HP Insight Management Agents - Manual (Page 97)

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Failure Indicator—Use this utility to determine the cause of failure for a failed drive. If the drive
has failed and this counter is non-zero, replace the drive. If the drive condition is OK and the
failure indicator is not zero, the drive might have an intermittent problem and you might have
to replace it. There is no other corrective action for this error.
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Self-Test Errors—Displays the number of times that a physical drive failed its self-test. The
physical drive does a self-test each time the system is turned on. The number of self-test errors
is counted from the time shown in the Service Hours item on the SCSI Physical Drive window.
If the self-test error count is not zero and the drive has failed, replace the drive. If this count
is non-zero, but the drive has not failed, it could signal an intermittent problem with the drive.
If the number of errors increases over time, replace the drive.
Drive statistics
Select a SCSI physical drive from the SCSI controller submenu to display statistics about a specific
SCSI physical drive. You can use the run-time statistics to monitor the health of a specific drive.
The following information displays:
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Sectors Read—Displays the total number of sectors read from the physical disk drive since the
time listed in the Service Hours item in the SCSI Physical Drive section.
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Sectors Written—Displays the total number of sectors written to the physical disk drive since
the time listed in the Service Hours item in the SCSI Physical Drive section.
NOTE: If sectors read and written are always zero or N/A on Microsoft Windows 2000
you must install Service Pack 2 or higher. You also must enable the logical and physical disk
performance counters. Run DiskPerf.exe -Y in a command window and then reboot the
system.
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Hard Read Errors—Displays the number of read errors that could not be recovered by a
physical drive’s ECC algorithm, retries, or any other recovery mechanism. These errors are
counted over the time listed in the Service Hours item in the SCSI Physical Drive section.
Over time, a drive might produce hard read errors. These errors are usually caused by bad
media sections on the drive.
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Hard Write Errors—Displays the number of write errors that could not be recovered by physical
drive retries. These errors are counted over the time listed in the Service Hours item in the SCSI
Physical Drive section. Over time, a drive might produce these errors. These errors are usually
caused by bad media sections on the drive.
When a hard write error occurs, the physical drive remaps the bad sector. If the physical drive
attempt to remap the sector is unsuccessful, NetWare Hot Fix Redirection logic attempts to
remap the sector. Windows NT hot fixes bad sectors on HPFS and NTFS file systems.
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Recovered Read Errors—Displays the number of read errors corrected through physical drive
retries or other drive recovery mechanisms. Over time, all drives produce these errors. The
number of errors is counted over the time shown in the Service Hours item in the SCSI Physical
Drive section.
Having a large number of retry corrected errors does not necessarily indicate that the drive
is failing. However, as a precaution, you can replace a drive that has an abnormally high
amount of errors when compared to similar drives. If the number of errors increases rapidly,
you might need to replace the drive.
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Recovered Write Errors—Displays the number of write errors corrected through physical drive
retries or other drive recovery mechanisms. Over time, all drives produce these errors. The
Storage agent 97