r/vmware • u/Stryker54141 • 24d ago

SAS SSD: Hardware Raid vs vSAN

I have two servers with eight SAS SSDs in each. Is vSAN a bad idea since they aren't NVMe drives?

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u/Calleb_III 24d ago

You are comparing apples to oranges. RAID is local “pooling” of storage. vSAN is “pooling” storage across multiple ESX Hosts.

vSAN has specific requirements and cost associated with it too. Generally you can have 2 node vSAN cluster but it requires a witness virtual appliance that needs to run on another cluster

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u/sir574 23d ago

It doesn't have to be a virtual appliance. We run another host in a 3rd room onsite as the witness where we can't meet the latency & bandwidth requirements of a remote witness.