Administrator Guide

snapshots like any other snapshots. For more information, see Maintaining replication snapshot history from the Replications
topic.
NOTE: If the peer connection is down and there is no communication between the primary and secondary systems, use the
local-only parameter of the delete replication-set CLI command on both systems to delete the replication set.
For more information, see the Dell EMC PowerVault ME4 Series Storage System CLI Guide.
Delete a replication set
1. In the Replications topic, select the replication set to be deleted in the Replication Sets table.
2. Select Action > Delete Replication Set.
3. Click OK. The replication set is deleted and the Replication Sets table is updated.
Initiating or scheduling a replication from the
Replications topic
After you have created a replication set, you can copy the selected volume or volume group on the primary system to the
secondary system by initiating replication. The first time that you initiate replication, a full copy of the allocated pages for the
volume or volume group is made to the secondary system. Thereafter, the primary system only sends the contents that have
changed since the last replication.
You can manually initiate replication or create a scheduled task to initiate it automatically from both the Replications and
Volumes topics. You can initiate replications only from a replication set's primary system.
NOTE:
If you change the time zone of the secondary system in a replication set whose primary and secondary systems
are in different time zones, you must restart the system to enable management interfaces to show proper time values for
replication operations.
If a replication fails, the system suspends the replication set. The replication operation will attempt to resume if it has been
more than 10 minutes since the replication set was suspended. If the operation has not succeeded after six attempts using the
10-minute interval, it will switch to trying to resume if it has been over an hour and the peer connection is healthy.
NOTE:
Host port evaluation is done at the start or resumption of each replication operation.
● At most, two ports will be used.
● Ports with optimized paths will be used first. Ports with unoptimized paths will be used if no optimized path exists. If
only one port has an optimized path, then only that port will be used.
● The replication will not use another available port until all currently used ports become unavailable.
NOTE: If a single host port loses connectivity, event 112 will be logged. Because a peer connection is likely to be associated
with multiple host ports, the loss of a single host port may degrade performance but usually will not cause the peer
connection to be inaccessible.
Manually initiate replication from the Replications topic
If CHAP is enabled on one system within a peer connection, be sure that CHAP is configured properly on the corresponding peer
system before initiating this operation. For more information about configuring CHAP, see CHAP and replication.
1. In the Replications topic, select a replication set in the Replication Sets table.
2. Select Action > Replicate. The Replicate panel opens.
3. Click OK.
● If a replication is not in progress, the local system begins replicating the contents of the replication set volume to the
remote system and the status of the replication set changes to Running.
● If a replication is already in progress, then the outcome of this replication request depends upon the Queue Policy setting
specified in the Create Replication Set panel. For more information on setting the queue policy, see Queuing replications.
Working in the Replications topic
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