Knowledge Base

How to configure Synchronous Replication between Compellent Storage Centers


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
  1. In the Enterprise manager Client Click the Replication & Live Volumes view on the left bottom of the pane.
    Synchronous Replication 1
    Figure 1: Replication & Live
  2. In the Replications Tab choose Replicate Volumes. Then Create Replication wizard appears.
    Replicate Volume
    Figure 2: Replicate Volume
  3. Select the source storage center from where volumes should be replicated, then click Next
    Synchronous Replication 3
    Figure 3:
    Source storage center
  4. Select the destination storage center to which volumes to be replicated and click Next
    Synchronous Replication 4
    Figure 4: Destination storage center
  5. In the next wizard,select all the volumes that has be replicated and click Next
    Synchronous Replication 5
    Figure 5:
    Volumes that has be replicated
  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
    Synchronous Replication 6
    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
    Synchronous Replication 6b
    Figure 7: Destination volume attributes
  7. In this wizard, review and modify the replications if necessary by clicking Edit Settings, then click Finish.
    Synchronous Replication 7
    Figure 8: Review and modify the replications
  8. We can see all the configured replication in the Replications Tab
    Synchronous Replication 8
    Figure 9: Replications



Article ID: SLN310910

Last Date Modified: 08/14/2018 01:46 AM


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