7.5 Drive Self-Test (DST)

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."

C141-C013

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Fujitsu MBA3147RC, MBC2036RC, MBC2073RC, MBA3300RC, MBA3073RC specifications Drive Self-Test DST