Seagate ST680712DEG ユーザーズマニュアル

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ST1.3 Series Product Manual, Rev. C

The drive provides programmable power management to provide greater energy efficiency. The drive features 
the following power-management modes:

The drive is in Active mode during the read/write and seek operations.

Drive enters Low Power Idle mode from Performance Idle mode when the Advanced Power Management 
Level is set between FDh and 80h, and the Idle timer is reached at 2 seconds (default setting is 2 seconds). 
Disc is not spinning and heads are parked and drive accepts all commands and returns to Active mode any 
time disc access is necessary.

The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc 
access is necessary.

The drive enters Standby mode when the host sends a Standby Immediate command. If the host has set the 
standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for a 
specifiable length of time. The standby timer delay is established using a Standby or Idle command. In Standby 
mode, the

 

drive buffer is disabled, the heads are parked and the spindle is at rest. The drive accepts all 

commands and returns to Active mode any time disc access is necessary.

Each time the drive performs an Active function (such as read, write or seek), the standby timer is reinitialized 
and begins counting down from its specified delay times to zero. If the standby timer reaches zero before any 
drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the 
drive accepts all commands and returns to Active mode when disc access is necessary.

Active (operating)

Tracking

Rotating

Enabled

Idle, performance

Tracking

Rotating

Enabled

Idle, low power

Parked

Stopped

Disabled

Standby/Sleep

Parked

Stopped

Disabled