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5-76 Quantum DLT 7000 Tape System
MODE SELECT (6) / (10) Command (15h) / (55h) (continued)
Table 5–41 Disconnect / Reconnect Page - Field Descriptions
Field Name Description
PS Parameters Savable. For MODE SELECT, this bit must be 0.
Additional Page Length This field indicates the number bytes in the page. However, the value
does not include bytes 0 and 1. The length is returned in MODE SENSE
commands and must subsequently be set to the same value when
performing MODE SELECT. If the page length does not match that
expected by the drive, a CHECK CONDITION status is returned, sense key
set to ILLEGAL REQUEST.
The drive returns a CHECK CONDITION status with sense key set to
ILLEGAL REQUEST if it receives an unsupported Page Code or a Page field
with values not supported or changeable. In such cases, no parameters
are changed as a result of the command.
Buffer Full Ratio Not supported. Any value is ignored.
Buffer Empty Ratio Not supported. Any value is ignored.
Bus Inactivity Limit Not supported. Any value is ignored.
Disconnect Time Limit Not supported. Any value is ignored.
Connect Time Limit Not supported. Any value is ignored.
Maximum Burst Size This value specifies the maximum amount of data that will be
transferred without disconnecting. A value of 0 sets no limit. Any value
is in units of 512 bytes. For example, a value of 8 represents 4 Kbytes.
Values that are not multiples of 8 are rounded up to the closest multiple
of 8.