Maxtor 10K V manual 116PERSISTENT Reservation OUT Parameter List-Data Format, Registrants

Code	Name	Description
		READS: Shared; any application client on any initiator may execute commands that
		perform transfers from the disk to the initiator.
		WRITES: Shared; any application client on any initiator may execute commands that
		perform transfers to the disk from the initiator.
4h	Shared Access	ADDITIONAL RESERVATIONS: Restricted; any PERSISTENT RESERVATION
		OUT command with the Reserve service action from any initiator other than the initiator
		holding the persistent reservation results in a reservation conflict. The initiator that
		holds the persistent reservation can reserve the logical unit, extents, or elements as long
		as the persistent reservations do not conflict with any reservations already known to the
		device server.
		READS: Shared; any application client on any initiator may execute commands that
		perform transfers from the disk to the initiator.
	WRITE	WRITES: Exclusive; any command from an initiator that has not previously performed
5h	Exclusive,	a Register service action with the device server that attempts a transfer to the disk results
		in a reservation conflict
	Registrants Only
		ADDITIONAL RESERVATIONS: Allowed; any initiator may reserve the logical unit,
		extents, or elements as long as the persistent reservations to not conflict with any reser-
		vations already known to the device server.
		READS: Exclusive; any command from an initiator that has not previously performed
		a Register service action with the device server that attempts a transfer from the disk re-
		sults in a reservation conflict.
	Exclusive	WRITES: Exclusive; any command from an initiator that has not previously performed
6h	Registrants	a Register service action with the device server that attempts a transfer to the disk results
		in a reservation conflict
	Only	ADDITIONAL RESERVATIONS: Allowed; any initiator may reserve the
		logical unit, extents, or elements as long as the persistent reservations
		to not conflict with any reservations already known to the device
		server.
7h - Fh	Reserved	N/A

The PERSISTENT RESERVATION OUT command requires a parameter list, illustrated in Table 5-116 and defined in Table 5-117. Each of the fields of the parameter list are sent for every PERSISTENT RESERVATION OUT command, even if the field is not required for the specific Service action and/or Scope values

Table 5-116PERSISTENT RESERVATION OUT Parameter List-Data Format

Byte	Bit	7	6	5		4	3	2	1	0
0 – 7		(MSB)				Reservation Key
										(LSB)
8 – 15		(MSB)			Service Action Reservation Key
										(LSB)
		(MSB)				Scope-Specific Address
16 – 19										(LSB)
20						Reserved				APTPL
21						Reserved

5-88 Maxtor Atlas 10K V