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

T a b l e 5 - 1 1 6 Persistent Reservation Type Codes and Their Meanings
0h READ Shared
WRITE
1h
Exclusive
2h READ Exclusive
Exclusive
3h
Access
4h Shared Access
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
transfer from the initiator to the disk results in a reservation conflict.
ADDITIONAL RESERVATIONS: Allowed; any initiator may reserve the log-
ical 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 initia-
tor that holds the persistent reservation that attempts a transfer to the
disk results in a reservation conflict
ADDITIONAL RESERVATIONS: Allowed; any initiator may reserve the log-
ical 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 log-
ical 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
results in a reservation conflict.
WRITES: Exclusive; any command from any initiator other than the initia-
tor 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 res-
ervation conflict. The initiator that holds the persistent reservation can re-
serve 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 res-
ervation conflict. The initiator that holds the persistent reservation can re-
serve the logical unit, extents, or elements as long as the persistent
reservations do not conflict with any reservations already known to the
device server.
SCSI Description
Maxtor Atlas 10K III 5-93