Device Attribute Data Structure - Hitachi T7K250 - Deskstar - Hard Drive Specifications

host within two seconds after receipt of the new command. After servicing the interrupting command, the device
will resume its routine automatically or not start its routine depending on the interrupting command.
Captive mode: When executing self-test in captive mode, the device sets BSY to one and executes the specified
self-test routine after receipt of the command. At the end of the routine the device sets the execution result in the
Self-test execution status byte (see Table 127: "Device Attribute Data Structure" on page 204) and ATA registers
as defined below and then executes the command completion.
Status Set ERR to one when the self-test has failed
Error Set ABRT to one when the self-test has failed
Cyl Low Set to F4h when the self-test has failed
Cyl High Set to 2Ch when the self-test has failed
12.43.1.6 S.M.A.R.T. Read Log Sector (subcommand D5h)
This command returns the specified log sector contents to the host.
The 512 bytes of data are returned at a command and the Sector Count value shall be set to one. The Sector Num-
ber shall be set to specify the log sector address.
Log sector address
00h
01h
03h
06h
07h
80h-9Fh
Note: Log addresses 03h and 07h are used by the Read Log Ext and Write Log Ext commands. If these log
addresses are used with the SMART Read Log Sector command, the device shall return command aborted.
12.43.1.7 S.M.A.R.T. Write Log Sector (subcommand D6h)
This command writes 512 bytes of data to the specified log sector.
The 512 bytes of data are transferred at a command and the Sector Count value shall be set to one. The Sector
Number shall be set to specify the log sector address as shown above. If a Read Only log sector is specified, the
device returns ABRT error.
12.43.1.8 S.M.A.R.T. Enable Operations (subcommand D8h)
This subcommand enables access to all S.M.A.R.T. capabilities within the device. Prior to receipt of a S.M.A.R.T.
Enable Operations subcommand, Attribute Values are neither monitored nor saved by the device. The state of
S.M.A.R.T.—either enabled or disabled—will be preserved by the device across power cycles. When enabled, the
receipt of subsequent S.M.A.R.T. Enable Operations subcommands will not affect any of the Attribute Values.
Upon receipt of the SMART Enable Operations subcommand from the host the device enables S.M.A.R.T. capabil-
ities and functions and then saves any updated Attribute Values to the Attribute Data sector.
12.43.1.9 S.M.A.R.T. Disable Operations (subcommand D9h)
This subcommand disables all S.M.A.R.T. capabilities within the device including the attribute Autosave feature of
the device. After receipt of this subcommand the device disables all S.M.A.R.T. operations. Non self-preserved
Attribute Values will no longer be monitored. The state of S.M.A.R.T.—either enabled or disabled—is preserved
by the device across power cycles.
Content
Log directory
S.M.A.R.T. Error Log
Extended Comprehensive SMART Error Log
S.M.A.R.T. Self-test Log
Extended Self-test Log
Host vendor specific
Deskstar T7K250 Hard Disk Drive Specification
Type
Read Only
Read Only
See note
Read Only
See note
Read/Write
202