Fujitsu M2488, Руководство по эксплуатации продукта

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TAPE UNIT PARAMETERS M2488 PRODUCT GUIDE
5-12 CG00000-011503 REV. A April 1997
Table 5-13. Page 10h - Device Configuration Parameters Field Description
BYTE BIT VALUE DESCRIPTION
2 0-4 0 The Active Format field indicates the format that is to be used to record on that
medium.
This field is reported as not changeable on a MODE SENSE command, and the
default value is zero.
2 5 1
0
When set to one, the Change active Format (CAF) bit indicates that the active format
is changed to the value specified in the active format field.
The CAF bit is reported as not changeable on a MODE SENSE command, and the
default value is zero.
2
6 1
0
When set to one, the Change Active Partition (CAP) bit indicates that the logical
partition is to be changed to the one specified by the active partition field.
The CAP bit is reported as not changeable on a MODE SENSE command, and the
default value is zero.
3 0-7 0 The Active Partition indicates the current logical partition number in use on that
medium. This field is reported as not changeable on a MODE SENSE command,
and the default value is zero
4 0-7 80h The Write Buffer Full Ratio field, on WRITE commands, indicates to the target how
full the buffer is before writing data to the medium. This field is reported as not
changeable on a MODE SENSE command, and the default value is 80h.
5 0-7 40h The Read Buffer Empty Ratio field, on READ commands, indicates to the target
how empty the buffer is before retrieving additional data from the medium. This
field is reported as changeable on a MODE SENSE command, and the default value
is 40h.
6-7 0032h The Write Delay Time field indicates the maximum time, in 100 millisecond incre-
ments, the target should wait before any buffered data that is to be written, is forced
to the medium after the last buffered WRITE command that did not cause the buffer
to exceed the buffer full ratio.
This field is reported as not changeable on a MODE SENSE command, and the
default value is 0032h (5 seconds).
8 0 0 When set to zero, the Report Early Warning (REW) bit indicates that the target will
report early-warning at or before any medium defined early-warning position during
write operations, but will not report the early-warning condition for read operations.
The REW bit is reported as not changeable on a MODE SENSE command, and the
default value is zero.
8 1 0 When set to zero, the Recover Buffer Order (RBO) bit indicates that data blocks are
returned from the target’s buffer on a RECOVER BUFFERED DATA command in
First In First Out (FIFO) order.
When set to one, the RBO bit indicates that data blocks are returned from the tar-
get’s buffer on a RECOVER BUFFERED DATA command in Last In First Out
(LIFO) order.
The RBO bit is reported as changeable on a MODE SENSE command, and the
default value is 0b (FIFO).