Chapter 7
Troubleshooting
61
Answer
Possible reasons
Actions
Yes
System functioning properly.
No action required.
No
Remote Snap is not licensed on each
controller enclosure used for replication.
Verify licensing:
l
In the SMU, select Maintenance > Support > Licensing. If the
replication feature is not enabled, obtain and install a valid
license.
l
For more information on licensing, see the topic about installing
a license in the Storage Management Guide.
No
Nonexistent replication set.
l
Determine existence of primary or secondary volumes.
l
If a replication set has not been successfully created, use the
Remote Replication actions provided in Provisioning > Volumes
> Data Protection > Add Data Protection of the SMU to create
one.
l
Review alerts for indicators of a specific fault in a replication
data path component. Follow any recommended actions.
No
Network error occurred during in-progress
replication.
l
Review alerts for indicators of a specific fault in a replication
data path component. Follow any recommended actions.
l
In the SMU, select Provisioning > Volumes, select the applicable
volume, click the
icon, and select the Replications tab to see
replication details.
l
Replications that enter the suspended state can be resumed
manually (see the Storage Management Guide for additional
information).
No
Communication link is down.
Review event logs for indicators of a specific fault in a host or
replication data path component.
Table 21 Diagnostics for replication setup: Replicating a volume
Has a replication run successfully?
Answer
Possible reasons
Actions
Yes
System functioning properly.
No action required.
No
Last Successful Run shows N/A.
l
In the SMU, select Provisioning > Volumes, select the applicable
volume, click the
icon, and select the Replications tab to see
Last Successful Run information.
l
If a replication has not run successfully, use the SMU to replicate
as described in the Storage Management Guide.
No
Communication link is down.
Review event logs for indicators of a specific fault in a host or
replication data path component. Follow any recommended actions.
Table 22 Diagnostics for replication setup: Checking for a successful replication
Resolving voltage and temperature warnings
1. Check that all of the fans are working by making sure that the Fan Fail/AC Fail/DC Fail LEDs on each PCM are off, or
by using the SMU to check enclosure health status.
See the topic about options available for performing basic fault isolation methodology steps for a description of
health status icons and alternatives for monitoring enclosure health.
2. Make sure that all modules are fully seated in their slots with latches locked.
3. Make sure that no slots are left open for more than two minutes.
If you need to replace a module, leave the old module in place until you have the replacement, or use a blank module
to fill the slot. Leaving a plug-in module slot open negatively affects the airflow and can cause the enclosure to
overheat.