Quantum DLT 8000 Product Manual page 287

PERSISTENT RESERVATION IN Command (5Eh) (continued)
Table 5–64 Persistent Reservation Type Codes and Their Meanings (continued)
Code Name
5h WRITE Exclusive,
Registrants Only
6h Exclusive Access,
Registrants Only
7h - Fh Reserved
Table 5–65 represents graphically all possible combinations of Persistent Reservations
Being Attempted when Persistent Reservations are already held for each of the types of
persistent reservations.
Description
READS: Shared; any application client on any initiator may execute commands
that perform transfers from the target to the initiator.
WRITES: Exclusive; any command from an initiator that has not previously
performed a Register service action with the device server that
attempts a transfer to the target results in a reservation conflict
ADDITIONAL RESERVATIONS:
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 target results in a reservation conflict.
WRITES: Exclusive; any command from an initiator that has not previously
performed a Register service action with the device server that
attempts a transfer to the target results in a reservation conflict
ADDITIONAL RESERVATIONS:
N/A
Quantum DLT 8000 Tape System
SCSI Commands
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.
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.
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