HP ProLiant DL380 G5 Server - Manual (Page 46)

• Reallocation Aborts—When the physical drive is failed due to an error that occurred when the controller was
trying to reallocate a bad sector, a Reallocation Abort error occurs.
Because of the nature of magnetic disks, certain sectors on a drive may have media defects. The reallocation
area part of the drive is set aside to compensate for these defects. The array controller writes information
addressed from unusable sectors to available sectors in the reallocation area.
If the number of reallocation abort errors is not zero and the drive has failed, replace the drive. If the counter is
not zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive
replacement. If you observe that the count is increasing over time, replace the drive.
• Media Failures—When this physical drive fails due to unrecoverable media errors, a Media Failure occurs.
If the number of media failure errors is not zero and the drive has failed, replace the drive. If the counter is not
zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement.
If you observe that the count is increasing over time, replace the drive.
• Format Errors—When a format operation fails because the controller was unable to remap a bad sector, a
Format Error occurs.
If the number of format errors is not zero and the drive has failed, replace the drive. If the counter is not zero
and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you
observe that the count is increasing over time, replace the drive.
• Hardware Errors—The Hardware Errors counter records the number of times that a physical SCSI drive returned
a Hardware Error status when a SCSI command was attempted. This error status indicates unsuccessful
termination of the SCSI command. The controller typically retries this command several times before failing the
drive.
If the number of hardware errors is not zero and the drive has failed, replace the drive. If the counter is not zero
and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you
observe that the count is increasing over time, replace the drive.
• Not Ready Errors—When a physical drive returns a not ready status when it should be ready, a Drive Not
Ready Error occurs. This error could occur if a drive spins down unexpectedly or if the drive never becomes
ready after the spin up command is issued.
If the number of not ready errors is not zero and the drive has failed, replace the drive. If the counter is not zero
and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you
observe that the count is increasing over time, replace the drive.
• Bad Target Errors—When a physical drive performs an action that does not conform to the SCSI-2 port protocol,
the SCSI port is reset.
If the number of bad target errors is not zero and the drive has failed, replace the drive. If the counter is not
zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement.
If you observe that the count is increasing over time, replace the drive.
• Failed Recovery Writes—indicates whether write errors occurred while Automatic Data Recovery was being
performed to this physical drive. If a write error occurs, Automatic Data Recovery stops. These errors indicate
that the physical drive has failed.
If the number of fail recov writes is not zero and the drive has failed, replace the drive. If the counter is not zero
and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you
observe that the count is increasing over time, replace the drive.
• Self-Test Errors—Indicates if a physical drive failed its self test. The physical drive does a self test each time the
system is turned on.
If the number of self-test errors is not zero and the drive has failed, replace the drive. If the counter is not zero
and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you
observe that the count is increasing over time, replace the drive.
The above information is available for those drives that have been stamped with monitoring and performance data
enabled. The drive was stamped when it left the factory.
Statistics
This section displays statistics about a specific drive array controller physical drive. You can use the run-time statistics
to monitor the health of a specific drive.
The following information displays:
• Sectors Read—Shows the total number of sectors read from the physical drive since the drive was stamped. The
drive was stamped when it left the factory.
Agent information 46