Remote Replication Concepts
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After the static route has been created, configure the replication target object on the source
appliance using the selected IP address of the target.
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When the target appliance is in the OWNER state, all shared resources including network
interfaces and storage pools are taken over and owned by the one surviving controller, the
controller that is now in the OWNER state. On the controller in the OWNER state, it is
possible to select a network interface that is assigned to one controller and use it to deliver
replication traffic to a pool that is assigned to a different controller. When the controllers are
returned to the CLUSTERED state, the network interfaces and storage pools are returned to
their assigned controllers. Therefore, replication updates might not be possible because the
source appliance will use the network interface on the target controller that no longer owns
the pool. This configuration error cannot arise when replication configuration is performed
while the target appliance is in the CLUSTERED state.
Example: Configuring Replication for Clustered Appliances
The example procedure uses the following source and target network interfaces and IP
addresses:
The source appliance cluster consists of source controllers S1 and S2. Storage pool sp1 is
assigned to S1 and pool sp2 is assigned to S2. The cluster network interfaces consist of:
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Private interface ixgbe0 on S1 with IP address 198.51.100.81/24
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Private interface ixgbe0 on S2 with IP address 198.51.100.82/24
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Singleton interface ixgbe1 with IP address 192.0.2.101/25 assigned to S1
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Singleton interface ixgbe2 with IP address 192.0.2.102/25 assigned to S2
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Singleton interface ixgbe3 with IP address 192.0.2.201/25 assigned to S1
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Singleton interface ixgbe4 with IP address 192.0.2.202/25 assigned to S2
The appliance is Initially in the CLUSTERED state where:
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S1 owns sp1, ixgbe1, and ixgbe3
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S2 owns sp2, ixgbe2 and ixgbe4
The target appliance cluster consists of controllers T1 and T2. Storage pool tp1 is assigned to T1
and pool tp2 is assigned to T2. The cluster network interfaces consist of:
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Private interface ixgbe0 on T1 with IP address 198.51.100.83/24
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Private interface ixgbe0 on T2 with IP address 198.51.100.84/24
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Singleton interface ixgbe1 with IP address 192.0.2.103/25 assigned to T1
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Singleton interface ixgbe2 with IP address 192.0.2.104/25 assigned to T2
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Singleton interface ixgbe3 with IP address 192.0.2.203/25 assigned to T1
536 Oracle ZFS Storage Appliance Administration Guide, Release OS8.6.x • September 2016
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