Quantum TC2201 manual Buffered Tape Writes

Chapter 2 TC2201 Web Interface

SCSI Bus Page

1Click 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.

Quantum TC2201 User’s Guide 31