...............................................................................214
12.47 Write DMA Queued (CAh/CBh).........................................................215
12.48 Write DMA FUA Ext (3Dh)................................................................217
12.49 Write DMA Ext (35h)..........................................................................219
12.50 Write FPDMA Queued (61h) ..............................................................221
12.51 Write Log Ext (3Fh) ............................................................................223
12.52 Write Long (32h/33h)..........................................................................224
12.53 Write Multiple (C5h) ...........................................................................226
12.54 Write Multiple Ext (39h) .....................................................................227
12.55 Write Multiple FUA Ext (CEh) ...........................................................229
12.56 Write Sectors (30h/31h).......................................................................231
12.57 Write Sector(s) (34h) ...........................................................................233
12.58 Write Stream DMA (3Ah)...................................................................235
12.59 Write Stream PIO (3Bh) ......................................................................238
13.0 Time-out values................................................................................................241
List of Tables
Table 1.Mechanical positioning performance ...........................................................11
Table 2.Cylinder allocation........................................................................................13
Table 3.Command overhead......................................................................................15
Table 4.Mechanical positioning performance ...........................................................15
Table 5.Full stroke seek time.....................................................................................16
Table 6.Head switch time ..........................................................................................16
Table 7.Single track seek time...................................................................................17
Table 8.Latency Time................................................................................................17
Table 9.Drive ready time ...........................................................................................17
Table 10.Data transfer speed .....................................................................................18
Table 11.Simple Sequential Access performance......................................................19
Table 12.Random Access Performance.....................................................................19
Table 13.Description of operating modes..................................................................20
Table 14.Mode transition time...................................................................................20
Table 15.Plist physical format ...................................................................................21
Table 16.Signal definitions........................................................................................25
Table 17.Special signal definitions for Ultra DMA...................................................26
Table 18.System reset timing chart............................................................................31
Table 19.System reset timing.....................................................................................31
Table 20.Ultra DMA cycle timing chart (Host pausing Read)..................................36
Table 21.Ultra DMA cycle timings (Host pausing Read) .........................................36
Table 22.Ultra DMA cycle timing chart (Host terminating Read)............................37
Table 23.Ultra DMA cycle timings (Host Terminating Read)..................................37
Table 24.Ultra DMA cycle timing chart (Device terminating Read) ........................38
Table 25.Ultra DMA cycle timings (Device Terminating Read) ..............................38
Table 26.Ultra DMA cycle timing chart (Initiating Write) .......................................39
Table 27.Ultra DMA cycle timings (Initiating Write)...............................................39
Table 28.Ultra DMA cycle timing chart (Device Pausing Write).............................40
Table 29.Ultra DMA cycle timing chart (Device Pausing Write).............................40
Table 30.Ultra DMA cycle timing chart (Device Terminating Write)......................41
Table 31.Ultra DMA cycle timings (Device terminating Write)...............................41
Table 32.Ultra DMA cycle timing chart (Host Terminating Write)..........................42
Table 33.Ultra DMA cycle timings (Host Terminating Write) .................................42
Table 34.I/O address map..........................................................................................43
Table 35.Temperature and humidity..........................................................................53
Table 36.Input voltage...............................................................................................54
Table 37.Power supply current of xxx-GB models ...................................................55
Table 38.Power supply generated ripple at drive power connector...........................56
Table 39.Random vibration PSD profile break points (operating)............................62
Table 40.Random Vibration PSD profile breakpoints (nonoperating)......................62
Table 41.Sinusoidal shock wave ................................................................................64
Table 42.Rotational shock .......................................................................................64
Table 43.Sound power levels.....................................................................................65
Table 44.Sound power levels.....................................................................................65
Table 45.Register Set.................................................................................................71
Table 46.Alternate Status Register ............................................................................72
Table 47.Device Control Register .............................................................................73
Table 48.Drive Address Register...............................................................................74
Table 49.Device Head/Register.................................................................................74
Table 50.Error Register..............................................................................................75
Table 51.Status Register ............................................................................................76
Table 52.Reset response table....................................................................................79
Table 53.Default Register Values..............................................................................80
Table 54.Diagnostic codes.........................................................................................80
Table 55.Reset error register values ..........................................................................81
Table 56.Power conditions ........................................................................................85
Table 57.Command table for device lock operation..................................................92
Table 58.Command Set (1 of 2).................................................................................113
Table 59.Command Set (2 of 2).................................................................................114
Table 60.Command Set (subcommand).....................................................................115
Table 61.Check Power Mode command (E5h/98h)...................................................117
Table 62.Check Power Mode Command (E5h/98h)..................................................118
Table 63.Device Configuration Overlay Features register values.............................118
Table 64.Device Configuration Overlay Data structure............................................120
Table 65.DCO error information definition...............................................................121
Table 66.Execute Device Diagnostic command (90h) ..............................................122
Table 67.Flush Cache command (E7h)......................................................................123
Table 68.Flush Cache Ext Command (EAh) .............................................................124
Table 69.Format Track command (50h)....................................................................125
Table 70.Format Unit command (F7h)......................................................................126
Table 71.Identify Device command (ECh)................................................................127
Table 72.Identify device information (Part 1 of 7)....................................................128
Table 73.Identify device information (Part 2 of 7)...................................................129
Table 74.Identify device information (Part 3 of 7)....................................................130
Table 75.Identify device information (Part 4 of 7)....................................................131
Table 76.Identify device information (Part 5 of 7 .....................................................132
Table 77.Identify device information (Part 6 of 7)....................................................133
Table 78.Identify device information (Part 7 of 7)....................................................134
Table 79.Idle command (E3h/97h)............................................................................135
Table 80.Idle Immediate command (E1h/95h)..........................................................136
Table 81.Initialize Device Parameters command (91h).............................................137
Table 82.NOP Command (00h).................................................................................138
Table 83.Read Buffer (E4h).......................................................................................139
Table 84.Read DMA command (C8h/C9h)...............................................................140
Table 85.Read DMA Ext Command (25h)................................................................142
Table 86.Read DMA command (C8h/C9h)...............................................................144
Table 87.Read DMA Ext Command (25h)................................................................146
Table 88.Read Log Ext Command (2Fh)...................................................................148
Table 89.Log Address Definition ..............................................................................149
Table 90.General Purpose Log Directory..................................................................149
Table 91.Extended Comprehensive SMART Error Log ...........................................150
Table 92.Extended Error log data structure...............................................................150
Table 93.Command data structure.............................................................................151
Table 94.Error data structure .....................................................................................151
Table 95.Read Long (22h/23h)..................................................................................154
Table 96.Read Multiple (C4h)...................................................................................156
Table 97.Read DMA Ext Command (25h)................................................................158
Table 98.Read Native Max ADDRESS (F8h)...........................................................160
Table 99.Read Native Max Address Ext command (27h).........................................161
Table 100.Read Sectors Command (20h/21h)...........................................................162
Table 101.Read Sector(s) Ext command (24h).........................................................164
Table 102.Read Verify Sectors (40h/41h).................................................................172
Table 103.Read Verify Sector(s) command (42h).....................................................174
Table 104.Recalibrate (1xh) ......................................................................................176
Table 105.Security Disable Password (F6h)..............................................................177
Table 106.Password Information for Security Disable Password command.............177
Table 107.Security Disable Password (F3h)..............................................................178
Table 108.Security Erase Unit (F4h).........................................................................179
Table 109.Erase Unit information .............................................................................179
Table 110.Security Freeze Lock command (F5h) .....................................................181
Table 111.Security Set Password command (F1h)....................................................182
Table 112.Security Set Password Information ..........................................................182
Table 113.Security Unlock command (F2h)..............................................................184
Table 114.Seek command (7xh)................................................................................185
Table 115.Service command (A2h)...........................................................................186
Table 116.Set Features command (EFh)....................................................................187
Table 117.Set Max ADDRESS command (F9h).......................................................190
Table 118.Set Max Set Password command..............................................................192
Table 119.Set Max Set Password data contents ........................................................192
Table 120.Set Max Lock command...........................................................................193
Table 121.Set Max Unlock command (F9h) .............................................................194
Table 122.Set Max Freeze Lock (F9h)......................................................................195
Table 123.Set Max Address Ext command (37h)......................................................196
Table 124.Sleep command (E6h/99h) .......................................................................198
Table 125.S.M.A.R.T. Function Set command (B0h)...............................................199
Table 126.Device Attribute Data Structure ...............................................................203
Table 127.Individual Attribute Data Structure ..........................................................203
Table 128.Device Attribute Thresholds Data Structure.............................................207
Table 129.Individual Threshold Data Structure ........................................................207
Table 130.S.M.A.R.T. Log Directory........................................................................208
Table 131.S.M.A.R.T. summary error log sector ....................................................208
Table 132.Error log data structure............................................................................209
Table 133.Command data structure...........................................................................209
Table 134.Error data structure ...................................................................................209
Table 135.Self-test log data structure ........................................................................210
Table 136.S.M.A.R.T. Error Codes...........................................................................211
Table 137.Standby (E2h/96h)....................................................................................212
Table 138.Standby Immediate (E0h/94h)..................................................................213
Table 139.Write Buffer (E8h)....................................................................................214
Table 140.Write DMA Queued Command CAh/CBh) .............................................215
Table 141.Write Sectors command (30h/31h)...........................................................231
Table 142.Write Sector(s) Command (34h) .............................................................233
1.0 General
1.1 Introduction
This document describes the specifications of the Deskstar T7K250, a 3.5-inch hard disk drive with ATA interface
and a rotational speed of 7200 RPM.
HDT722516DLAT80 160.0 GB
HDT722520DLAT80 200 GB
HDT722525DLAT80 250.0 GB
HDT722516DLA380 160.0 GB (3Gbps*)
HDT722520DLA380 200 GB (3Gbps*)
HDT722525DLA380 250.0 GB (3Gbps*)
*Default setting is 1.5Gbps
These specifications are subject to change without notice.
1.2 References
• Information Technology - AT Attachment with Packet Interface-7.
• Serial ATA II: Extensions to Serial ATA 1.0
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 Laborato ry
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 E lectrostatic Discharge
Deskstar T7K250 Hard Disk Drive Specification
1
FCC Federal Com munications Commission
FRU field replacement unit
G gravity (a unit of force)
2
G
/Hz (32 ft/sec)2 per 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 mea n square
RPM revolu t ions per minute
RST reset
Deskstar T7K250 Hard Disk Drive Specification
2
R/W read/write
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.
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2.0 General features of the drive
• Formatted capacities of 160 GB, 200 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 8.2 ms typical without Command 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
• Parallel ATA PIO Register/Data Transfer Mode 4 (16.6 MB/sec)
• Parallel ATA DMA Data Transfer
• Multiword mode Mode 2 (16.6 MB/s)
• Ultra DMA Mode 6 (133 MB/s)
• Serial ATA Data Transfer 3Gbps/1.5Gbps
• 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
• ATA -7 co mpliant
• UDMA 133 support
• Streaming feature set support
• World Wide Name
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Part 1. Functional specification
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3.0 Fixed-disk subsystem description
3.1 Control electronics
The drive is electronically controlled by a microprocessor, several logic modules, digital/analog modules, and various drivers and receivers. The control electronics performs the following major functions:
• Controls and interprets all interface signals between the host controller and the drive.
• Controls read write accessing of the disk media, including defect management and error
recovery.
• Controls starting, stopping, and monitoring of the spindle.
• Conducts a power-up sequence and calibrates the servo.
• Analyzes servo signals to provide closed loop control. These include position error signal and
estimated velocity.
• Monitors the actuator position and determines the target track for a seek operation.
• Controls the voice coil motor driver to align the actuator in a desired position.
• Constantly monitors error conditions of the servo and takes corresponding action if an error
occurs.
• Monitors various timers such as head settle and servo failure.
• Performs self-checkout (diagnostics).
3.2 Head disk assembly
The head disk assembly (HDA) is assembled in a clean room environment and contains the disks and actuator
assembly. Air is constantly circulated and filtered when the drive is operational. Venting of the HDA is accomplished via a breather filter.
The spindle is driven directly by an in-hub, brushless, sensorless DC drive motor. Dynamic braking is used to
quickly stop the spindle.
3.3 Actuator
The read/write heads are mounted in the actuator. The actuator is a swing-arm assembly driven by a voice coil
motor . A closed-loop position ing servo controls the movement of the actuator. An embedded servo pattern supplies
feedback to the positioning servo to keep the read/write heads centered over the desired track.
The actuator assembly is balanced to allow vertical or horizontal mounting without adjustment.
When the drive is powered off, the actuator automatically moves the head to the actuator ramp outside of the disk
where it parks.
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4.0 Drive characteristics
4.1 Default logical drive parameters
HDT722516DLxxxx HDT722525DLx xxx HDT722520DLxxxx
Physical Layout
Label capacity (GB) 160 250 200
Bytes per sector 512 512 512
Sectors per track 594-1242 630-1296 594-1242
Number of heads 3 4 4
Number of disks 2 2 2
Data sectors per cylinder 1782-3726 2520-5184 2376-4968
Data cylinders per zone 601-7060 1810-8341 500-6500
Logical layout
Number of heads 16 16 16
Number of Sectors per track 63 63 63
Number of Cylinders
Number of sectors 321,672,960 488,397,168 390,721,968
Total logical data bytes 164,696,555,520 250,059,350,016 200,049,647,616
Notes:
1.
Number of cylinders: For drives with capacities greater than 8.45 GB the Identify Device information word 01 limits the
number of cylinders to 16, 383 per the ATA specification.
1
2
16,383 16,383 16, 383
2.
Logical layout: Logical layout is an imaginary drive parameter (that is, the number of heads) which is used to access the
drive from the system interface. The logical layout to Physical layout (that is, the actual Head and Sectors ) translation is done
automatically in the drive. The default setting can be obtained by issuing an IDENTIFY DEVICE command.
4.2 Data sheet
Table 1: Mechanical positioning performance
Description 250 GB Model 200 GB Model 160 GB Model
Data transfer rates (Mbps) 843.2 807.8 807.8
Interface transfer rates (Mb/s) 133 133 133
Data buffer size
1
(KB)
Rotational speed (RPM) 7200 7200 7200
Number of buffer segments (read) up to 128 up to 128 up to 128
Number of buffer segments (write) up to 63 up to 63 up to 63
Recording density - max (Kbpi) 767.7 718.8 712.4
Track density [TPI] 120 110 114
Areal density - max (Gbits/in
2
)
Number of data bands 30 30 30
8192 8192 8192
92.1 79.1 81.21
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4.3 World Wide Name Assignment
Description 200 GB, 250 GB 160 GB
Organization Hitachi GST
Manufacturing Site Sriracha Plant Thailand\
Hitachi Global Storage Products (Shenzen)Co.Ltd., China
Product Deskstar T7K250
OUI 000CCAh
SHBU Block Assignment -Thailand
-China
Port/Node ID 11b
20Bh
307h
205h
306h
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4.4 Drive organization
4.4.1 Drive format
Upon shipment from manufacturing the drive satisfies the sector continuity in the physical format by means of the
defect flagging strategy described in Section 5.0, “Defect flagging strategy” on page 21 in order to provide the
maximum performance to users.
4.4.2 Cylinder allocation
Table 2: Cylinder allocation
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Physical cylinder is calculated from the starting data track of 0. It is not relevant to logical
CHS. Depending on the capacity some of the inner zone cylinders are not allocated.
Data cylinder
This cylinder contains the user data which can be sent and retrieved via read/write commands and a spare area for
reassigned data.
Spare cylinder
The spare cylinder is used by Hitachi Global Storage Technologies manufacturing and includes data sent from a
defect location.
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4.5 Performance characteristics
Drive performance is characterized by the following parameters:
• Command overhead
• Mechanical head positioning
- Seek time
- Latency
• Data transfer speed
• Buffering operation (Look ahead/Write cache)
All the above parameters contribute to drive performance. There are other parameters that contribute to the performance of the actual system. This specification tries to define the bare drive characteristics, not system throughput,
which depends on the system and the application.
4.5.1 Command overhead
Command overhead is defined as the time required from the time the command is written into the command register by a host to the assertion of DRQ for the first data byte of a READ command when the requested data is not in
the buffer excluding Physical seek time and Latency.
The table below gives average command overhead.
Table 3: Command overhead
Command type (Drive is in quiescent state) Time (typical)
(ms)
Read (cache not hit) (from Command Write to Seek Start)
Read (cache hit) (from Command Write to DRQ)
Write (from Command Write to DRQ)
Seek (from Command Write to Seek Start)
0.3 0.3
0.1 0.2
0.015 0.2
0.3 not applicable
4.5.2 Mechanical positioning
4.5.2.1 Average seek time (including settling)
Table 4: Mechanical positioning performance
Command type Typical (ms) Max (ms)
Read 8.2 9.2
Write 9.2 10.2
Read (Quiet Seek mode) 19.5 20.5
Write (Quiet Seek mode) 20.5 21.5
Time (typical) for
queued command
(ms)
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The terms “Typical” and “Max” are used throughout this document and are defined as follows:
Typical The average of the drive population tested at nominal environmental and voltage conditions.
Max Maximum value measured on any one drive over the full range of the environmental and voltage
conditions. (See Section 6.2, “Environment” on page 27 and Section 6.3, “DC power requirements” on page 29 for ranges.)
The seek time is measured from the start of the actuato r’s motion to the start of a reliabl e read or write operation. A
reliable read or write implies that error correction or recovery is not used to correct arrival problems. The average
seek time is measured as the weighted average of all possible seek combinations.
max
Σ (m10 n)(Tnin + Tnout)
n=1
Weighted Average = ––––––––––––––––––––––––––––
(max + 1)(max)
where
max = Maximum seek length
n= Seek length (1 to max)
Tnin = Inward measured seek time for an n track seek
Tnout = Outward measured seek time for an n track seek
4.5.2.2 Full stroke seek time (without command overhead, including settling)
Table 5: Full stroke seek time
Function Typical (ms) Max (ms)
Read 14.7 17.7
Write 15.7 18.7
Read (Quiet Seek mode) 32.5 35.5
Write (Quiet Seek mode) 33.5 36.5
Full stroke seek is measured as the average of 1,000 full stroke seeks with a random head switch from both directions (inward and outward).
4.5.2.3 Head switch time (head skew)
Table 6: Head switch time
Head switch time-typical (ms)
1.4
Head switch time is defined as the amount of time required by the fixed disk to complete a seek of the next sequential track after reading the last sector in the current track
The measuring method is given in 4.5.5, “Throughput” on page 19.
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