Seagate Maxtor DiamondMax 20 160GB 8MB SATA II STM3160811AS Manual De Usuario

DiamondMax 20 Serial ATA Product Manual, Rev. A

13

The drive provides programmable power management to provide greater energy efficiency. In most systems,
you can control power management through the system setup program. The drive features the following
power-management modes:

• Active mode

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

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

• Standby mode 

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 enabled, 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.

The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive
buffer is disabled, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it
receives a Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and
enters Standby mode with all current translation parameters intact.

Each time the drive performs an Active function (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

Tracking

Rotating

Enabled

Idle

Tracking

Rotating

Enabled

Standby

Parked Stopped

Enabled

Sleep

Parked

Stopped

Disabled