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Chapter 2 TC2201 Web Interface
SCSI Bus Page
Quantum TC2201 User’s Guide 31
1 Click Buffered Tape Writes from the SCSI Bus menu.
The Buffered Tape Writes page displays (see figure 19):
Figure 23 Buffered Tape Writes
Page
Buffered Tape Writes can be enabled or disabled. The default setting is
enabled. Buffered Tape Writes is an option designed to enhance system
performance. By returning status on consecutive write commands prior
to the tape device receiving data, Buffered Tape Writes remove the
latency of waiting for responses from the tape device. In the event that
data does not transfer correctly for any reason, the router will return a
check condition on a subsequent command.Commands other than
Write(6) are not issued until status is received for any pending write.
Also, status is not returned until the device completes the command. For
instance, when a synchronizing command is sent to a drive, such as
sending a Write File mark, a good status means all prior commands have
been successfully completed and data has been successfully written to the
medium. This is appropriate for such tasks as file backup/restore.
Note: If an application requires confirmation of individual blocks
being written to the medium, such as audit trail tapes or log
tapes, this option should be disabled.