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Replying to:
lukasrueckerl
Enthusiast
Enthusiast

Hi,

TLDR: A live vSAN environment with a total connectivity loss for an extended period of time will almost certainly result in problems. Putting Datastores in Maintenance mode will take it completely out of service and stop all I/O on it.

vSAN handles connectivity loss according to this documentation: Network Connectivity Is Lost in the vSAN Cluster (vmware.com)

You will have all Hosts isolated which will most likely result in I/O errors for the VMs. This will most likely lead to reboots of the VMs and could cause some data inconsistency on the OS level.

The best way to resolve a situation like yours would be to replace the network infrastructure step-by-step in parts, so keeping parts of the connectivity alive. If you have over 800VMs which are of such importance, why is there no network redundancy present in your deployment?

 

Regards,
Lukas

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VCIX-NV + VCIX-DCV 2023
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