Fujitsu M2488, Руководство по эксплуатации продукта

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TAPE UNIT SCSI COMMANDS M2488 PRODUCT GUIDE
4-50 CG00000-011503 REV. A April 1997
Data is transferred in the mode selected by the MODE SELECT command.
4-3.11.2 LOOP WRITE TO READ CHECK CONDITION Status
This control unit implements both fixed-block and variable-block modes. If the Fixed bit is one
and the current mode is variable (as set by MODE SELECT command or default power on condi-
tion) the command is rejected with a CHECK CONDITION and a sense key of ILLEGAL
REQUEST. If the Fixed bit is zero, the LWR command operates in variable block mode regardless
of the current mode set by MODE SELECT.
If the LWR operation fails, CHECK CONDITION status is generated and the sense key is set to
HARDWARE ERROR.
4-3.11.3 LOOP WRITE TO READ Sense Keys
One of the following sense keys may be returned if a CHECK CONDITION was indicated:
SENSE KEY CONDITION DESCRIPTION
1h RECOVERED ERROR 1. Recovery was performed when transferring data from the initia-
tor.
2. Recovery was performed when writing buffered data to tape.
3h MEDIUM ERROR Writing buffered data to tape failed due to defective tape.
4h HARDWARE ERROR 1. Transferring data from the initiator failed due to a hardware
failure.
2. Writing buffered data to tape failed due to a hardware failure.
3. The loop write to read operation failed.
5h ILLEGAL REQUEST 1. Reserved bit was found set in the CDB of the LWR command.
2. The Fixed bit was set to one, but the current mode is variable
(as set by MODE SELECT or default power on condition).
3. The Flag bit was set but the Link bit was not set.
6h UNIT ATTENTION Indicates the LOOP WRITE TO READ command was not per-
formed due to one of the following:
1. The tape cartridge may have been changed.
2. The target has been reset.
3. The Mode parameters have been changed by another initiator.
4. The version of the microcode has been changed (microcode
downloaded).
5. A cartridge was loaded with a tape length that is too long or too
short.
Bh ABORTED COMMAND LWR command was aborted.
Dh VOLUME OVERFLOW Buffered write data could not be written to tape because physical
End-of-Tape has been reached.