Troubleshooting the SA7x
5.4 Troubleshooting Excessive Drive Errors or a Fault Condition
5.4 Troubleshooting Excessive Drive Errors or a Fault Condition
If the system is displaying excessive drive errors or a fault condition, check to the
following resources to isolate the problem to a disk drive or enclosure FRU.
Note
When referring to error codes, note that power low or thermal errors on
any or all disk drives could indicate a problem with an enclosure FRU.
Media errors on all drives could indicate an enclosure power supply fault.
Check the power supply as explained in Sections 5.2.1 and 5.2.2.
The
DSA Troubleshooting Flowchart
has extensive information for troubleshooting
disk drives using the following resources:
•
OCP error code
—Identify the OCP error code as explained in Section 5.5.
Refer to the
SA7x Enclosure Service Manual
to interpret OCP error codes.
•
VAXsimPLUS
—Use VAXsimPLUS software to obtain theory codes
that can be referenced by VAXsimPLUS support personnel for servicing
recommendations.
•
Host error log
—Refer to the host system documentation to access the host
error log and obtain an error code. This error code determines if the problem
is with the the SA7x enclosure or an RA7x disk drive.
•
HSC console log
—If the RA7x disk drives are connected to an HSC
controller, check the HSC console log. Refer to the HSC documentation to
decode the console error log.
•
Internal drive error log
—Refer to the
RA7x Disk Drive Service Manual
and
run the RA7x disk drive utility to extract the drive error log. The
RA7x Disk
Drive Service Manual
also explains how to decode the drive error log and
obtain the error code. With this information, you can determine if the fault is
in the disk drive or an enclosure FRU.
5.5 Reading OCP Error Codes
The SA7x enclosure OCP displays error codes on the indicator set for each drive.
(Refer to Figure 5–1.) These codes provide an initial clue to a drive fault prior to
the detailed analysis provided by the drive’s internal log.
If the Fault/Set No. indicator lights to signal that the disk drive has detected a
fault:
1. Press the Fault/Set No. switch once. This causes the drive to display an error
code on the drive’s indicator set on the OCP.
2. Note the error code. The code is displayed as flashing indicators on the OCP.
Note
While in the fault mode, the OCP indicators do not retain their normal
function; they act only as error code indicators until you press the Fault/
Set No. switch a second time.
Troubleshooting the SA7x 5–5
