IBM TotalStorage Ultrium T800, Руководство оператора

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– If the test fails, replace the drive (see “Removing a SCSI Drive from an
Enclosure” on page 93).
v
If the error does not occur, connect one drive at a time back to the bus and
repeat step 3 for each drive until you can identify which drive is defective.
Note: Ensure that the SCSI terminator is always on the last drive on the
SCSI bus.
4.
Determine if the problem is with only one drive or with two or more drives.
v If the problem is with only one drive, run the SCSI wrap test on that drive
(see “Function Code 6: Run SCSI Wrap Test” on page 37).
– If the test runs successfully, replace the SCSI terminator first, then the
SCSI cable to that drive and interposer (if installed).
– If the test fails, replace the drive (see “Removing a SCSI Drive from an
Enclosure” on page 93).
v If the problem is with two or more drives, locate the first drive that has the
error and replace the SCSI cable that connects the drive and the interposer (if
installed).
Fixing an Intermittent Error with a Single Drive on a SCSI Bus
1. Replace the SCSI terminator on the drive.
2.
Run the operation that caused the error. If the problem persists, the problem
may be with the cable.
3. Isolate which cable is causing the problem by replacing one cable at a time and
running the operation that caused the error after each replacement. If the
problem persists after all cables have been replaced, the problem may be with
the drive.
4. Replace the drive (see “Removing a SCSI Drive from an Enclosure” on page
93). If the problem persists, the problem is with your server. Consult your
server’s documentation.
Fixing an Intermittent Error with Multiples Drives on a SCSI Bus
Refer to the server’s error logs to determine which drive is the source of the
problem:
v
If only one drive is reporting a SCSI failure, replace that drive (see “Removing a
SCSI Drive from an Enclosure” on page 93).
v
If multiple drives are reporting SCSI failures, the problem may be with the
terminator or the SCSI cables:
– Replace the terminator and run the operation that caused the error. If the
problem persists, the problem may be with the cables.
– Isolate which cable is causing the problem by replacing one cable at a time
and run the operation that caused the error after each replacement.
Resolving Problems
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