Hitachi Travelstar 7K320 User manual

7K320 SATA OEM Specification
Page 1 of 176
Hitachi Global Storage Technologies
Hard Disk Drive Specification
Hitachi Travelstar 7K320
2.5 inch SATA hard disk drive
Models: HTS723232L9A360, HTS723232L9SA60
HTS723225L9A360, HTS723225L9SA60
HTS723216L9A360, HTS723216L9SA60
HTS723212L9A360, HTS723212L9SA60
HTS723280L9A360, HTS723280L9SA60
Revision 1.6 9 Apr., 2010

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Initial release (Revision 1.0) (23 May 2008)
Revised (Revision 1.1) (08 August 2008)
Revised (Revision 1.2) (08 September 2008)
Revised (Revision 1.3) (30 October 2008)
Revised (Revision 1.4) (17 August 2009)
Revised (Revision 1.5) (08 December 2009)
Revised (Revision 1.6) (09 April 2010)
The following paragraph does not apply to the United Kingdom or any country where such
provisions are inconsistent with local law: HITACHI GLOBAL STORAGE TECHNOLOGIES
PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow
disclaimer or express or implied warranties in certain transactions, therefore, this statement may
not apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are
periodically made to the information herein; these changes will be incorporated in new editions of
the publication. Hitachi may make improvements or changes in any products or programs described
in this publication at any time.
It is possible that this publication may contain reference to, or information about, Hitachi products
(machines and programs), programming, or services that are not announced in your country. Such
references or information must not be construed to mean that Hitachi intends to announce such
Hitachi products, programming, or services in your country.
Technical information about this product is available by contacting your local Hitachi Global Storage
Technologies representative or on the Internet at http://www.hitachigst.com
Hitachi Global Storage Technologies may have patents or pending patent applications covering
subject matter in this document. The furnishing of this document does not give you any license to
these patents.
©Copyright Hitachi Global Storage Technologies
Note to U.S. Government Users —Documentation related to restricted rights —Use, duplication or
disclosure is subject to restrictions set forth in GSA ADP Schedule Contract with Hitachi Global
Storage Technologies.

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Table of Contents
GENERAL.................................................................................................................................................9
1INTRODUCTION .......................................................................................................................................9
1.1 Abbreviations.............................................................................................................................9
References ...........................................................................................................................................12
1.2 General caution .......................................................................................................................12
1.3 Drive handling precautions ....................................................................................................12
2OUTLINE OF THE DRIVE.........................................................................................................................13
PART 1 FUNCTIONAL SPECIFICATION ...........................................................................................14
3FIXED DISK SUBSYSTEM DESCRIPTION ..................................................................................................15
3.1 Control Electronics ..................................................................................................................15
3.2 Head disk assembly data ........................................................................................................15
4FIXED DISK CHARACTERISTICS ..............................................................................................................16
4.1 Formatted capacity by model number....................................................................................16
4.2 Data sheet ................................................................................................................................17
4.3 Cylinder allocation ..................................................................................................................17
4.4 Performance characteristics ...................................................................................................18
5DATA INTEGRITY ...................................................................................................................................22
5.1 Data loss on power off .............................................................................................................22
5.2 Write Cache .............................................................................................................................22
5.3 Equipment status ....................................................................................................................22
5.4 WRITE safety...........................................................................................................................22
5.5 Data buffer test........................................................................................................................23
5.6 Error recovery..........................................................................................................................23
5.7 Automatic reallocation ............................................................................................................23
5.8 ECC ..........................................................................................................................................24
6SPECIFICATION .....................................................................................................................................25
6.1 Environment ............................................................................................................................25
6.2 DC power requirements ..........................................................................................................27
6.3 Reliability.................................................................................................................................29
6.4 Mechanical specifications........................................................................................................32
6.5 Vibration and shock.................................................................................................................34
6.6 Acoustics...................................................................................................................................36
6.7 Identification labels.................................................................................................................37
6.8 Electromagnetic compatibility................................................................................................37
6.9 Safety........................................................................................................................................38
6.10 Packaging.................................................................................................................................38
6.11 Substance restriction requirements .......................................................................................38
7ELECTRICAL INTERFACE SPECIFICATIONS ............................................................................................39
7.1 Cabling .....................................................................................................................................39
7.2 Interface connector ..................................................................................................................39
7.3 Signal definitions.....................................................................................................................40
PART 2 INTERFACE SPECIFICATION...............................................................................................42
8GENERAL ..............................................................................................................................................43
8.1 Introduction .............................................................................................................................43
8.2 Terminology .............................................................................................................................43
9DEVIATIONS FROM STANDARD ..............................................................................................................44
10 PHYSICAL INTERFACE .........................................................................................................................44
11 REGISTERS ..........................................................................................................................................44
11.1 Register naming convention ...................................................................................................45
11.2 Command register ...................................................................................................................45
11.3 Device Control Register...........................................................................................................45
11.4 Device Register ........................................................................................................................46
11.5 Error Register ..........................................................................................................................46

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11.6 Features Register ....................................................................................................................46
11.7 LBA High Register ..................................................................................................................47
11.8 LBA Low Register....................................................................................................................47
11.9 LBA Mid Register....................................................................................................................47
11.10 Sector Count Register..........................................................................................................47
11.11 Status Register.....................................................................................................................47
12 GENERAL OPERATION DESCRIPTIONS ................................................................................................49
12.1 Reset Response ........................................................................................................................49
12.2 Diagnostic and Reset considerations......................................................................................50
12.3 Power-off considerations .........................................................................................................51
12.4 Sector Addressing Mode..........................................................................................................52
12.5 Power Management Feature ..................................................................................................52
12.6 Advanced Power Management (Adaptive Battery Life Extender 3) Feature......................54
12.7 Interface Power Management Mode (Slumber and Partial).................................................55
12.8 S.M.A.R.T. Function................................................................................................................55
12.9 Security Mode Feature Set .....................................................................................................56
12.10 Protected Area Function......................................................................................................62
12.11 Seek Overlap ........................................................................................................................65
12.12 Write Cache Function..........................................................................................................65
12.13 Reassign Function................................................................................................................66
12.14 48-bit Address Feature Set..................................................................................................66
12.15 Software Setting Preservation Feature Set .......................................................................67
12.16 Native Command Queuing..................................................................................................68
12.17 SMART Command Transport (SCT)...................................................................................68
13 COMMAND PROTOCOL.........................................................................................................................69
13.1 Data In Commands .................................................................................................................69
13.2 Data Out Commands...............................................................................................................69
13.3 Non-Data Commands ..............................................................................................................70
13.4 DMA Data Transfer Commands.............................................................................................71
13.5 First-parity DMA Commands.................................................................................................71
14 COMMAND DESCRIPTIONS ..................................................................................................................72
14.1 Check Power Mode (E5h/98h).................................................................................................76
14.2 Device Configuration Overlay (B1h) ......................................................................................77
14.3 Download Microcode (92h) ......................................................................................................81
14.4 Execute Device Diagnostic (90h) ............................................................................................83
14.5 Flush Cache (E7h) ...................................................................................................................84
14.6 Flush Cache Ext (EAh)............................................................................................................85
14.7 Format Track (50h: Vendor Specific) .....................................................................................86
14.8 Format Unit (F7h: Vendor Specific).......................................................................................87
14.9 Identify Device (ECh) ..............................................................................................................88
14.10 Idle (E3h/97h).....................................................................................................................101
14.11 Idle Immediate (E1h/95h) .................................................................................................102
14.12 Initialize Device Parameters (91h) ...................................................................................103
14.13 Read Buffer (E4h) ..............................................................................................................104
14.14 Read DMA(C8h/C9h) .........................................................................................................105
14.15 Read DMA Ext (25h)..........................................................................................................106
14.16 Read FPDMA Queued (60h)..............................................................................................107
14.17 Read Log Ext(2Fh).............................................................................................................108
14.18 Read Multiple (C4h)...........................................................................................................116
14.19 Read Multiple Ext (29h) ....................................................................................................117
14.20 Read Native Max Address (F8h).......................................................................................118
14.21 Read Native Max Address Ext (27h) ................................................................................119
14.22 Read Sector(s) (20h/21h)....................................................................................................120
14.23 Read Sector(s) Ext (24h)....................................................................................................121
14.24 Read Verify Sector(s) (40h/41h) ........................................................................................122
14.25 Read Verify Sector(s) Ext (42h).........................................................................................123
14.26 Recalibrate (1xh)................................................................................................................124
14.27 Security Disable Password (F6h)......................................................................................125
14.28 Security Erase Prepare (F3h) ...........................................................................................126

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14.29 Security Erase Unit (F4h) .................................................................................................127
14.30 Security Freeze Lock (F5h) ...............................................................................................129
14.31 Security Set Password (F1h).............................................................................................130
14.32 Security Unlock (F2h)........................................................................................................132
14.33 Seek (7xh) ...........................................................................................................................133
14.34 Sense Condition (F0h : vendor specific)............................................................................134
14.35 Set Features (EFh).............................................................................................................135
14.36 Set Max Address (F9h) ......................................................................................................137
14.37 Set Max Address Ext (37h)................................................................................................139
14.38 Set Multiple (C6h)..............................................................................................................141
14.39 Sleep (E6h/99h) ..................................................................................................................142
14.40 S.M.A.R.T Function Set (B0h) ..........................................................................................143
14.41 Standby (E2h/96h) .............................................................................................................159
14.42 Standby Immediate (E0h/94h) ..........................................................................................160
14.43 Write Buffer (E8h) .............................................................................................................161
14.44 Write DMA (CAh/CBh)......................................................................................................162
14.45 Write DMA Ext (35h).........................................................................................................163
14.46 Write DMA FUA Ext (3Dh)...............................................................................................164
14.47 Write FPDMA Queued (61h).............................................................................................165
14.48 Write Log Ext (3Fh)...........................................................................................................166
14.49 Write Multiple (C5h)..........................................................................................................167
14.50 Write Multiple Ext (39h) ...................................................................................................168
14.51 Write Multiple FUA Ext (CEh).........................................................................................169
14.52 Write Sector(s) (30h/31h)...................................................................................................170
14.53 Write Sector(s) Ext (34h)...................................................................................................171
14.54 Write Uncorrectable Ext (45h)..........................................................................................172
15 TIMINGS ............................................................................................................................................174
List of Figures
Figure 1. Limits of temperature and humidity 25
Figure 2. Mounting hole locations 32
Figure 3. Interface connector pin assignments 39
Figure 4. Parameter descriptions 41
Figure 5 Initial Setting 58
Figure 6 Usual Operation 59
Figure 7 Password Lost 60
Figure 8 Set Max security mode transition 65
Figure 9 Seek overlap 65
Figure 10 Selective self-test test span example 145
List of Tables
Table 1. Formatted capacity by model number. 16
Table 2. Data sheet 17
Table 3. Cylinder allocation 17
Table 4. Performance characteristics 18
Table 5. Mechanical positioning performance 19
Table 6. Full stroke seek time 19
Table 7. Single track seek time 19
Table 8. Latency time 19
Table 9. Drive ready time 20
Table 10. Operating mode 21
Table 11. Drive ready time 21
Table 12. Environmental condition 25
Table 13. Magnetic flux density limits 26
Table 14. DC Power requirements 27
Table 15. Power consumption efficiency 28
Table 16. Physical dimensions and weight 32

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Table 17. Random vibration PSD profile breakpoints (operating) 34
Table 18. Swept sine vibration 34
Table 19. Random Vibration PSD Profile Breakpoints (nonoperating) 35
Table 20. Operating shock 35
Table 21. Nonoperating shock 35
Table 22. Weighted sound power 36
Table 23. Interface connector pins and I/O signals 40
Table 24 Register naming convention and correspondence 45
Table 25 Device Control Register 45
Table 26 Device Register 46
Table 27 Error Register 46
Table 28 Status Register 47
Table 29 Reset Response Table 49
Table 30 Default Register Values 50
Table 31 Diagnostic Codes 50
Table 32 Reset error register values 50
Table 33 Device’s behavior by ATA commands 51
Table 34 Power conditions 53
Table 35 Command table for device lock operation 61
Table 36 Command table for device lock operation - continued 62
Table 37 Set Max Set Password data content 64
Table 38 Preserved Software Setting 68
Table 39 SCT Action Code Supported 68
Table 40 Command set 72
Table 41 Command Set - continued 73
Table 42 Command Set (Subcommand) 74
Table 43 Check Power Mode Command (E5h/98h) 76
Table 44 Device Configuration Overlay Command (B1h) 77
Table 45 Device Configuration Overlay Features register values 77
Table 46 Device Configuration Overlay Data structure 79
Table 47 DCO error information definition 80
Table 48 Download Command (92h) 81
Table 49 Execute Device Diagnostic Command (90h) 83
Table 50 Flush Cache Command (E7h) 84
Table 51 Flush Cache EXT Command (EAh) 85
Table 52 Format Track Command (50h) 86
Table 53 Format Unit Command (F7h) 87
Table 54 Identify Device Command (ECh) 88
Table 55 Identify device information 89
Table 56 Identify device information --- Continued --- 90
Table 57 Identify device information --- Continued --- 91
Table 58 Identify device information --- Continued --- 92
Table 59 Identify device information --- Continued --- 93
Table 60 Identify device information --- Continued --- 94
Table 61 Identify device information --- Continued --- 95
Table 62 Identify device information --- Continued --- 96
Table 63 Identify device information --- Continued --- 98
Table 64 Number of cylinders/heads/sectors by models for HTS7232XXL9SA6X / HTS7232XXL9A36X 99
Table 65 Number of cylinders/heads/sectors by models for HTS7232XXL9SA8X / HTS7232XXL9A38X 100
Table 66 Idle Command (E3h/97h) 101
Table 67 Idle Immediate Command (E1h/95h) 102
Table 68 Initialize Device Parameters Command (91h) 103
Table 69 Read Buffer Command (E4h) 104
Table 70 Read DMA Command (C8h/C9h) 105
Table 71 Read DMA Ext Command (25h) 106
Table 72 Read FPDMA Queued Command (60h) 107
Table 73 Read Log Ext Command (2Fh) 108
Table 74 Log address definition 108
Table 75 General purpose Log Directory 109
Table 76 Extended comprehensive SMART error Log 110
Table 77 Extended Error log data structure 110
Table 78 Command data structure 111

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Table 79 Error data structure 111
Table 80 Extended Self-test log data structure 112
Table 81 Extended Self-test log descriptor entry 113
Table 82 Command Error information 113
Table 83 Phy Event Counter Identifier 114
Table 84 Phy Event Counter information 115
Table 85 Read Multiple Command (C4h) 116
Table 86 Read Multiple Ext Command (29h) 117
Table 87 Read Native Max Address Command (F8h) 118
Table 88 Read Native Max Address Ext Command (29h) 119
Table 89 Read Sector(s) Command (20h/21h) 120
Table 90 Read Sector(s) Ext Command (24h) 121
Table 91 Read Verify Sector(s) Command (40h/41h) 122
Table 92 Read Verify Sector(s) Ext Command (42h) 123
Table 93 Recalibrate Command (1xh) 124
Table 94 Security Disable Password Command (F6h) 125
Table 95 Password Information for Security Disable Password command 125
Table 96 Security Erase Prepare Command (F3h) 126
Table 97 Security Erase Unit Command (F4h) 127
Table 98 Erase Unit Information 127
Table 99 Security Freeze Lock Command (F5h) 129
Table 100 Security Set Password Command (F1h) 130
Table 101 Security Set Password Information 130
Table 102 Security Unlock Command (F2h) 132
Table 103 Security Unlock Information 132
Table 104 Seek Command (7xh) 133
Table 105 Sense Condition Command (F0h) 134
Table 106 Set Features Command (EFh) 135
Table 107 Set Max Address Command (F9h) 137
Table 108 Set Max Address Ext Command (37h) 139
Table 109 Set Multiple Command (C6h) 141
Table 110 Sleep Command (E6h/99h) 142
Table 111 S.M.A.R.T. Function Set Command (B0h) 143
Table 112 Log sector addresses 146
Table 113 Device Attribute Data Structure 148
Table 114 Individual Attribute Data Structure 149
Table 115 Status Flag Definitions 150
Table 116 Device Attribute Thresholds Data Structure 153
Table 117 Individual Threshold Data Structure 153
Table 118 SMART Log Directory 154
Table 119 S.M.A.R.T. error log sector 154
Table 120 Error log data structure 155
Table 121 Command data structure 155
Table 122 Error data structure 155
Table 123 Self-test log data structure 157
Table 124 Selective self-test log data structure 158
Table 125 S.M.A.R.T. Error Codes 158
Table 126 Standby Command (E2h/96h) 159
Table 127 Standby Immediate Command (E0h/94h) 160
Table 128 Write Buffer Command (E8h) 161
Table 129 Write DMA Command (CAh/CBh) 162
Table 130 Write DMA Ext Command (35h) 163
Table 131 Write DMA FUA Ext Command (3Dh) 164
Table 132 Write FPDMA Queued Command (61h) 165
Table 133 Write Log Ext Command 166
Table 134 Write Multiple Command (C5h) 167
Table 135 Write Multiple Ext Command (39h) 168
Table 136 Write Multiple FUA Ext Command (CEh) 169
Table 137 Write Sector(s) Command (30h/31h) 170
Table 138 Write Sector(s) Ext Command (34h) 171
Table 139 Write Uncorrectable Ext Command (45h) 172
Table 140 Timeout Values 174

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7K320 SATA OEM Specification
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General
1 Introduction
This document describes the specifications of the HITACHI Travelstar 7K320, a 2.5-inch hard disk
drive with Serial ATA interface:
Drive
name Model Number Max data transfer rate
(Gbps)
Capacity
(GB) Height (mm) Rotation speed (rpm)
HTS723232L9A360 3.0
Travelstar
7K320-320 HTS723232L9SA60 1.5 320 9.5 7200
HTS723225L9A360 3.0
Travelstar
7K320-250 HTS723225L9SA60 1.5 250 9.5 7200
HTS723216L9A360 3.0
Travelstar
7K320-160 HTS723216L9SA60 1.5 160 9.5 7200
HTS723212L9A360 3.0
Travelstar
7K320-120 HTS723212L9SA60 1.5 120 9.5 7200
HTS723280L9A360 3.0
Travelstar
7K320-80 HTS723280L9SA60 1.5 80 9.5 7200
Part 1 of this document beginning on page 15 defines the hardware functional specification. Part 2 of
this document beginning on page 42 defines the interface specification.
1.1 Abbreviations
Abbreviation Meaning
32 KB 32 x 1024 bytes
64 KB 64 x 1024 bytes
“ inch
A amp
AC alternating current
AT Advanced Technology
ATA Advanced Technology Attachment
Bels unit of sound power
BIOS Basic Input/Output System
°C degrees Celsius
CSA Canadian Standards Association
C-UL Canadian-Underwriters Laboratory
Cyl cylinder
DC direct current
DFT Drive Fitness Test
DMA Direct Memory Access

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ECC error correction code
EEC European Economic Community
EMC electromagnetic compatibility
ERP Error Recovery Procedure
Esd electrostatic discharge
FCC Federal Communications Commission
FRU field replacement unit
G gravity, a unit of force
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
imped impedance
I/O Input/Output
ISO International Standards Organization
KB 1,000 bytes
Kbit/mm 1,000 bits per mm
Kbit/sq-mm 1000 bits per square mm
KHz kilohertz
LBA logical block addressing
Lw unit of A-weighted sound power
m meter
max. or Max. maximum
MB 1,000,000 bytes
Mbps 1,000,000 Bit per second
Mb/sec 1,000,000 Bit per second
MB/sec 1,000,000 bytes per second
MHz megahertz
MLC Machine Level Control
mm millimeter
ms millisecond
us, s microsecond
Nm Newton meter
No. or # number
oct/min oscillations per minute

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O Output
OD Open Drain
PIO Programmed Input/Output
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
% RH per cent relative humidity
RMS root mean square
RPM revolutions per minute
RST reset
R/W read/write
sec second
Sect/Trk sectors per track
SELV secondary low voltage
S.M.A.R.T Self-monitoring, analysis, and reporting technology
Trk. track
TTL transistor-transistor logic
UL Underwriters Laboratory
V volt
VDE Verband Deutscher Electrotechniker
W watt
3-state transistor-transistor tristate logic

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References
Serial ATA International Organization: Serial ATA Revision 2.6
1.2 General caution
Do not apply force to the top cover (See figure below).
Do not cover the breathing hole on the top cover (See figure below).
Do not touch the interface connector pins or the surface of the printed circuit board.
The drive can be damaged by shock or ESD (Electric Static Discharge). Any damages incurred to
the drive after removing it from the shipping package and the ESD protective bag are the
responsibility of the user
1.3 Drive handling precautions
Do not press on the drive cover during handling.

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2 Outline of the drive
・ 2.5-inch, 9.5-mm Height
・ Perpendicular Recording
・ Formatted capacities of 320GB, 250GB, 160GB, 120GB, and 80GB (512 bytes/sector)
・ SATA Interface conforming to Serial ATA International Organization: Serial ATA Revision
2.6(15-February-2007)
・ Integrated controller
・ No-ID recording format
・ Coding : 199/200
・ Multi zone recording
・ Enhanced ECC
・ 10 bit 40 symbol non Interleaved Read Solomon code
・ Non interleave On-The –Fly correction
・ Included 2 symbol system ECC
・ Segmented Buffer with write cache
・ 16384 KB - Upper 1326 KB is used for firmware
・ Fast data transfer rate
・ HTS7232xxL9A360 model : up to 3.0Gbit/s
・ HTS7232xxL9SA60 model : up to 1.5Gbit/s
・ Media data transfer rate (max): 1136 Mb/s
・ Average seek time: 12 ms for read
・ Closed-loop actuator servo (Embedded Sector Servo)
・ Rotary voice coil motor actuator
・ Load/Unload mechanism
・ Mechanical latch
・ 0.8 Watts at idle state
・ Power on to ready: 4.0 sec (Typical)
・ Operating shock
・ 3920 m/sec2 (400 G)/2ms, 1960 m/sec2 (200G)/1ms
・ Non operating shock
・ 9800 m/sec2 (1000 G)/1ms
・ Full data encryption as optional (HTS7232xxL9SA61 model only)

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Part 1 Functional Specification

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3 Fixed disk subsystem description
3.1 Control Electronics
The control electronics works with the following functions:
SATA Interface Protocol
Embedded Sector Servo
No-ID (TM) formatting
Multizone recording
Code: 100/102
・ System ECC
・ Enhanced Adaptive Battery Life Extender
・ Full Data Encryption(HTS7232xxL9SA61 model only)
3.2 Head disk assembly data
The following technologies are used in the drive:
Femto Slider
Perpendicular recording disk and write head
TMR head
Integrated lead suspension (ILS)
Load/unload mechanism
Mechanical latch

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4 Fixed disk characteristics
4.1 Formatted capacity by model number
Description HTS723232L9A360
HTS723232L9SA60 HTS723225L9A360 HTS723225L9SA60
Physical Layout
Bytes per Sector 512 512
Sectors per Track 1548 (max) 1410 (max)
Number of Heads 4 4
Number of Disks 2 2
Logical Layout
Number of Sectors 625,142,448 488,397,168
Total Logical Data
Bytes 320,072,933,376 250,059,350,016
Description HTS723216L9A360
HTS723216L9SA60 HTS723212L9A360 HTS723212L9SA60 HTS723280L9A360 HTS723280L9SA60
Physical Layout
Bytes per Sector 512 512 512
Sectors per Track 1548 (max) 1350 (max) 1548 (max)
Number of Heads 2 2 1
Number of Disks 1 1 1
Logical Layout
Number of Sectors 312,581,808 234,441,648 156,301,488
Total Logical Data
Bytes 160,041,885,696 120,034,123,776 80,026,361,856
Table 1. Formatted capacity by model number.

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4.2 Data sheet
320GB 250GB 160GB 120GB 80GB
Rotational Speed (RPM) 7200 7200 7200 7200 7200
Data transfer rates (buffer to/from
media) (Mbps) 1136 1087 1136 1032 1136
Data transfer rates (Gbit/sec) 1.5/3.0 1.5/3.0 1.5/3.0 1.5/3.0 1.5/3.0
Recording density (Kbit/mm) (Max)
(KBPI) (Max) 47.8
1215 43.8 1113 47.8 1215 42.3 1074 47.8 1215
Track density (Ktrack/mm)(Max)
(KTPI)(Max) 8.15
207 7.17 182 8.15 207 7.17 182 8.15 207
Areal density (Gbit/sq-mm.- Max)
(Gbit/sq-inch-Max) 0.39
251 0.31 203 0.39 251 0.30 196 0.39 251
Number of zones 24 24 24 24 24
Table 2. Data sheet
4.3 Cylinder allocation
Data format is allocated by each head characteristics. Typical format is described below.
160GB/p Mid BIP-Mid TPI format
Zone Cylinder No. of
Sectors/Trk
0 0 - 6140 1470
1 6141 - 17354 1470
2 17355 - 22160 1395
3 22161 - 27856 1368
4 27857 - 33463 1350
5 33464 - 38981 1320
6 38982 - 45300 1290
7 45301 - 53933 1260
8 53934 - 58561 1224
9 58562 - 64613 1200
10 64614 - 71466 1170
11 71467 - 72979 1140
12 72980 - 80722 1116
13 80723 - 88643 1080
14 88644 - 91847 1050
15 91848 - 98255 1008
16 98256 - 102260 990
17 102261 - 106977 960
18 106978 - 110893 930
19 110894 - 118636 900
20 118637 - 123175 855
21 123176 - 127091 828
22 127092 - 130206 810
23 130207 - 138305 750
Table 3. Cylinder allocation

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4.4 Performance characteristics
Drive performance is characterized by the following parameters:
Command Overhead
Mechanical Positioning
 Seek Time
 Latency
Data Transfer Speed
Buffering Operation (Look ahead/Write Cache)
Note: All the above parameters contribute to drive performance. There are other parameters which
contribute to the performance of the actual system. This specification defines the essential characteristics
of the drive. This specification does not include the system throughput as this is dependent upon the
system and the application.
The following table gives a typical value for each parameter. The detailed descriptions are found in
section 5.0.
Function
Average Random Seek Time – Read/Write (ms) 12
Rotational Speed (RPM) 7200
Power-on-to-ready (sec)(Typical) 4.0
Command overhead (ms) 1.0
Disk-buffer data transfer (Mb/s) (max) 1136
Buffer-host data transfer (Gbit/s) (max) 1.5/3.0
Table 4. Performance characteristics
4.4.1 Command overhead
Command overhead time is defined as the interval from the time that a drive receives a command to the
time that the actuator starts its motion.

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4.4.2 Mechanical positioning
4.4.2.1 Average seek time (including settling)
Command Type Typical (ms) Max. (ms)
Read/Write 12 18
Table 5. Mechanical positioning performance
Typical and Max. are defined throughout the performance specification as follows:
Typical 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 6.1, "Environment" on page 23 and section 6.2, "DC power
requirements" on page 25)
The seek time is measured from the start of motion of the actuator to the start of a reliable read or write
operation. A reliable read or write operation implies that error correction/recovery is not employed to
correct arrival problems. The Average Seek Time is measured as the weighted average of all possible
seek combinations.
max.
(max. + 1 – n)(Tnin + Tnout)
n=1
Weighted Average = ––––––––––––––––––––––––––––
(max. + 1)(max)
Where: max. = maximum seek length
n =seeklength(1-to-max.)
Tn
in = inward measured seek time for an n-track seek
Tn
out = outward measured seek time for an n-track seek
4.4.2.2 Full stroke seek
Command Type Typical (ms) Max. (ms)
Read 20.0 27.0
Write 22.0 29.0
Table 6. Full stroke seek time
Full stroke seek time in milliseconds is the average time of 1000 full stroke seeks.
4.4.2.3 Single track seek time (without command overhead, including
settling)
Command Type Typical (ms) Maximum (ms)
Read 1.0 2.0
Write 1.1 2.2
Table 7. Single track seek time
Single track seek is measured as the average of one (1) single track seek from every track in both
directions (inward and outward).
4.4.2.4 Average latency
Rotational Speed
(RPM) Time for one revolution (ms) Average Latency (ms)
7200 8.3 4.2
Table 8. Latency time

7K320 SATA OEM Specification
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4.4.2.5 Drive ready time
Condition Typical (sec) Max. (sec)
Power On To Ready 4.0 9.5
Table 9. Drive ready time
Ready The condition in which the drive is able to perform a media access command
(for example—read, write) immediately.
Power On To Ready This includes the time required for the internal self diagnostics.