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HP C737990900 User Manual

Page 90

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90 Commands

Note that if an attempt is made to set or clear a flag that is not supported by

the drive,

CHECK CONDITION

will be reported with a sense key of

ILLEGAL

REQUEST

and additional sense of 2600h (invalid field in parameter list).

LogErr

0 Log Errors bit. This bit must be zero, indicating that the logging of informational

exception conditions within the drive is vendor-specific.

MRIE

Method of Reporting Informational Exceptions

3h This field indicates the method used by the target to report informational exception

conditions and must be set to 3. The target will report informational exception conditions

by returning a

CHECK CONDITION

status on any command. The sense key will be set to

RECOVERED ERROR

with additional sense of 5D00h (failure prediction threshold

exceeded). The command that has the

CHECK CONDITION

will complete without error

before any informational exception condition may be reported.

Interval Timer

0 Must be zero, indicating that the drive only reports an informational exception condition

once.

Report Count/Test

Flag Number

0 If the Test bit is zero, this field is the Report Count and must be zero, indicating that there

is no limit on the number of times the drive can report an informational exception

condition.

n If the Test bit is one, this field is the Test Flag Number, that is, the number of a supported

TapeAlert flag. The target will generate a test informational exception condition. As a

result, the next SCSI command after Mode Select will return

CHECK CONDITION

with a

sense key of

RECOVERED ERROR

and additional sense of 5DFFh (failure prediction

threshold exceeded - false).

The following are valid settings:
1 through 64

This sets the TapeAlert flag with this number in the Log page.

-

1 through

-

64

(FFFFFFFFh–FFFFFFC0h)

This clears the TapeAlert flag indicated by the absolute value

of the Test Flag Number.

32767 (7FFFFh)

This sets all the TapeAlert flags supported by the target in the

Log page.