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3 Functional Description
Thresholds During a Write Operation
In start/stop mode, the motion threshold controls the starting and stopping of tape motion. In streaming mode, the reconnect threshold controls the rate of disconnects and reconnects between the tape drive and the initiator. The values of both of these thresholds can be changed with a MODE SELECT command.
Motion Threshold
In a start/stop write operation, the
The buffer allows the tape drive to operate with fewer starts and stops, reducing wear on the tape and the tape drive.
Reconnect Threshold
In a streaming write operation, the
For the tape drive to continue streaming, the initiator must begin sending data again before the buffer is empty. The reconnect threshold value represents the minimum amount of free space that must be in the tape drive’s
May 1994 | ||
| (Standard and XL) |
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