User Manual

SCSI Commands Reference Manual, Rev. J 351
www.seagate.com Parameters for direct access devices
5.2.16 Power Condition Transitions log page (1Ah/00h)
5.2.16.1 Overview
Using the format shown in table 330, the Power Condition Transitions log page (page code 1Ah) provides a count of the
occurrences of power condition transition events using the parameter codes listed in table 330.
Table 330 Power Condition Transitions log page parameter codes
Parameter
code
Description
Resettable or
Changeable
[a]
Reference
Support
requirements
0001h
Accumulated transitions to active
Never Mandatory
0002h
Accumulated transitions to idle_a
At least one
[b]
0003h
Accumulated transitions to idle_b
0004h
Accumulated transitions to idle_c
0008h
Accumulated transitions to standby_z
0009h
Accumulated transitions to standby_y
all others
Reserved
[a] The keywords in this column – Always, Reset Only, and Never – are defined in 5.2.2.3.
[b] If the Power Conditions Transitions log page is supported, at least one of these parameter codes shall be supported.