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SCSI Commands
5-178
Quantum DLT 8000 Tape System
RELEASE UNIT (10) Command (57h) (continued)
Table 5–81 RELEASE UNIT (10) Command — Field Descriptions
Field
Description
3rdPty
Third Party Release allows an initiator to release a logical
unit that was previously reserved. If the value in this field is
0, third party release is not requested. If 3rdPty = 1, then
the device server shall release the specified logical unit, but
only if the initiator ID, 3rdPty bit, and third party device ID
are identical when compared to the RESERVE command
that established the reservation.
LongID
If the Long ID bit is set to 1, the Parameter List Length is 8
and the eight bytes of the parameter list carry the device ID
of the third party device; the contents of the Third Party
Device ID in the CDB (byte 3) are ignored.
Third Party Device ID
If the Third Party Device ID value that is connected with the
reservation release is smaller than 255, the LongID bit may
be 0 and the ID value sent in the CDB. If LongID bit = 0, the
Parameter List Length field also = 0. If the Third Party
Device ID value is greater than 255, LongID = 1.
Device servers that support device IDs greater than 255 will
accept commands with LongID = 1; device servers that do
not support IDs greater than 255 may reject commands
with LongID set = 1. Device ID formats are protocol-
specific.
Parameter List Length
The contents of this field specify the length, in bytes, of the
parameter list that will be transferred from the initiator to
the target.
Extent
The drive supports reservations only on entire logical units.
The value must be 0.
Reservation Identification
Any value in this field is ignored by the drive.
NOTE:
Assuming that the RELEASE UNIT (10) Command Descriptor Block is valid, the
drive always returns a GOOD status for this command. An actual release only
happens if the initiator has the unit reserved for itself or a third-party initiator.
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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