Log Select; Command Description; Command Descriptor Block; Table 12-1: Log Select Command Descriptor Block - Tandberg Data SLR7-140 PROGRAMMER Manual

12.
BYTE BIT 7
00 Operation Code 4Ch
01 Logical Unit Number (LUN)
02
03 RESERVED
04 RESERVED
05 RESERVED
06 RESERVED
07 Parameter List Length
08
09 Control Byte
Table 12-1:

Log Select

12.1. Command Description

The LOG SELECT command is used to modify statistical
information related to the media and maintained by the
Drive or to activate surveillance thresholds to monitor
selected events in the Drive
The log information
related to drive use and write/read operations to/from
the magnetic tape.
The parameter list is transferred during the DATA OUT
phase of the command. If disconnect is allowed, the
Drive disconnects while the transferred parameters are
processed.

12.2. Command Descriptor Block

6 5
PC RESERVED
LOG SELECT Command Descriptor Block
1
Note that the log counter updates are not necessarily synchronized
with the events
comparison can not be used to monitor drive actions with any great
amount of precision.
12-1 Tandberg SLR Product Line SCSI Functional Specifications
1
.
consists
4 3
RESERVED
that they monitor.
of numerous counters
2 1
PCR
This means that threshold
0
SP