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How to identify the VirtuCache adapter (vmhba)?
VirtuCache inserts a pseudo adapter in ESXi which is used to intercept storage IO. Once storage IO is intercepted, then VirtuCache looks up its metadata to see if the requested data (block) is in cache or not. If it’s in cache the data gets served from cache, if not it gets served from backend SAN appliance.
If you would like to know which of the vmhba adapters is the VirtuCache adapter, please run the below ESXi CLI command on the host.
esxcli storage core adapter list
And you will see one vmhba tagged as vnx2 which indicates that it is the VirtuCache pseudo adapter.