Drive Status Light; Diagnostic Information; Logs; Usage Log - HP 3000 Series Handbook

For HP Internal Use Only
If the problem persists, replace the disk mechanism.
Drive Status Light
Table 5-44 shows drive status light indications during normal operation and fault conditions.
Table 5-44. Status Light Indications
Status Explanation
OFF This is the normal indication when the hard disk drive is
idle. This may also indicate that there is no power to the
hard disk drive.
ON
If the status light remains on more than 20 seconds after the
self-test begins, it indicates a self-test failure.
FLASHING
If the status light continues flashing at a 1 Hz rate more
(1 Hz)
than 20 seconds after the self-test begins, it indicates a
self-test failure.
FLASHING This indicates that the hard disk drive is performing its
(10 Hz) internal self-test diagnostic. This pattern should only
continue as long as the self-test is in progress.
RANDOM
The status light flashes when the hard disk drive is accessed
FLASHING
by the host. This indicates normal operation.
Diagnostic Information
The following paragraphs provide information on the hard disk drive internal status logs and
the Extended Sense data returned by the hard disk drive in response to a REQUEST SENSE
command.
The method of accessing this information depends on the diagnostic tool you are using. Refer
to the appropriate diagnostic documentation for information on retrieving device information.
Logs
There are three internal hard disk drive logs: the Usage Log, the Data Error Log, and the
Hardware Error Log. These logs are maintained in two locations: on the disk media and
is SCSI controller RAM. The controller RAM is initialized from the disk at power-on or
following a reset. During disk drive operation, the controller RAM is continually updated.
The contents of the controller RAM are only posted to the disk media when an error entry is
added.
Usage Log. The Usage Log includes the following fields: Area, Access Count, Blocks
Accessed, First Retry Count, Multiple Retry Count.
The Area field indicates which part of the hard disk media the Data Error Log is reporting on.
The Access Count field indicates the number of media accesses performed since the last
hardware error occurred, or the log was cleared. When an entry is added to the Hardware
Error Log, the contents of this field are included and this field is reset to zero. Thus, to
determine the total number of media accesses, you must add the contents of this field to
any Hardware Error Log Access Count entries. If there are no Hareware Error Log entries,
5-46 Troubleshooting