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SCSI Commands
5-154
Quantum DLT 8000 Tape System
PERSISTENT RESERVATION OUT Command (5Fh) (continued)
Table 5
–
68 presents the definitions of the characters of the available “Type” values from
the Type field of the PERSISTENT RESERVATION IN Read Reservations parameters.
Each of the codes provides handling instructions for READ operations, for WRITE
operations, and for subsequent attempts to establish persistent reservations (referred to
as “Additional Reservations Allowed” in the table).
Table 5–68 Persistent Reservation Type Codes and Their Meanings
Code
Name
Description
0h
READ Shared
READS: Shared; any application client on any initiator may execute commands
that perform transfers from the target to the initiator.
WRITES: Prohibited; any command from any initiator that performs a transfer
from the initiator to the target results in a reservation conflict.
ADDITIONAL RESERVATIONS:
Allowed; any initiator may 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.
1h
WRITE Exclusive
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 any initiator other than the initiator that
holds the persistent reservation that attempts a transfer to the target
results in a reservation conflict
ADDITIONAL RESERVATIONS:
Allowed; any initiator may 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.
2h
READ Exclusive
READS: Exclusive; any command from any initiator other than the initiator that
holds the persistent reservation that attempts a transfer from the
target results in a reservation conflict
WRITES: Shared; any application client on any initiator may execute commands
that perform transfers to the target from the initiator.
ADDITIONAL RESERVATIONS:
Allowed; any initiator may 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.
(continued)
Summary of Contents for DLTtape DLT 8000
Page 1: ...DLTTM 8000 Tape System Product Manual Nov 10 2003 81 60118 06...
Page 5: ...USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT continued...
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Page 26: ...Table of Contents xxiv Quantum DLT 8000 Tape System...
Page 36: ...About This Manual Quantum DLT 8000 Tape System xxxii...
Page 54: ...General Description and Specifications 1 18 Quantum DLT 8000 Tape System...
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Page 376: ...Appendix A Definition of Vendor Unique Sense Data Information A 4 Quantum DLT 8000 Tape System...
Page 386: ...Appendix C Updating the Firmware C 6 Quantum DLT 8000 Tape System...
Page 396: ...Appendix E Visual Inspection Procedure for DLTtape Cartridges E 8 Quantum DLT 8000 Tape System...
Page 406: ...Appendix G DLT 7000 Emulation Feature G 8 Quantum DLT 8000 Tape System...
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