SCSI Commands
Quantum DLT 8000 Tape System
5-205
RESERVE UNIT (10) Command (56h) (continued)
Table 5–91 RESERVE UNIT (10) Command — Field Descriptions
Field
Description
3rd Pty
When set to 1, it indicates that the Third Party Device ID field is valid.
LongID
When 0, indicates that the third party device associated with the reservation
release has a number smaller than 255 and the ID value can be sent within
the CDB. If set = 1, indicates that the third party device ID is greater than 255,
the ID value within the CDB is ignored, and the parameter list length is at least
eight.
Third Party Device ID
Required and used only when the 3rdPty bit is set, in which case this field
specifies the SCSI ID of the initiator to be granted the reservation of the
logical unit. The drive preserves the reservation until one of the following
occurs:
•
It is superseded by another valid RESERVE command from the initiator;
•
It is released by the same initiator;
•
It is released by a TARGET RESET message from any initiator;
•
It is released by a TARGET RESET message from any initiator; or
•
It is released by a hard reset condition.
The drive ignores any attempt to release the reservation made by any other
initiator. For example, if ID7 sends ID2 a Third Party reservation on behalf of
ID6 (the target at ID2 gets reserved for the initiator ID6), then only ID7 can
release the target at ID2 (using a Third Party release). ID6 cannot release the
reservation even though the reservation was made on its behalf.
(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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