HP ProLiant DL380 G5 Server - Manual (Page 64)

• 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.
• 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:
• 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.
• 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.
• 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.
• 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.
• 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.
• 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 number of errors is counted from 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 might wish to replace a drive that has an abnormally high amount of errors when
compared to similar drives. If this count increases rapidly, you might need to replace the drive.
• Seek Errors—Displays the number of seek errors that a physical drive detects. A seek error is a seek that failed.
The number of errors is counted over the time shown in the Service Hours item in the SCSI Physical Drive
section.
Seek errors occasionally occur. Having a large number of seek errors does not necessarily indicate that the
drive is failing. However, as a precaution, you might wish to replace a drive that has an abnormally high
amount of errors when compared to similar drives. If this count increases rapidly, you might need to replace the
drive.
• ECC Corr Reads—Displays the number of times the drive used the ECC algorithm to recover data for read
requests. The number of errors is counted over the time listed in the Service Hours item in the SCSI Physical
Drive section.
ECC-corrected reads occasionally occur over time. Having a large number of ECC-corrected errors does not
necessarily indicate that the drive is failing. However, if a particular drive has an abnormally high amount of
ECC-corrected reads compared to similar drives, you might replace the drive as a precaution. If this count
increases rapidly, you might replace the drive.
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