User Manual

SCSI Commands Reference Manual, Rev. J 104
www.seagate.com Direct Access Block commands (SPC-5 and SBC-4)
Table 68 PCR bit, SP bit, and PC field meanings when parameter list length is zero (Sheet 1 of 2)
PCR
bit
SP
bit
PC
field
Description
0b 0b 0xb
This is not an error. The device server shall make no changes to any log parameter values and shall not
save any values to non-volatile media.
0b 1b 00b
The device server shall make no changes to any log parameter values and shall process the optional
saving of current parameter values as follows:
a) if the values are current threshold data counter parameters, then:
A) if the device server implements saving of the current threshold values, the device server shall
save all current threshold values to non-volatile media; or
B) if the device server does not implement saving of the current threshold values, the device
server shall terminate the command.
[a]
or
b) if the values are current list parameters, then:
A) if the device server implements saving of the current list parameters, the device server shall
save all current list parameters to non-volatile media; or
B) if the device server does not implement saving of the current list parameters, the device
server shall terminate the command.
[a]
0b 1b 01b
The device server shall make no change to any log parameter values and shall process the optional
saving of current parameter values as follows:
a) if the values are current cumulative data counter parameters, then:
A) if the device server implements saving of the current cumulative values, the device server
shall save all current cumulative values to non-volatile media; or
B) if the device server does not implement saving of the current cumulative values, the device
server shall terminate the command.
[a]
or
b) if the values are current list parameters, then:
A) if the device server implements saving of the current list parameters, the device server shall
save all current list parameters to non-volatile media; or
B) if the device server does not implement saving of the current list parameters, the device
server shall terminate the command.
[a]
0b xb 10b
The device server shall set all current threshold values to the vendor specific default threshold
values
[b]
and shall not save any values to non-volatile media.
0b xb 11b
The device server shall set all current cumulative values to the vendor specific default cumulative values
[b]
and shall not save any values to non-volatile media.
1b 0b xxb
The device server shall:
a) set all current threshold values to the vendor specific default threshold values;
[b]
b) set all current cumulative values to the vendor specific default cumulative values;
[b]
c) set all list parameters to their vendor specific default values; and
d) not save any values to non-volatile media.
[a] The command shall be terminated with CHECK CONDITION status, with the sense key set to ILLEGAL REQUEST,
and the additional sense code set to INVALID FIELD IN CDB.
[b] Vendor specific default threshold values and vendor specific default cumulative values may be zero.