Applies to:
Storage Platform(s) – Dell Compellent Series 40 and Dell Compellent Series 8000 storage systems with Storage Center 6.3 and greater
Author:
Ramamohan Reddy K
Problem:
How to configure Synchronous Replication on Compellent?
Solution:
Synchronous replication will be created if we want the source and destination volumes to be synchronized at all times.
To replicate a volume from one Storage Center to another Storage Center synchronously, below are the prerequisites
- Both Storages should have Storage Center versions 6.3 or above
- Both the source and destination Storage Centers must be added to the Enterprise Manager Client
- The Storage Centers must be connected using Fibre Channel or iSCSI, and each Storage Center must be defined on the other Storage Center.
- On the source Storage Center, the destination Storage Center must be defined as a remote Storage Center.
- On the destination Storage Center, the source Storage Center must be defined as a remote Storage Center.
- On the source Storage Center, a quality of service (QoS) definition must be set up for the replication
Configuring Synchronous Replication:
Synchronous replication can be configured in two modes: High consistency and high availability
- In the Enterprise manager Client Click the Replication & Live Volumes view on the left bottom of the pane.
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Figure 1: Replication & Live
- In the Replications Tab choose Replicate Volumes. Then Create Replication wizard appears.
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Figure 2: Replicate Volume
- Select the source storage center from where volumes should be replicated, then click Next
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Figure 3: Source storage center
- Select the destination storage center to which volumes to be replicated and click Next
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Figure 4: Destination storage center
- In the next wizard,select all the volumes that has be replicated and click Next
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Figure 5: Volumes that has be replicated
- In next wizard,
a) For Configuring in high consistency mode, configure the Replication attributes as
- Select Type as Asynchronous and Sync mode as High Consistency
- Select other attributes Deduplication and Replicate Active Replay if it is necessary
- Select QoS node which is created as a Prerequisite.
Select the destination volume attributesand click Next
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Figure 6: QoS node
b) For Configuring in High Availability mode, configure the Replication attributes as
- Select Type as Asynchronous and Sync mode as High Availability
- Select other attributes Deduplication and Replicate Active Replay if it is necessary
- Select QoS node which is created as a Prerequisite.
Select the destination volume attributes and click Next
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Figure 7: Destination volume attributes
- In this wizard, review and modify the replications if necessary by clicking Edit Settings, then click Finish.
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Figure 8: Review and modify the replications
- We can see all the configured replication in the Replications Tab
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Figure 9: Replications