Physical/Electrical Specifications; Powerchoice Tm Power Management - Seagate ST300MP0004 Product Manual

7.0

Physical/electrical specifications

This section provides information relating to the physical and electrical characteristics of the drive.
7.1 PowerChoice
Drives using the CSS architecture have limited power management capability.
The table below lists the supported PowerChoice modes. The further you go down in the table, the more power
savings you get.
PowerChoice modes
Mode Description
Idle_A Reduced electronics
Idle_B N/A
Idle_C N/A
Standby_Y N/A
Standby_Z Motor stopped (disks not spinning)
PowerChoice can be invoked using only the Start Stop Unit command for drives using the CSS architecture:
• START STOP UNIT command method—Use the START STOP UNIT command (OPERATION CODE 1Bh).
This allows the host to directly transition the drive to any supported PowerChoice mode.
The REQUEST SENSE command reports the current PowerChoice state if active and also the method by
which the drive entered the PowerChoice state.
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TM
power management
Savvio 15K.3 SAS Product Manual, Rev. E