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SCSI Commands
5-38
Quantum DLT 4000 Tape Drive
LOG SELECT Command (4Ch) (continued)
Table 5–18 LOG SELECT Log Parameters Field Descriptions (continued)
Field Name
Description
TMC
(cont.)
The Current Cumulative Values are the values computed since the last reset of the
device (either via power-cycle, BUS DEVICE RESET, or SCSI RESET.
The Default Cumulative Values are the values to which each parameter is initialized
at a reset condition. Default values are zero.
By default, Current Threshold Values = Default Threshold Values.
Note that all types of parameter values are changeable via LOG SELECT.
LP
List Parameter. This bit should always be set to 0 to indicate parameter codes are
treated as data counters.
Parameter
Length
This field specifies the number of bytes of the parameter value.
Parameter
Value
This field indicates the actual value of this log parameter.
5.7.4 Error Detection Summary in LOG SELECT Pages
The host issues a LOG SENSE command to initialize host-resident software
that allows determination of:
•
The log pages used by the drive
•
The parameter codes and length of each parameter
The following conditions constitute errors in the parameter block that cause the
drive to return CHECK CONDITION with sense data set to ILLEGAL
REQUEST and additional send code INVALID FIELD IN PARAMETER LIST:
•
A page header is received with unsupported page codes
•
An incorrect log page length is specified in the page header
•
An illegal parameter code is contained in a valid page code
•
Parameter codes for a supported page are not sent in ascending order
•
The LP bit is set to 1 in the parameter control byte
•
The DS bit is set to 0 in the parameter control byte
•
The TSD bit is set to 0 in the parameter control byte
Summary of Contents for DLTtape DLT 4000
Page 1: ...DLT 4000 Tape Drive Product Manual November 10 2003 81 60043 04 ...
Page 5: ...USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT continued ...
Page 6: ......
Page 24: ...About This Manual Quantum DLT 4000 Tape Drive xxiv ...
Page 62: ...Hardware Implementation 2 28 Quantum DLT 4000 Tape Drive ...
Page 100: ...Messages 4 12 Quantum DLT 4000 Tape Drive ...
Page 264: ...SCSI Commands 5 164 Quantum DLT 4000 Tape Drive ...
Page 274: ...Appendix B EEPROM Resident Bugcheck and Event Logs B 6 Quantum DLT 4000 Tape System ...
Page 280: ...Appendix C Updating the Firmware C 6 Quantum DLT 4000 Tape Drive ...
Page 298: ...Index Index 6 Quantum DLT4000 Tape Drive ...
Page 299: ......