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4.1 Control/Sense Commands
Table 4.23 "Page Code" assignment for the log pages
Page Code Description Parameter Pointer
00 Supported Log Pages Ignored
01 Buffer Overrun / Underrun Page Supported
02 Write Error Counter Page Supported
03 Read Error Counter Page Supported
05 Verify Error Counter Page Supported
06 Non-medium Error Page Should be zero
0D Temperature Page Supported
0E Start-stop Cycle Counter Page Supported
0F Application Client Log Page Supported
10 Self-Test Result Log Page Supported
15 Background Medium Scan Page Supported
18 Protocol Specific Port Log Page Ignored
2F SMART Status Page Ignored
38 SMART Data Page Ignored
The "Parameter Pointer" field allows the application client to request parameter
data beginning from s specific parameter code to the maximum allocation length
or the maximum parameter code supported by the target, whichever is less. If the
value of the "Parameter Pointer" field is larger than the largest available parameter
code known to the device server for the specified page, the HDD terminates the
command with CHECK CONDITION status (ILLEGAL REQUEST [=5] / Invalid
field in CDB [=24-00]).
The "Parameter List Length" field in the CDB specifies the total number of bytes of
log parameter which can be transferred to the INIT by this command. The HDD
transfers the number of bytes of all log parameters specified in the "Page Code" field
or the portion of log parameters with the length specified in the "Parameter List
Length" field, whichever is smaller. When zero is specified in the "Parameter List
Length" field, this command is terminated without anything being transferred.
• Log parameters
This clause describes the log page structure and the log pages that are applicable to
all devices. Pages specific to each device type are described in the command
standard that applies to that device type. The LOG SENSE command returns a
single log page specified in the page code field of the command descriptor block.
For information on this parameter, see Chapter 5, "Parameter Data Format."
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