Use the table as a reference for replication direction and default access to volumes according to a subsequent replication consistency group operation and action of the
PowerFlex system.
The replication involves two peers, system A and system B. When the replication is set up, system A is set as source and system B is set as target. The following replication direction refers to the initial direction A to B and to changes to that direction.
Table 1. Replication direction and mapping This table describes the replication direction and mapping according to subsequent replication consistency group operations and possible actions.
Subsequent RCG operations
Possible actions
Replication direction/access
Access to volumes
Normal
Switchover/test failover/failover
Remove
A to B
Access to the volumes is allowed only through the source (system A)
After failover
Reverse/restore
Remove
N/A - data is not replicated
By default access to the volume is allowed through the original target (system B)
It is possible to enable access through the original source (system A)
After failover + reverse
NOTE:Switchover and test failover are only possible after the peers are synchronized.
Switchover/test failover/failover
Remove
B to A
Access to the volumes is allowed only through the original target (system B)
After failover + restore
NOTE:Switchover and test failover are only possible after the peers are synchronized.
Switchover/test failover/failover
Remove
A to B
Access to the volumes is allowed only through the source (system A)
After switchover
Switchover/test failover stop/failover
Remove
B to A
Access to the volumes is allowed only through the original target (system B)
After test failover
Switchover/test failover/failover
Remove
A to B
Access to the volumes is allowed through both systems (system A and system B)
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