HP Surestore E Disk Array XP256 HP XP P9000 External Storage Access Manager Us - Page 71

HP Surestore E Disk Array XP256 Manual

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The following table lists the general errors that can occur and the corrective action to take for each error. Error Corrective action The RWC computer hangs, or ESAM does • Make sure that the problem is not being caused by the RWC computer not function properly. or Ethernet hardware or software. Restart the RWC computer-this does not affect storage system operations. • Make sure that ESAM requirements and restrictions are met. • Make sure that the primary and secondary storage systems are powered on and fully operational (NVS, cache). • Check all input values and parameters to make sure that you entered the correct information in RWC (for example, secondary storage system S/N, path parameters, P-VOL and S-VOL IDs). • If you are using Performance Monitor, refrain from using it. An initiator channel-enable LED indicator Please call the HP Support Center for assistance. (on the P9500 control panel) is off or flashing. The status of the pairs and/or data paths Make sure the correct CU is selected. are not shown correctly. An ESAM error message appears on the Resolve the error and then try the operation again. RWC computer. The data path status is not Normal. Check the path status on the RCU Status dialog box and resolve the error. For more information, see the HP XP P9000 Continuous Access Synchronous User Guide. Quorum disk failure The primary or secondary storage system issues a SIM when a failure occurs in the quorum disk. After checking the SIM, review "Disaster recovery" (page 51), and specifically, see "Recovery from quorum disk failure" (page 57). Paircreate or pairresync operation resulted • If the timeout error was caused by a hardware failure, a SIM is in a timeout error. generated. Check the SIM, then call the HP Support Center. After you have corrected the problem, retry the operation. • If no SIM is generated, wait 5 or 6 minutes, then check the pair status. If the status is changed to PAIR, the operation completed after the timeout. If pair status did not change to PAIR, heavy workload might have prevented the operation from being completed. In this case, retry when the storage system has a lighter workload. • If a communication error between the RWC computer and SVP occurs, correct the error. For more information about correcting error between the RWC computer and SVP, see the HP XP P9000 Remote Web Console User Guide. There is a pinned track on an ESAM volume or the quorum disk. See "Recovery of data stored only in cache memory" (page 75). Cannot downgrade the firmware. To downgrade the firmware to a version that does not support ESAM, complete the steps described in "Planned outages for system components" (page 46), and then perform the downgrade. Though no failure occurred, the P-VOL is When the storage system has a heavy workload, the multipath software offline, or host I/O switched to the S-VOL. turns the P-VOL offline. This does not mean that there is a failure, it is an expected occurrence. You can reduce the possibility of this happening by adding additional parity groups, cache memory, and/or disk adapters. However, first make certain that no failure has occurred on the primary or secondary storage system, quorum disk, the host, or with cabling. Troubleshooting general errors 71

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The following table lists the general errors that can occur and the corrective action to take for each
error.
Corrective action
Error
The RWC computer hangs, or ESAM does
not function properly.
•
Make sure that the problem is not being caused by the RWC computer
or Ethernet hardware or software. Restart the RWC computer—this does
not affect storage system operations.
•
Make sure that ESAM requirements and restrictions are met.
•
Make sure that the primary and secondary storage systems are powered
on and fully operational (NVS, cache).
•
Check all input values and parameters to make sure that you entered
the correct information in RWC (for example, secondary storage system
S/N, path parameters, P-VOL and S-VOL IDs).
•
If you are using Performance Monitor, refrain from using it.
Please call the HP Support Center for assistance.
An initiator channel-enable LED indicator
(on the P9500 control panel) is off or
flashing.
Make sure the correct CU is selected.
The status of the pairs and/or data paths
are not shown correctly.
Resolve the error and then try the operation again.
An ESAM error message appears on the
RWC computer.
Check the path status on the
RCU Status
dialog box and resolve the error.
The data path status is not Normal.
For more information, see the
HP XP P9000 Continuous Access Synchronous
User Guide
.
The primary or secondary storage system issues a SIM when a failure occurs
in the quorum disk. After checking the SIM, review
“Disaster recovery”
Quorum disk failure
(page 51)
, and specifically, see
“Recovery from quorum disk failure”
(page 57)
.
Paircreate or pairresync operation resulted
in a timeout error.
•
If the timeout error was caused by a hardware failure, a SIM is
generated. Check the SIM, then call the HP Support Center. After you
have corrected the problem, retry the operation.
•
If no SIM is generated, wait 5 or 6 minutes, then check the pair status.
If the status is changed to PAIR, the operation completed after the timeout.
If pair status did not change to PAIR, heavy workload might have
prevented the operation from being completed. In this case, retry when
the storage system has a lighter workload.
•
If a communication error between the RWC computer and SVP occurs,
correct the error.
For more information about correcting error between the RWC computer
and SVP, see the
HP XP P9000 Remote Web Console User Guide
.
See
“Recovery of data stored only in cache memory” (page 75)
.
There is a pinned track on an ESAM
volume or the quorum disk.
To downgrade the firmware to a version that does not support ESAM,
complete the steps described in
“Planned outages for system components”
(page 46)
, and then perform the downgrade.
Cannot downgrade the firmware.
When the storage system has a heavy workload, the multipath software
turns the P-VOL offline. This does not mean that there is a failure, it is an
expected occurrence.
Though no failure occurred, the P-VOL is
offline, or host I/O switched to the S-VOL.
You can reduce the possibility of this happening by adding additional parity
groups, cache memory, and/or disk adapters.
However, first make certain that no failure has occurred on the primary or
secondary storage system, quorum disk, the host, or with cabling.
Troubleshooting general errors
71