ActiveDR with NFS Datastores – Production Failover and Failback (Part 4)

Hello- this is part 4 in the series of blogs on ActiveDR + NFS datastores. In part 3, I covered how to configure vSphere for a test failover and then how to perform a test failover. In this blog I’ll be covering how to perform a failover and failback.

FlashArray Failure – ActiveDR Failover

What happens if an array fails? I’m going to forcefully stop Purity on both controllers of the source FlashArray (flasharray-x50-1) to simulate this situation. In this case, the workflow is the same as during the failover test except disconnecting the networking from the VMs you are about to power on. It is probably not a good idea to disconnect that so in general, you’ll want to leave these VMs as-is for this scenario. The requirements of your environment might require something else here. So you’ll promote the surviving array and power on the VMs based on the last-replicated state of the VMs. 

If this is a test you are doing in a test/proof of concept deployment, to replicate what I’m doing, simply unplug the power cables on the FlashArray. Please do not pull power on your production FlashArrays :-). Here’s a table of articles in this series:

ActiveDR with NFS Datastores TopicSpecific Topics (NFSD = NFS Datastores)
OverviewWhat’s ActiveDR? What are NFSD?
FlashArray ConfigurationFlashArray NFSD and ActiveDR config
vSphere Configuration and Test FailovervSphere configuration for ActiveDR; test failover
Production Failover and FailbackActiveDR failover and failback in vSphere
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