IBM LTO Ultrium 4, Инструкция по установке и эксплуатации

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Appendix D. TapeAlert flags supported by the drive
TapeAlert is a standard that defines status conditions and problems experienced by
devices such as tape drives, autoloaders, and libraries. The standard enables a
server to read TapeAlert messages (called
flags ) from a tape drive via the SCSI bus.
The server reads the flags from Log Sense Page 0x2E.
This library is compatible with TapeAlert technology, which provides error and
diagnostic information about the drives and the library to the server. Because
library and drive firmware might change periodically, the SNMP interface in the
library does not require code changes if devices add additional TapeAlerts that are
not supported today. However, should this occur, the MIB is written to minimize
impact to the SNMP monitoring station. At the time of this writing, the TapeAlert
flags in this appendix correctly represent TapeAlerts that will be sent. The MIB file
should not be taken to mean that all traps that are defined in the MIB will be sent
by the library or that they will be sent in the future.
This appendix lists TapeAlert flags that are supported by the Ultrium Tape Drives.
Table 13. TapeAlert flags supported by the Ultrium Tape Drive
Flag
Number Flag SNMP Trap Description Action Required
3 Hard error Yes Set for any unrecoverable read,
write, or positioning error. (This
flag is set in conjunction with
flags 4, 5, or 6.) See the Action Required column
for Flag Number 4, 5, or 6 in
this table.
4 Media Yes Set for any unrecoverable read,
write, or positioning error that is
due to a faulty tape cartridge. Replace the tape cartridge.
5 Read failure Yes Set for any unrecoverable read
error where isolation is uncertain
and failure could be due to a
faulty tape cartridge or to faulty
drive hardware. If Flag 4 is also set, the cartridge
is defective. Replace the tape
cartridge.
6 Write failure Yes Set for any unrecoverable write
or positioning error where
isolation is uncertain and failure
could be due to a faulty tape
cartridge or to faulty drive
hardware. If Flag Number 9 is also set,
make sure that the write-protect
switch is set so that data can be
written to the tape (see
“Write-protect switch” on page
38). If Flag Number 4 is also set,
the cartridge is defective.
Replace the tape cartridge.
8 Not data grade No Set when the cartridge is not
data-grade. Any data that you
write to the tape is at risk. Replace the tape with a
data-grade tape.
9 Write protect No Set when the tape drive detects
that the tape cartridge is
write-protected. Ensure that the cartridge
write-protect switch is set so
that the tape drive can write
data to the tape (see
“Write-protect switch” on page
38).
© Copyright IBM Corp. 2011
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