Manualshelf

Administrator Guide

ManualsBrandsDell ManualsCompellent (SCEqualLogic PS6610X
301302303304305306307308309310
Table Of Contents
5. Activate the source cluster.
6. Recreate the replication relationship.
NOTE: You have to reinstall Dell Fluid File System (FluidFS) on the source cluster only if the source cluster is entirely
new. See the
Installation and Setup Guide
if you must recongure the source cluster.
About Promotions and Recovery Containers
If a NAS container becomes unavailable, you can promote a replica container to a recovery container, preserving host access to the
container’s data. When you promote a replica, the group converts the replica to a standalone container, called a recovery container.
The data on the recovery container will be current as of the last-completed replication.
When you promote a replica, you have the option of retaining the ability to demote it at a later time, thereby making the promotion
temporary. Or, alternatively, you can permanently promote it. When you permanently promote a replica, the system severs the
replication relationship with the source container and the destination. With temporary promotions, the system retains the replication
conguration so that it can be restored if the recovery container is later demoted.
When deciding whether to temporarily or permanently promote the replica container, use the following guidelines:
• Permanently promote the replica if the source container is unavailable or if you do not plan on restoring access to it.
• Retain the ability to demote the replica container if you plan to demote it at a later point in time.
Demotions can be performed from the destination cluster at any time, provided that the source and destination clusters can
communicate with each other. The demotion operation reestablishes the replication link with the source container.
CAUTION: When you demote a recovery container, all data written to the recovery container while it was temporarily
promoted will be lost.
Fail Over to a NAS Replica Container
When you fail over to a replica container, you convert the replica container to a recovery container.
To fail over to a replica NAS container:
1. Log in to Group Manager on the group in which the replica volume resides.
2. Click Replication, expand Replication Partners, and expand the partner group on which the source volume resides.
3. Expand NAS Replication and then expand Inbound Replica Volumes.
4. Select the replica volume that you want to promote to a NAS volume.
5. Click Promote to local volume. A conrmation message is displayed.
6. (Optional) If you want to be able to return the recovery volume to the role of replica volume after the replication, verify that the
Retain the ability to demote checkbox is selected.
7. (Optional) Select Retain Host Access Conguration to refresh the list of SMB shares and NFS exports residing on the volume.
This option is available only if Retain the ability to demote is selected.
8. Click OK.
Demote a Recovery Container
Demoting a recovery container to a replica container removes read-write access from the recovery container and reestablishes
replication with the source container.
CAUTION: When you demote a recovery container to a replica, any data written to the container while it was a recovery
container is destroyed.
1. Log in to the destination cluster.
2. Click NAS, then select the cluster containing the recovery container.
3. Expand Local Containers and select the recovery container.
4. In the Activities panel, click Demote to replica container.
5. Click OK.
About Data Recovery
303