Filter
Top Products
7.5 Drive Self-Test (DST)
C141-C013 409
e. Data compare test
This test segment compares data by performing write/read processing on the
internal-test cylinder using all heads. If it encounters an error while
performing data compare processing, Miscompare [=E]/Miscompare During
Self Configuration [=1D-80] is reported on the self-test result log page.
If this test segment encounters an error while performing processing other
than data compare processing, error information that indicates the cause of
error is reported on the self-test result log page.
Write retries are performed based on the write retry count on the mode page
(PageCode = 01). Read retries are performed based on the verify retry count
on the mode page (PageCode = 07).
f. Random read test
This test segment conducts a random read test.
The number of blocks that are read by this test segment is 10h, beginning
with the block on physical sector 0 on the track targeted for reading. Retries
are performed based on the verify retry count on the mode page (PageCode =
07).
g. Sequential read test
This test segment performs read processing while sequentially accessing the
logical block addresses that begin with logical block address "0" and end with
the maximum logical block address for the test. Retries are performed based
on the verify retry count on the mode page (PageCode = 07).
h. SMART test
This test segment determines whether the HDD is in a failure prediction
reporting condition after a self-test. For information on operation, see Item c.
"Pre-SMART test."