SCSI Commands: 22BMODE SELECT
Page
88
3.10.7
Control Mode Page (0Ah)
The Control mode page specifies whether the drive generates a Check Condition
when any log parameter reaches maximum. (Refer to the LOG SELECT command
and the LOG SENSE command.) It also specifies whether tagged queuing is used
and the behavior of the drive autoload sequence.
Note that Autoload Mode persists across power cycles. Its new definition takes
effect at the next cartridge insertion after MODE SELECT.
Byte
Bits
7
6
5 4 3
2
1
0
0 Reserved
Page
Code
(0Ah)
1
Additional Page Length (0Ah)
2 TST
Reserved
D_SNS
GLTSD
RLEC
3
Queue Algorithm Modifier
Rsvd
QErr
DQUE
4 TAS
RAC
UA_INTLCK_CTRL
SWP Obsolete
5 Reserved
Autoload
Mode
6 Obsolete
7 Obsolete
8 (MSB)
9
Busy Timeout Period
(LSB)
10 (MSB)
11
Extended Self-Test Completion Time
(LSB)
3.10.7.1
Control Mode Page Field Descriptions
Field
Byte
s
Bits Description
Page Code
0
0-5
Always 0Ah, indicating the Control Mode Page.
Additional
Page
Length
1
Always 0Ah indicating that 10 parameter bytes follow the Page
Length byte.
TST 2
5-7
Always 0, indicating that Task Set Type is per logical unit for all
initiators.
D_SNS
2
2
Always 0, indicating support of the fixed format sense data.
GLTSD
2
1
Always 0, indicating that Global Logging Target Saving is enabled.
RLEC 2
0 0 = Drive does not Report Log Exception Conditions (RLEC)
(default).
1 = Drive Reports Log Exception Conditions (RLEC).
Queue
Algorithm
Modifier
3 4-7 Always 0, indicating that drive reorders the processing of incoming
Simple-attribute tasks in such a way that the data integrity is
maintained for the issuing initiator.
QErr 3
1-2
Always 0, together with TST = 0 indicating that Queue Error
management should block all tasks in the task set when error
occurs.
DQUE 3 0 Always 1 for Parallel SCSI, indicating that Tagged Queuing (DQUE)
is disabled
Always 0 for Fibre Channel, indicating that Tagged Queuing
(DQUE) is enabled.
TAS 4
7
Always 0, indicating that Task Abort Status should not be returned
to the initiator when another initiator aborts the task.
Summary of Contents for LTO 4
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