The tables in the following section show menu navigation for virtual replication using the
PowerVault Manager:
NOTE:SAS controller enclosures do not support replication.
Can you successfully use the replication feature?
Table 1. Diagnostics for replication setup: Using the replication feature
Answer
Possible reasons
Action
Yes
System functioning properly
No action required.
No
Compatible firmware revision supporting the replication feature is not running on each system that is used for replication.
Perform the following actions on each system used for virtual replication:
On the
System topic, select
Action > Update Firmware. The
Update Firmware panel opens. The Update Controller Modules tab shows firmware versions that are installed in each controller.
If necessary, update the controller module firmware to ensure compatibility with the other systems.
See the topic about updating firmware in the
Dell PowerVault ME4 Series Storage System Administrator’s Guide for more information about compatible firmware.
No
Invalid cabling connection. (If multiple enclosures are used, check the cabling for each system.)
Verify controller enclosure cabling:
Verify use of proper cables.
Verify proper cabling paths for host connections.
Verify cabling paths between replication ports and switches are visible to one another.
Verify that cable connections are securely fastened.
Inspect cables for damage and replace if necessary.
No
A system does not have a pool that is configured.
Configure each system to have a storage pool.
Can you create a replication set?
After valid cabling, and network availability, create a replication set by selecting
Action > Create Replication Set from the
Replications topic.
Table 2. Diagnostics for replication setup – Creating a replication set
Answer
Possible reasons
Action
Yes
System functioning properly.
No action required.
No
On controller enclosures equipped with iSCSI host interface ports, replication set creation fails due to use of CHAP.
If using , see the topics about configuring CHAP and working in replications within the
Dell PowerVault ME4 Series Storage System Administrator’s Guide.
No
Unable to create the secondary volume (the destination volume on the pool to which you replicate data from the primary volume).
Review event logs for indicators of a specific fault in a replication data path component. Follow any Recommended Actions.
Verify valid specification of the secondary volume according to either of the following criteria:
A conflicting volume does not exist.
Available free space in the pool.
No
Communication link is down.
Review event logs for indicators of a specific fault in a host or replication data path component.
Can you replicate a volume?
Table 3. Diagnostics for replication setup – Replicating a volume
Answer
Possible reasons
Action
Yes
System functioning properly.
No action required.
No
Nonexistent .
Determine existence of primary or secondary volumes.
If a replication set has not been successfully created,
Action > Create Replication Set on the
Replications topic to create a replication.
Review event logs (in the footer, click the events panel and select
Show Event List) for indicators of a specific fault in a replication data path component. Follow any Recommended Actions.
No
Network error occurred during in-progress replication.
Review event logs for indicators of a specific fault in a replication data path component. Follow any Recommended Actions.
Click in the
Volumes topic, and then click a volume name in the volumes list. Click the
Replication Sets tab to display replications and associated metadata.
Replications that enter the suspended state can be resumed manually (see the
Dell PowerVault ME4 Series Storage System Administrator’s 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.
Has a replication run successfully?
Table 4. Diagnostics for replication setup: Checking for a successful replication
Answer
Possible reasons
Action
Yes
System functioning properly
No action required.
No
Last Successful Run shows N/A
In the
Volumes topic, click the volume that is a member of the replication set.
Select the
Replication Sets table.
Check the Last Successful Run information.
If the replication has not run successfully, use the
PowerVault Manager to replicate as described in the topic about working in replications in the
Dell PowerVault ME4 Series Storage System Administrator’s Guide.
No
Communication link is down
Review event logs for indicators of a specific fault in a host or replication data path component.
Data is not available for the Topic
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