Device Attribute Data Structure - Hitachi 7K100 - Travelstar - Hard Drive Specifications

13.39.1.5 S.M.A.R.T. Execute Off-line Immediate (subcommand D4h)
This subcommand causes the device to immediately initiate the set of activities that collect Attribute data in an off-
line mode (off-line routine) or execute a self-test routine in either captive or off-line mode. The LBA Low register
shall be set to specify the operation to be executed.
LBA Low
0 Execute S.M.A.R.T. off-line data collection routine immediately
1 Execute S.M.A.R.T. Short self-test routine immediately in off-line mode
2 Execute S.M.A.R.T. Extended self-test routine immediately in off-line mode
3 Reserved
4 Execute S.M.A.R.T. Short self-test routine immediately in off-line mode
127 Abort off-line mode self-test routine
128 Reserved
129 Execute S.M.A.R.T. short self-test routine immediately in captive mode
130 Execute S.M.A.R.T. Extended self-test routine immediately in captive mode
131 Reserved
132 Execute S.M.A.R.T. selective self-test routine immediately in captive mode
Off-line mode: The device executes command completion before executing the specified routine. During execu-
tion of the routine the device will not set BSY nor clear DRDY. If the device is in the process of performing its rou-
tine and is interrupted by a new command from the host, the device will abort or suspend its routine and service the
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 115: "Device Attribute Data Structure" on page 169) and ATA registers
and then executes the command completion. See definitions below.
Status Set ERR to one when the self-test has failed
Error Set ABRT to one when the self-test has failed
LBA Low Set to F4h when the self-test has failed
LBA High Set to 2Ch when the self-test has failed
13.39.1.6 S.M.A.R.T. Selective self-test routine
When the value in the LBA Low register is 4 or 132, the Selective self-test routine shall be performed. This self-
test routine shall include the initial tests performed by the Extended self-test routine plus a selectable read scan.
The host shall not write the Selective self-test log while the execution of a Selective self-test command is in
progress.
The user may choose to do read scan only on specific areas of the media. To do this, user shall set the test spans
desired in the Selective self-test log and set the flags in the Feature flags field of the Selective self-test log to indi-
cate do not perform off-line scan. In this case, the test spans defined shall be read scanned in their entirety. The
Selective self-test log is updated as the self-test proceeds indicating test progress. When all specified test spans
have been completed, the test is terminated and the appropriate self-test execution status is reported in the SMART
READ DATA response depending on the occurrence of errors. Figure 87 shows an example of a Selective selftest
definition with three test spans defined. In this example, the test terminates when all three test spans have been
scanned.
Operation to be executed
Travelstar 7K100 Hard Disk Drive Specification
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