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Dell PowerVault MD 32XX/36XX Series Storage Arrays CLI Guide

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Using The Remote Replication Premium Feature

The following types of Remote Replication premium features are supported on the MD storage array:
Remote Replication Standard asynchronous replication using point-in-time images to batch the resynchronization between the local and remote site. This type of replication is supported on either Fibre Channel or iSCSI storage arrays (both local and remote arrays must have the same data protocol).
Remote Replication (Legacy) Synchronous (or full-write) replication that synchronizes local and remote site data in real-time. This type of replication is supported on Fibre Channel storage arrays only.

The Remote Replication premium feature provides for online, real-time replication of data between storage arrays over a remote distance. In the event of a disaster or a catastrophic failure on one storage array, you can promote the second storage array to take over responsibility for computing services. Remote Replication is designed for extended storage environments in which the storage arrays that are used for Remote Replication are maintained at separate sites.

You can use Remote Replication for these functions:
Disaster recovery Remote Replication lets you replicate data from one site to another site, which provides an exact duplicate at the remote (secondary) site. If the primary site fails, you can use replicated data at the remote site for failover and recovery. You can then shift storage operations to the remote site for continued operation of all of the services that are usually provided by the primary site.
Data vaulting and data availability Remote Replication lets you send data off site where it can be protected. You can then use the off-site copy for testing or to act as a source for a full backup to avoid interrupting operations at the primary site.
Two-way data protection Remote Replication provides the ability to have two storage arrays back up each other by duplicating critical virtual disks on each storage array to virtual disks on the other storage array. This action lets each storage array recover data from the other storage array in the event of any service interruptions.

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