Pre-execution checks, Changeable parameters, Device configuration page – HP Q153090901 User Manual
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MODE SELECT 15h/55h
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Device Configuration page
The drive supports the Device Configuration page, which has the following format:
Pre-execution checks:
The only check made when this page is sent in Mode Select data is Parameter List.
Changeable parameters:
7
6
5
4
3
2
1
0
0
PS (0)
Rsvd (0)
Page Code {10h}
1
Additional Page Length {0Eh}
2
Rsvd(0)
Obsolete
CAF (0)
Active Format (0)
3
Active Partition (0)
4
Write Buffer Full Ratio (0)
5
Read Buffer Empty Ratio (0)
6
(MSB)
Write Delay Time: 012Ch
7
(LSB)
8
DBR (0)
BIS (1)
RSmk(0) AVC (0)
SOCF (00)
RBO(0) REW (0)
9
Gap Size (0)
10
EOD Defined (000)
EEG (1)
SEW (1)
Reserved (0)
11
(MSB)
Buffer Size at Early Warning (0)
12
13
(LSB)
14
Select Data Compression Algorithm [1]
15
Reserved
(0)
WTRE
OIR
Rewind on Reset [0] ASOCW
P (0)
PERSWP
(0)
PRMWP
(0)
Write Delay
Time
This field can be modified by a MODE SELECT command, and this change will be
reflected in a subsequent MODE SENSE command. However the actual value used as the
delay time will remain as zero, and so the data in the buffer will never be flushed. The
default value is zero.
0
The drive will never flush buffered data to tape as a result of a time-out.
>0 The time in 100 ms increments that the drive should wait with unwritten data in the
buffer and no activity on the interface before forcing data to tape. The delay is
timed from the completion of the preceding Write or Write Filemarks command.
Select Data
Compression
Algorithm
0
Use Scheme 2 of the LTO-DC algorithm (pass-through mode). Note that clearing
this parameter is not advised.
1
Use the default compression scheme. This is the default.