How to identify physical hard disk drives sitting in multiple SAN devices connected to a single ESXi host?

For Q1, you should be able to view the SAN a particular Host is connected to via Host > Configure tab > Storage Devices, then view the paths. There's no way to see individual disks, as Datastores are chunks of storage carved out of multiple disks on an array.

Q2 - your SANs (arrays) monitors disk health status on their own. There are no monitoring tools for this I'm aware of. 

Another question is what is the brand and model of your SAN devices?  If you log in to the management interface UI you should see data there.

Thanks a lot coolsport and Chris for the prompt replies.

Machines like Dell PowerVault (and by association, I believe HPE MSA) you can find the datastore in VMware and associate it to the backing volume on the array, determine what disk pool is backing the volume, and then see which disk group or groups are backing the pool, and then see what disks are assigned to those disk groups. On a PowerStore array, it’s going to be all disks as you don’t have disk groups/pools.  The only exception I think to that one is if you’re using a combination of SCM and SSD, but mine is all SSD so I can’t confirm that.

Another exception would be if you’re using a storage array as JBOD, where you’re mapping individual disks to a host or are using the HBA as a RAID controller rather than using internal RAID controllers on the storage array itself.  However, that’s going to be far less common.

I guess my question is why?  What are you attempting to gain by determining what disk’s are backing what datastores?

Hi @Andrew Manuja  -

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Thank you.