Applies to:

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Storage Platform(s) – Dell Compellent Series 40 and Dell Compellent Series 8000 storage systems with Storage Center 6.3 and greater 

Author:

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Ramamohan Reddy K

Problem:

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How to configure Synchronous Replication on Compellent?

Solution:

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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 

  1. In the Enterprise manager Client Click the Replication & Live Volumes view on the left bottom of the pane.

         

     2. In the Replications Tab choose Replicate Volumes. Then Create Replication wizard appears.

     

    3. Select the source storage center from where volumes should be replicated, then click Next

     

     4. Select the destination storage center to which volumes to be replicated and click Next

  

5. In the next wizard,select all the volumes that has be replicated and click Next

6. 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

        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 

    7. In this wizard, review and modify the replications if necessary by clicking Edit Settings, then click Finish.

    8. We can see all the configured replication in the Replications Tab