SCSI Commands
Quantum DLT 8000 Tape System
5-47
LOG SENSE Command (4Dh) (continued)
Table 5–19 LOG SENSE Command Descriptor Block — Field Descriptions (continued)
Field Name
Description
Page Code
The Page Code field identifies which log page is being requested by the
initiator. If the page is not supported, then the command terminates with
a CHECK CONDITION status, sense key set to ILLEGAL REQUEST, and
additional sense code of INVALID FIELD IN CDB. Supported pages are:
Page Code
Page Definition
See Section
00h
List of Supported Pages Page
5.8.2
02h
Write Error Counter Page
5.8.3
03h
Read Error Counter Page
5.8.3
07h
Last n Errors Events Page
5.8.4
2Eh
TapeAlert Page
5.8.5
32h
Compression Ratio Page
5.8.6
33h
Device Wellness Log Page
5.8.7
3Eh
Device Status Log Page
5.8.8
Parameter Pointer
The Parameter Pointer field allows the host to specify at which parameter
within a log page the requested data should begin. For example, if a
page supports parameters 0 through 5, and the Parameter Pointer
contains 3, then only parameters 3, 4, and 5 are returned to the initiator.
Similarly, if a page supports parameters 1, 3, and 6, and the Parameter
Pointer contains 2, then only parameters 3 and 6 are returned to the
initiator.
If the Parameter Pointer is larger than the highest numbered parameter
on the page, then the target terminates the command with CHECK
CONDITION status, sense key set to ILLEGAL REQUEST, and additional
sense code set to INVALID FIELD IN CDB.
Note that parameters within a page are always returned in ascending
order according to parameter code.
If the target does not support a parameter code within this page then it
does not return any data associated with this parameter.
Allocation Length
This field specifies the maximum number of bytes that the initiator
has allocated for returning data. The host uses this field to limit the
size of data transfers to its own internal buffer size.
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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