Release (10) Command - Field Descriptions - Maxtor ATLAS 10K III Product Manual

SCSI Description
T a b l e 5 - 1 6 4 RELEASE (10) Command — Field Descriptions
( K G N F
Third Party Release allows an initiator to release a logical unit that was previously
reserved. If the value in this field is 0, third party release is not requested. If 3rdPty
3rdPty = 1, then the device server will release the specified logical unit, but only if the ini-
tiator ID, 3rdPty bit, and third party device ID are identical when compared to the
RESERVE command that established the reservation.
If the Long ID bit is set to 1, the Parameter List Length is 8 and the eight bytes of
LongID the parameter list carry the device ID of the third party device; the contents of the
Third Party Device ID in the CDB (byte 3) are ignored.
If the Third Party Device ID value that is connected with the reservation release is
smaller than 255, the LongID bit may be 0 and the ID value sent in the CDB. If
LongID bit = 0, the Parameter List Length field also = 0. If the Third Party Device
Third Party De- ID value is greater than 255, LongID = 1.
vice ID
Device servers that support device IDs greater than 255 will accept commands with
LongID = 1; device servers that do not support IDs greater than 255 may reject
commands with LongID set = 1. Device ID formats are protocol-specific.
Parameter List The contents of this field specify the length, in bytes, of the parameter list that will
Length be transferred from the initiator to the target.
Extent The drive supports reservations only on entire logical units.
Reservation
Any value in this field is ignored by the drive.
Identification
N o t e :
5-128 Maxtor Atlas 10K III
Assuming that the RELEASE Command Descriptor Block is valid, the drive
always returns a GOOD status for this command. An actual release only hap-
pens if the initiator has the unit reserved for itself or a third-party initiator.
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