Avaya Definity SI, Maintenance Manual, Page: 2412 / 2968

Maintenance Object Repair Procedures
555-233-123 10-1626 Issue 4 May 2002
Tape Block Error Test (#692)
This test is performed by rereading the list of tape blocks that have been reported
by the software to contain correctable (Error Type #2049) or uncorrectable (Error
Type #1793) block errors.
A correctable tape error is one in which a block error is detected but corrected
during a read or write to the tape. This type of error may be caused by either a soft
tape error (for example, the tape head is jiggled while reading or writing data) or
by a hard tape error (for example, a scratch or a hole in the tape that affects only
a single sector of the tape).
An uncorrectable tape error is one in which a block error persists during a read
or write operation to the tape. Errors of this type are unable to be corrected by
several attempts at rereading or rewriting the block on the tape. This type of error
is most likely the result of one or more hard errors on the tape (for example, a
scratch or a hole in the tape that spans multiple sectors).
This test passes only if no block errors of any type are detected after the test
completes. Otherwise, the test fails and returns an error code of the form “x0y,”
where:
x indicates the number of uncorrectable block errors detected by the test
[0-5]
y indicates the number of correctable block errors detected by the test [0-5]
The software stores the block location for at most five errors of each type.