VMware vSphere Fault Tolerance

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Fault tolerance
VMware Fault Tolerance
VMware vSphere
Would the fault tolerance feature in vSphere work as a disaster recovery solution? Thanks. Moderator Note: This is a submitted question

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I think the answer would be no.

Like HA, FT is designed for the failure of an individual VM running on a ESX host.

VMware HA when enabled protects ALL VMs on the cluster, in contrast VMware FT is enabled per-VM and requires an FT-Logging Network with very low latency (2x1GB pipes are recommended for fault-tolerance and low latency)

Given the requirements of VMotion, HA, and FT – compatible CPU with the “lockstep” attributes, shared networking and shared storage – its extremely challenging to deliver those as a “stretched cluster” solution.

If you looking for a true DR solution for VMware VMs, you should be looking at storage array replication and the Site Recovery Manager product.

Regards
Mike

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