In vCenter, storage devices or volumes/LUNs present themselves with a unique identifier usually prefixed with eui. or naa.
These are known as Network Address Authority Identifiers and Extended Unique Identifiers. (part of FC and iSCSI naming format standards for LUNs)
However, when looking at them in vSphere and via the esxcli, these unique identifiers are less than useful for identifying which VMFS datastores you are dealing with when looking at paths selection etc.
For that reason, I usually rename each of these via the vSphere client as I add them.
This also benefits when filtering NMP devices from the esxcli
If you have connected to the command line of an ESXi host, you can grep for your renamed display name on a storage device
esxcli storage nmp device list | grep -A 9 VMFSProd