Persistent Reservation Type Codes And Their Meanings - Maxtor ATLAS 10K III Product Manual

SCSI Description
T a b l e 5 - 1 2 1 Persistent Reservation Type Codes and Their Meanings
0h READ Shared
WRITE Exclu-
1h
sive
2h READ Exclusive
Exclusive Ac-
3h
cess
4h Shared Access
5-102 Maxtor Atlas 10K III
READS: Shared; any application client on any initiator may execute com-
mands that perform transfers from the disk to the initiator.
WRITES: Prohibited; any command from any initiator that performs a trans-
fer from the initiator to the disk results in a reservation conflict.
ADDITIONAL RESERVATIONS: Allowed; any initiator may reserve the logi-
cal 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 com-
mands that perform transfers from the disk to the initiator.
WRITES: Exclusive; any command from any initiator other than the initiator
that holds the persistent reservation that attempts a transfer to the disk re-
sults in a reservation conflict
ADDITIONAL RESERVATIONS: Allowed; any initiator may reserve the logi-
cal unit, extents, or elements as long as the persistent reservations do not
conflict with any reservations already known to the device server.
READS: Exclusive; any command from any initiator other than the initiator
that holds the persistent reservation that attempts a transfer from the disk
results in a reservation conflict
WRITES: Shared; any application client on any initiator may execute com-
mands that perform transfers to the disk from the initiator.
ADDITIONAL RESERVATIONS: Allowed; any initiator may reserve the logi-
cal unit, extents, or elements as long as the persistent reservations do not
conflict with any reservations already known to the device server.
READS: Exclusive; any command from any initiator other than the initiator
holding the persistent reservation that attempts a transfer from the disk re-
sults in a reservation conflict.
WRITES: Exclusive; any command from any initiator other than the initiator
holding the persistent reservation that attempts a transfer to the disk results
in a reservation conflict.
ADDITIONAL RESERVATIONS: Restricted; any PERSISTENT RESERVA-
TION 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 com-
mands that perform transfers from the disk to the initiator.
WRITES: Shared; any application client on any initiator may execute com-
mands that perform transfers to the disk from the initiator.
ADDITIONAL RESERVATIONS: Restricted; any PERSISTENT RESERVA-
TION 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.