Dell POWERVAULT MD3620I - Manual (Page 61)

Testing Synchronous Remote Replication
Testing remote replication displays the round trip times between the virtual disks in the replicated pair. The times are
displayed as average round trip times, shortest round trip times, and longest round trip times. To test remote replication,
click Test Replication Communication.
Changing Synchronous Remote Replication Parameters
To modify the parameters of a replicated pair, such as the synchronization priority, re-synchronization method, and write
mode, perform these steps:
1. Click Change Replication Parameters.
2. Modify the dialog box to match your requirements for the replicated pair.
Removing Synchronous Replicated Pairs
Removing a replicated pair breaks the replication association between the virtual disk at the primary site and the virtual
disk at the remote site. After the operation completes, the replication status between the virtual disks is lost. For
replication to be re-established, a full re-synchronization must occur.
Standard Remote Replication (Asynchronous)
Standard Remote Replication (non-Legacy) enables you to manage the data synchronization of data sets between local
and remote storage arrays. A data repository virtual disk is required for each replicated pair of virtual disks. Standard
Remote Replication supports both iSCSI and Fibre Channel storage arrays. A Remote Replication group contains several
replicated pairs that you can manage as one entity. A replicated pair consists of a primary (local) virtual disk and a
secondary (remote) virtual disk. Both virtual disks contain identical copies of the same data. Write operations are
performed first to the primary virtual disks and then to the secondary virtual disks A Remote Replication group defines
the synchronization settings for all replicated pairs within the group. Each replicated pair in a Remote Replication group
shares the same synchronization settings, primary and secondary role, and write mode. You can synchronize all
replicated pairs in the Remote Replication group at the same time.
A Remote Replication group is associated with the local storage array and remote storage array in the replicated pair:
• The local storage array performs the primary role in the Remote Replication group. All virtual disks added to the
Remote Replication group on the local storage array perform the primary role in the replication relationship.
• The remote storage array performs the secondary role in the Remote Replication group. All virtual disks added
to the Remote Replication group on the remote storage array perform the secondary role in the mirror
relationship.
Creating Standard Remote Replication Groups
The first step is to create an empty Remote Replication group first, then add replicated virtual disk pairs. Only replicated
pairs can be added to a Remote Replication group; replicated pairs can be a member of only one Remote Replication
group. A storage array can have no more than four Remote Replication groups.
NOTE: To configure Remote Replication within the MD vCenter Plug-in, both arrays (local and remote) must be
added to/managed by the plug-in. If either array is removed from the plug-in, any replication relationships
configured between the two arrays will not appear in the plug-in.
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