Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification

263

If the START STOP UNIT command is processed with the POWER CONDITION field set to FORCE_IDLE_0 or

FORCE_STANDBY_0, then the device server shall:

a) force the specified timer to zero, cause the logical unit to transition to the specified power condition, and return

control of the power condition to the device server; or

b) terminate a START STOP UNIT command that selects a timer that is not supported by the device server or a timer

that is not active. The device server shall terminate the command with CHECK CONDITION status with the sense

key set to ILLEGAL REQUEST and the additional sense code set to INVALID FIELD IN CDB.

It is not an error to specify that the logical unit transition to its current power condition. See 18.10.13 " Mode Page

1A (Power Control)" for more information on idle and standby power conditions.

- LoEj is not supported by the drive and must be set to 0.

- Start bit is to specify:

Note: Once the drive has become ready (after a power on), the START STOP UNIT command can

be used without any errors regardless of the state of the motor: stopped or spinning.

0 Stop the spindle

Stop the spindle