9.5 Recovering from a Disaster
Use snapshots of the nodes to recover from a disaster. It is important to take snapshots of each node in the cluster regularly so you do not lose information.
To recover from a disaster:
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On a regular basis, take snapshots of the nodes in the cluster.
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Power off the working node, then take a snapshot.
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Take a snapshot of the running node including the virtual machine’s memory.
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Repeat Step 1.a for each node in the cluster, within a short time.
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When a failure happens, restore the master node snapshot first.
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Restore the other nodes in the cluster.
Use these steps only for disaster recovery. Never restore one snapshot. Access Gateway for Cloud contains a database that is time-sensitive. Restoring one node only and not the others causes corruption in the appliance.