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LOG SENSE
TMC: The threshold met criteria (TMC) field defines the binary relationship between the cumulative and threshold
log parameter values under which the threshold is met. If the ET bit is one and the threshold condition is met, a Unit
Attention condition shall be posted to all initiators. When reporting the unit attention condition, the target shall set the
sense key to UNIT ATTENTION, the additional sense code to LOG EXCEPTION, and the additional sense code
qualifier to THRESHOLD CONDITION MET.
The TMC field is the same for both the cumulative and threshold parameter. Thus when the TMC field is set to a
value by the initiator, this value is returned for both cumulative and threshold values of the log parameter.
LP: The LP bit field defines whether the parameter is a data counter or a list parameter. See the description of each
supported page below for information on the setting of this field.
Note: If any of the other bit-fields in the control byte are set then the command will terminate with a CHECK
CONDITION status with a sense key of ILLEGAL REQUEST and an additional sense code of INVALID FIELD IN
PARAMETER LIST
6.6.3. Supported Log Pages
The following log pages are supported:
Page Code
00h
Supported Log Pages
02h
Write Error Counter Page
03h
Read Error Counter Page
07h
Last n Error Events Page
30h
Tape Log Page (Sony Unique)
31h
Tape Capacity Log Page
33h
Drive Usage Log Page (Sony Unique)
34h
Write Frame Error Counter Page
35h
Read Frame Error Counter Page
39h
Transfer Log Page
3Ch
AIT Log Page
A description of each supported log page is given below.
6.6.3.1.
Summary List of Supported Pages
The summary list of supported log pages returns the list of page codes supported by the target. This page is only
valid for the Log Sense command and if sent to the host during a Log Select command will cause termination with
CHECK CONDITION status with sense key set to ILLEGAL REQUEST and additional sense code of INVALID
FIELD IN PARAMETER LIST.
SONY AIT-E Turbo drive SDX-250V series Ver.1.0
Table 6-10: Threshold Met criteria
TMC
Threshold Met Criteria
00b
Any update of the parameter
01b
Cumulative = Threshold
10b
Cumulative < > Threshold
11b
Cumulative > Threshold
Table 6-11: Supported Log pages
Description
6.Command Specification
Allocation Length
12h
20h
20h
1A8h (max.)
5Ch
24h/404h( 404h–AIT mode)
8Eh
3Ch
4Ch
5Ch
90h X Partition_number +4
6-15
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