Hi,
Migrating VMs across hosts definitely reduces the downtime, but that doesn’t protect the systems from large scale attacks or disasters.
So a good Backup & DR strategy will rescue your business. If you don't do clustering with some type of shared storage, please try Hyper-V replica which can replicate entire VMs from one host to another in case you unexpectedly lose a host.
Thanks for your time!
Best Regards,
Mico Mi
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