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Toshiba Corporation Digital Media Network Company
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LBA 0
User LBA space
LBA max
Test
span
1
Starting LBA for
test span 1
Ending LBA for
test span 1
Test
span
2
Starting LBA for
test span 2
Ending LBA for
test span 2
Test
span
3
Starting LBA for
test span 3
Ending LBA for
test span 3
Selective self-test test span example
After the scan of the selected spans described above, a user may wish to have the rest of media read scanned
as an off-line scan. In this case, the user shall set the flag to enable off-line scan in addition to the other settings.
If an error occurs during the scanning of the test spans, the error is reported in the self-test execution status in
the SMART READ DATA response and the off-line scan is not executed. When the test spans defined have
been scanned, the device shall then set the off-line scan pending and active flags in the Selective self-test log to
one, the span under test to a value greater than five, the self-test execution status in the SMART READ DATA
response to 00h, set a value of 03h in the off-line data collection status in the SMART READ DATA response
and shall proceed to do an off-line read scan through all areas not included in the test spans. This off-line read
scan shall completed as rapidly as possible, no pauses between block reads, and any errors encountered shall
not be reported to the host. Instead error locations may be logged for future reallocation. If the device is
powered-down before the off-line scan is completed, the off-line scan shall resume when the device is again
powered up. From power-up, the resumption of the scan shall be delayed the time indicated in the Selective
self-test pending time field in the Selective self-test log. During this delay time the pending flag shall be set to
one and the active flag shall be set to zero in the Selective self-test log. Once the time expires, the active flag
shall be set to one, and the off-line scan shall resume. When the entire media has been scanned, the off-line
scan shall terminate, both the pending and active flags shall be cleared to zero, and the off-line data collection
status in the SMART READ DATA response shall be set to 02h indicating completion.
During execution of the Selective self-test, the self-test executions time byte in the Device SMART Data
Structure may be updated but the accuracy may not be exact because of the nature of the test span segments.
For this reason, the time to complete off-line testing and the self-test polling times are not valid. Progress
through the test spans is indicated in the selective self-test log.
A hardware or software reset shall abort the Selective self-test except when the pending bit is set to one in the
Selective self-test log (see 10.8.42.6.5). The receipt of a SMART EXECUTE OFF-LINE IMMEDIATE command
with 0Fh, Abort off-line test routine, in the LBA Low register shall abort Selective self-test regardless of where
the device is in the execution of the command. If a second self-test is issued while a selective self-test is in
progress, the selective self-test is aborted and the newly requested self-test is executed.