Dell EqualLogic PS6210E EqualLogic Group Manager Administrator s Guide PS Seri - Page 238
Replication to One Partner,
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• Reported size of the volume • Whether thin-provisioned or not • Estimated rate of volume changes (depends on volume usage) 2. Make sure that the primary group has enough free pool space for the local replication reserve for each replicated volume. 3. Identify a replication partner (secondary group) to store the volume replicas. This secondary group must meet the space and network connectivity requirements. 4. Verify on the primary group that the secondary group is configured as a replication partner. 5. Verify on the secondary group: • The primary group is configured as a replication partner. • The correct amount of space is delegated to the primary group for storing replicas of primary group volumes. Increase that space if necessary. 6. On the primary group, configure the volume for replication, specifying the appropriate replication space values, and verifying the replication partnership. 7. On the primary group, replicate the volume. 8. (Optional) Set up a schedule to create replicas on a regular basis. 9. Monitor each replication operation and make sure it is successful. If the replication operation is not successful, identify and correct the problem. For example, you might need to increase network bandwidth or increase replication space. 10. Monitor the number of replicas and replication space usage over time. The goal is to keep a specific number of replicas without wasting replication space. • If replicas are deleted before you reach the number of replicas you want to keep, you might want to increase the replica reserve percentage for the volume. • If you are keeping an excessive number of replicas, you might want to decrease the replica reserve percentage for the volume. Replication to One Partner One replication partner replicates volumes to another partner. For example, in Figure 15. Replication to One Partner, GroupA replicates Volume1 and Volume2 to GroupB. GroupA is the primary group, and GroupB is the secondary group. Figure 15. Replication to One Partner Replication to Multiple Partners One replication partner replicates different volumes to different partners. For example, in Figure 16. Replication to Multiple Partners, GroupA replicates Volume1 to GroupC, and GroupA replicates Volume2 to GroupB. GroupA is the primary group, and GroupB and GroupC are secondary groups. 238 About Backing Up and Protecting Your Data