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Quantum DLT 7000 Tape System 5-119
MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)
Table 5–57 Device Configuration Page - Field Descriptions
Field Name Description
PS Parameters Savable. Not supported; must be 0.
Additional Page Length This field indicates the number of bytes in the page. Note that this
value does not include bytes 0 and 1. The length is returned on
MODE SENSE and must subsequently be set to the same value when
performing MODE SELECT.
CAP Change Active Partition. Not supported.
CAF Change Active Format. Not supported.
Active Format Not supported.
Active Partition This field indicates the current logical partition number in use. Only
partition 0 is supported.
WRITE Buffer Full Ratio Indicates how full the buffer should be before restarting writing to
the medium. The tape drive sets this to 0 (unused) since it uses an
automatic adaptive mechanism to dynamically adjust its ratio
according to the average data rates over the SCSI bus.
READ Buffer Empty Ratio Indicates how empty the buffer should be before restarting reading
from the medium. The tape drive sets this to 0 (unused) since it uses
an automatic adaptive mechanism to dynamically adjust its ratio
according to the average data rates over the SCSI bus.
WRITE Delay Time Indicates the maximum time (in 100 ms increments) the drive waits
with a partially fully buffer before forcing the data to tape. Note that
the buffer full/empty ratio, which is dynamic, can cause data to be
written sooner than the WRITE delay time value indicates. The WRITE
delay time defaults to 200 ms (C8h). This causes the buffer to be
flushed in 20 seconds. Minimum value is 15 (Fh); maximum value is
6500 (1964h). This represents a range in delay from 1.5 seconds to
11 minutes.
DBR Data Buffer Recovery. Not supported, must be 0.
BIS Block Identifiers Supported. Set to 1.
RSmk Report Setmarks. Not supported, must be 0.
AVC Automatic Velocity Control. Set to 0.