Using The Remote Replication; Premium Feature - Dell PowerVault MD3620f Command Line Interface Manual

Using the Remote Replication

Premium Feature

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. Virtual disks on one storage array are replicated to virtual disks
on another storage array across a fabric SAN. Data transfers can be
synchronous or asynchronous. You choose the method when you set up the
remote replicated pair. The data transfers occur at Fibre Channel speeds to
maintain data on the different storage arrays. Because Remote Replication is
storage based, it does not require any server overhead or application overhead.
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.
Using the Remote Replication Premium Feature
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