2TB Hard Drive

Active mode

• During the read/write and seek operations the drive is in Active mode.

Idle mode

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

Sleep mode

• The drive enters Sleep mode when the host send a Sleep command. The drive buffer is disabled. The heads are parked and the spindle is at rest during this mode. The drive will leave Sleep Mode after a Hard Reset or Soft Reset command is received. The drive exits Sleep mode when a reset command is received and enters Standby mode with all current translation parameters intact.

Idle and standby timers

• 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 disk access is necessary.