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Hitachi 7K100 Hard Drive Specifications - Page 182

S.M.A.R.T. Return Status subcommand DAh, 39.1.12, S.M.A.R.T. Enable/Disable Automatic Off-

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13.39.1.11 S.M.A.R.T. Return Status (subcommand DAh) This subcommand is used to communicate the reliability status of the device to the host's request. Upon receipt of the S.M.A.R.T. Return Status subcommand the device asserts BSY, saves any updated Attribute Values to the reserved sector, and compares the updated Attribute Values to the Attribute Thresholds. If the device does not detect a Threshold Exceeded Condition, or detects a Threshold Exceeded Condition but involving attributes are advisory, the device loads 4Fh into the LBA Mid register, C2h into the LBA High register, clears BSY, and asserts INTRQ. If the device detects a Threshold Exceeded Condition for prefailure attributes, the device loads F4h into the LBA Mid register, 2Ch into the LBA High register, clears BSY, and asserts INTRQ. Advisory attributes never result in a negative reliability condition. 13.39.1.12 S.M.A.R.T. Enable/Disable Automatic Off-line (subcommand DBh) This subcommand enables and disables the optional feature that cause the device to perform the set of off-line data collection activities that automatically collect attribute data in an off-line mode and then save this data to the device's nonvolatile memory. This subcommand may either cause the device to automatically initiate or resume performance of its off-line data collection activities or cause the automatic off-line data collection feature to be disabled. This subcommand also enables and disables the off-line read scanning feature that cause the device to perform the entire read scanning with defect reallocation as the part of the off-line data collection activities. The Sector Count register shall be set to specify the feature to be enabled or disabled: Sector Count 00h 01h F8h F9h Feature Description Disable Automatic Off-line Disable Off-line Read Scanning Enable Automatic Off-line Enable Off-line Read Scanning A value of zero written by the host into the device's Sector Count register before issuing this subcommand shall cause the automatic off-line data collection feature to be disabled. Disabling this feature does not preclude the device from saving attribute values to nonvolatile memory during some other normal operation such as during a power-on, during a power-off sequence, or during an error recovery sequence. A value of one written by the host into the device's Sector Count register before issuing this subcommand shall cause the off-line read scanning feature to be disabled. The Device does not perform the off-line read scanning at the off-line data collection activities which is initiated by the S.M.A.R.T. Execute Off-line Immediate (Subcommand D4h) or automatically if the off-line read scanning feature is disabled. A value of F8h written by the host into the device's Sector Count register before issuing this subcommand shall cause the automatic Off-line data collection feature to be enabled. A value of F9 written by the host into the device's Sector Count register before issuing this subcommand shall cause the off-line read scanning feature to be enabled. The Device perform the off-line read scanning at the off-line data collection activities which is initiated by the S.M.A.R.T. Execute Off-line Immediate (Subcommand D4h) even if the automatic off-line feature is disabled. Any other non-zero value written by the host into this register before issuing this subcommand is vendor specific and will not change the current Automatic Off-Line Data Collection and Off-line Read Scanning status. However, the device may respond with the error code specified in Table 125: "S.M.A.R.T. Error Codes" on page 180. Travelstar 7K100 Hard Disk Drive Specification 168

Section	Page
1.0 General	15
1.1 Introduction	15
1.2 References	15
1.3 Abbreviations	15
1.4 Caution	17
1.5 Drive handling precautions	17
2.0 Outline of the drive	19
3.0 Fixed-disk subsystem description	23
3.1 Control electronics	23
3.2 Head disk assembly data	23
4.0 Drive characteristics	25
4.1 Formatted capacity	25
4.2 Data sheet	25
4.3 Cylinder allocation	26
4.4 Performance characteristics	27
4.4.1 Command overhead	27
4.4.2 Mechanical positioning	28
4.4.3 Operating modes	30
5.0 Data integrity	31
5.1 Data loss at power off	31
5.2 Write Cache	31
5.3 Equipment status	31
5.4 WRITE safety	32
5.5 Data buffer test	32
5.6 Error recovery	32
5.7 Automatic reallocation	32
5.8 ECC	33
6.0 Specification	35
6.1 Environment	35
6.1.1 Temperature and humidity	35
6.1.2 Radiation noise	37
6.1.3 Conductive noise	37
6.1.4 Magnetic fields	37
6.2 DC power requirements	38
6.2.1 Power consumption efficiency	38
6.3 Reliability	39
6.3.1 Data Reliability	39
6.3.2 Failure prediction (S.M.A.R.T.)	39
6.3.3 Cable noise interference	39
6.3.4 Service life and usage condition	39
6.3.5 Preventive maintenance	39
6.3.6 Load/unload	40
6.4 Mechanical specifications	42
6.4.1 Physical dimensions and weight	42
6.4.2 Mounting hole locations	42
6.4.3 Connector and jumper description	42
6.4.4 Mounting orientation	43
6.4.5 Load/unload mechanism	43
6.5 Vibration and shock	44
6.5.1 Operating vibration	44
6.5.2 Nonoperating vibration	45
6.5.3 Operating shock	45
6.5.4 Nonoperating shock	45
6.6 Acoustics	46
6.6.1 Sound power levels	46
6.6.2 Discrete tone penalty	46
6.7 Identification labels	47
6.8 Electromagnetic compatibility	47
6.8.1 CE mark	47
6.8.2 C-TICK mark	47
6.8.3 BSMI mark	47
6.8.4 MIC mark	47
6.9 Safety	48
6.9.1 UL and CSA approval	48
6.9.2 IEC compliance	48
6.9.3 German safety mark	48
6.9.4 Flammability	48
6.9.5 Secondary circuit protection	48
6.10 Packaging	48
7.0 Electrical interface specification	49
7.1 Cabling	49
7.2 Interface connector	49
7.3 Signal definitions	50
7.4 Signal descriptions	51
7.5 Interface logic signal levels	54
7.6 Reset timings	54
7.7 PIO timings	55
7.8 Multi word DMA timings	56
7.9 Ultra DMA timings	57
7.9.1 Initiating Read DMA	57
7.9.2 Host Pausing Read DMA	58
7.9.3 Host Terminating Read DMA	59
7.9.4 Device Terminating Read DMA	60
7.9.5 Initiating Write DMA	61
7.9.6 Device Pausing Write DMA	62
7.9.7 Device Terminating Write DMA	63
7.9.8 Host Terminating Write DMA	64
7.10 Drive address setting	65
7.11 Addressing of HDD registers	66
8.0 General	69
8.1 Introduction	69
8.2 Terminology	69
9.0 Deviations from standard	71
10.0 Register	73
10.1 Alternate Status Register	74
10.2 Command Register	74
10.3 Data Register	74
10.4 Device Control Register	75
10.5 Drive Address Register	75
10.6 Device Register	76
10.7 Error Register	76
10.8 Features Register	77
10.9 LBA High Register	77
10.10 LBA Low Register	77
10.11 LBA Mid Register	77
10.12 Sector Count Register	77
10.13 Status Register	78
11.0 General	79
11.1 Reset response	79
11.2 Register initialization	80
11.3 Diagnostic and Reset considerations	81
11.4 Power-off considerations	82
11.4.1 Load/Unload	82
11.4.2 Emergency unload	82
11.4.3 Required power-off sequence	82
11.5 Sector Addressing Mode	83
11.5.1 Logical CHS addressing mode	83
11.5.2 LBA addressing mode	83
11.6 Power management features	84
11.6.1 Power mode	84
11.6.2 Power management commands	84
11.6.3 Standby/Sleep command completion time	84
11.6.4 Standby timer	85
11.6.5 Status	85
11.6.6 Interface capability for power modes	85
11.6.7 Initial Power Mode at Power On	85
11.7 Advanced Power Management (ABLE-3) feature	85
11.7.1 Performance Idle Mode	86
11.7.2 Active Idle Mode	86
11.7.3 Low Power Idle Mode	86
11.7.4 Transition time	86
11.8 S.M.A.R.T. Function	87
11.8.1 Attributes	87
11.8.2 Attribute values	87
11.8.3 Attribute thresholds	87
11.8.4 Threshold exceeded condition	87
11.8.5 S.M.A.R.T. commands	87
11.8.6 S.M.A.R.T. operation with power management modes	88
11.9 Security Mode Feature Set	88
11.9.1 Security mode	88
11.9.2 Security level	88
11.9.3 Password	89
11.9.4 Master Password Revision Code	89
11.9.5 Command table	92
11.10 Protected Area Function	93
11.10.1 Example for operation (In LBA Mode)	93
11.10.2 Set Max security extension commands	94
11.11 Address Offset Feature (vendor specific)	95
11.11.1 Enable/Disable Address Offset Mode	95
11.11.2 Identify Device Data	96
11.11.3 Exceptions in Address Offset Mode	96
11.12 Seek Overlap	97
11.13 Write Cache function	97
11.14 Reassign Function	98
11.14.1 Auto Reassign Function	98
11.15 48-bit Address Feature Set	99
12.0 Command protocol	101
12.1 Data In commands	101
12.2 Data Out Commands	102
12.3 Non-data commands	103
12.4 DMA Data Transfer commands:	105
13.0 Command descriptions	107
13.1 Check Power Mode (E5h/98h)	112
13.2 Device Configuration Overlay (B1h)	113
13.2.1 DEVICE CONFIGURATION RESTORE (subcommand C0h)	113
13.2.2 DEVICE CONFIGURATION FREEZE LOCK (subcommand C1h)	113
13.2.3 DEVICE CONFIGURATION IDENTIFY (subcommand C2h)	114
13.2.4 DEVICE CONFIGURATION SET (subcommand C3h)	114
13.3 Execute Device Diagnostic (90h)	116
13.4 Flush Cache (E7h)	117
13.5 Flush Cache EXT (EAh)	118
13.6 Format Track (50h: vendor specific)	119
13.7 Format Unit (F7h: vendor specific)	120
13.8 Identify Device (ECh)	121
13.9 Idle (E3h/97h)	130
13.10 Idle Immediate (E1h/95h)	131
13.11 Initialize Device Parameters (91h)	132
13.12 Read Buffer (E4h)	133
13.13 Read DMA (C8h/C9h)	134
13.14 Read DMA EXT (25h)	136
13.15 Read Log Ext (2Fh)	138
13.15.1 General Purpose Log Directory	139
13.15.2 Extended Comprehensive SMART Error Log	140
13.15.3 Extended Self-test log sector	142
13.16 Read Long (22h/23h)	144
13.17 Read Multiple (C4h)	146
13.18 Read Multiple EXT (29h)	148
13.19 Read Native Max ADDRESS (F8h)	149
13.20 Read Native Max ADDRESS EXT (27h)	150
13.21 Read Sectors (20h/21h)	151
13.22 Read Sector(s) EXT (24h)	152
13.23 Read Verify Sectors (40h/41h)	154
13.24 Ready Verify Sector(s) EXT (42h)	156
13.25 Recalibrate (1xh)	158
13.26 Security Disable Password (F6h)	159
13.27 Security Erase Prepare (F3h)	160
13.28 Security Erase Unit (F4h)	161
13.29 Security Freeze Lock (F5h)	163
13.30 Security Set Password (F1h)	164
13.31 Security Unlock (F2h)	166
13.32 Seek (7xh)	167
13.33 Sense Condition (F0h: vendor specific)	168
13.34 Set Features (EFh)	169
13.35 Set Max ADDRESS (F9h)	171
13.36 Set Max ADDRESS EXT (37h)	173
13.37 Set Multiple (C6h)	175
13.38 Sleep (E6h/99h)	176
13.39 S.M.A.R.T. Function Set (B0h)	177
13.39.1 S.M.A.R.T. Function Subcommands	178
13.39.2 Device Attribute Data Structure	183
13.39.3 Device Attribute Thresholds data structure	188
13.39.4 S.M.A.R.T. Log Directory	190
13.39.5 S.M.A.R.T. error log sector	190
13.39.6 Self-test log data structure	193
13.39.7 Selective self-test log data structure	193
13.39.8 Error reporting	194
13.40 Standby (E2h/96h)	195
13.41 Standby Immediate (E0h/94h)	196
13.42 Write Buffer (E8h)	197
13.43 Write DMA (CAh/CBh)	198
13.44 Write DMA EXT (35h)	200
13.45 Write Log Ext (3Fh)	202
13.46 Write Long (32h/33h)	203
13.47 Write Multiple (C5h)	205
13.48 Write Multiple EXT (39h)	206
13.49 Write Sectors (30h/31h)	208
13.50 Write Sectors(s) EXT (34h)	210
13.51 Write Verify (3Ch: vendor specific)	211
14.0 Time-out values	213
15.0 Appendix	215
15.1 Commands Support Coverage	215
15.2 SET FEATURES Commands Support Coverage	217

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Travelstar 7K100 Hard Disk Drive Specification

168

13.39.1.11

S.M.A.R.T. Return Status (subcommand DAh)

This subcommand is used to communicate the reliability status of the device to the host's request. Upon receipt of

the S.M.A.R.T. Return Status subcommand the device asserts BSY, saves any updated Attribute Values to the

reserved sector, and compares the updated Attribute Values to the Attribute Thresholds.

If the device does not detect a Threshold Exceeded Condition, or detects a Threshold Exceeded Condition but

involving attributes are advisory, the device loads 4Fh into the LBA Mid register, C2h into the LBA High register,

clears BSY, and asserts INTRQ.

If the device detects a Threshold Exceeded Condition for prefailure attributes, the device loads F4h into the LBA

Mid register, 2Ch into the LBA High register, clears BSY, and asserts INTRQ. Advisory attributes never result in a

negative reliability condition.

13.39.1.12

S.M.A.R.T. Enable/Disable Automatic Off-line (subcommand DBh)

This subcommand enables and disables the optional feature that cause the device to perform the set of off-line data

collection activities that automatically collect attribute data in an off-line mode and then save this data to the

device's nonvolatile memory. This subcommand may either cause the device to automatically initiate or resume

performance of its off-line data collection activities or cause the automatic off-line data collection feature to be dis-

abled. This subcommand also enables and disables the off-line read scanning feature that cause the device to per-

form the entire read scanning with defect reallocation as the part of the off-line data collection activities.

The Sector Count register shall be set to specify the feature to be enabled or disabled:

A value of zero written by the host into the device's Sector Count register before issuing this subcommand shall

cause the automatic off-line data collection feature to be disabled. Disabling this feature does not preclude the

device from saving attribute values to nonvolatile memory during some other normal operation such as during a

power-on, during a power-off sequence, or during an error recovery sequence.

A value of one written by the host into the device's Sector Count register before issuing this subcommand shall

cause the off-line read scanning feature to be disabled. The Device does not perform the off-line read scanning at

the off-line data collection activities which is initiated by the S.M.A.R.T. Execute Off-line Immediate (Subcom-

mand D4h) or automatically if the off-line read scanning feature is disabled.

A value of F8h written by the host into the device's Sector Count register before issuing this subcommand shall

cause the automatic Off-line data collection feature to be enabled.

A value of F9 written by the host into the device's Sector Count register before issuing this subcommand shall

cause the off-line read scanning feature to be enabled. The Device perform the off-line read scanning at the off-line

data collection activities which is initiated by the S.M.A.R.T. Execute Off-line Immediate (Subcommand D4h)

even if the automatic off-line feature is disabled.

Any other non-zero value written by the host into this register before issuing this subcommand is vendor specific

and will not change the current Automatic Off-Line Data Collection and Off-line Read Scanning status. However,

the device may respond with the error code specified in Table 125: “S.M.A.R.T. Error Codes” on page 180.

Sector Count

Feature Description

00h

Disable Automatic Off-line

01h

Disable Off-line Read Scanning

F8h

Enable Automatic Off-line

F9h

Enable Off-line Read Scanning