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Chapter 4: SCSI Commands
4-22
July 2004
81-81276-01 Rev A01
Parameter codes 00h, 01h, and 04h always return a value of 0.
N
OTE
:
The parameter value for code 05h is 8 bytes; the parameter length is set
to 8.
4.7.4 Error Detection Summary in LOG SELECT Pages
The host issues a LOG SELECT command to initialize host-resident software, which allows the host to
determine the following pages or codes:
•
The pages the tape drive uses.
•
The parameter codes and length of each parameter.
The following conditions constitute errors in the parameter block; they cause the tape drive to return
CHECK CONDITION, with the Sense Key set to ILLEGAL REQUEST, and Additional Sense Code
INVALID FIELD IN PARAMETER LIST:
•
The tape drive receives a page header containing unsupported page codes.
•
The page header includes an incorrect log page length.
•
A valid page code contains an illegal parameter code.
•
The initiator did not send parameter codes for a supported page in ascending order.
•
LP bit is 1 in the parameter control byte.
•
DS bit is 0 in the parameter control byte.
•
TSD bit is 0 in the parameter control byte.
Table 4-13.
Supported Parameter Codes
Parameter Code
Parameter Length
Description
00h
04h
Errors corrected with substantial delays
01h
04h
Errors corrected with possible delays
02h
04h
Total rewrites or rereads
03h
04h
Total errors corrected
04h
04h
Total times correction algorithm processed
05h
04h
Total bytes processed
06h
04h
Total uncorrected errors
8000h
04h
Vendor Unique
Summary of Contents for DLTtape DLT1
Page 1: ...DLT1 VS80 SCSI Interface Guide...
Page 6: ...DLT1 VS80 SCSI Interface Guide vi July 2004 81 81276 01 Rev A01 Notes...
Page 12: ...Table of Contents xii July 2004 81 81276 01 Rev A01 Notes...
Page 16: ...List of Figures xiv July 2004 81 81276 01 Rev A01 Notes...
Page 20: ...List of Tables xviii July 2004 81 81276 01 Rev A01 Notes...
Page 24: ...Chapter 1 Introduction 1 4 July 2004 81 81276 01 Rev A01 Notes...
Page 32: ...Chapter 2 General SCSI Bus Operation 2 8 July 2004 81 81276 01 Rev A01 Notes...
Page 42: ...Chapter 3 SCSI Messages 3 10 July 2004 81 81276 01 Rev A01 Notes...
Page 181: ......