Product manual

3.4.12 Release command (17

)

When an initiator that had reserved the drive using the Reserve com-

mand issues the Release command, it cancels the reservation. If the

drive is not currently reserved and it receives a Release command, the

drive returns a good status.

Bit

Byte

7 6 5 4 3 2 1 0

0 0 0 0 1 0 1 1 1

1 LUN 3rd pty 3rd party device ID Extent

2 0 0 0 0 0 0 0 0

3 0 0 0 0 0 0 0 0

4 0 0 0 0 0 0 0 0

5 0 0 0 0 0 0 Flag Link

Byte 1 If the

3rd pty

bit is 0, the initiator releases its own reservation. If

the 3rd pty bit is 1, the initiator releases the drive for another

initiator. An initiator can only release a third party reservation that

it made. The SCSI ID of the third-party initiator is specified in the

3rd party device ID

field.

The

extent

bit must always be 0. The drive does not support

extent reservations. If the extent bit is 1, the drive generates a

check condition status.

52 ST3655 Family SCSI Drives Product Manual, Rev. A