There is no easy way to find out which vmhba device relates to which VMFS datastore, and vice versa.

For example, a performance chart may show a vmhba device under heavy load, but which VMFS datastore does this relate to?

Run the following commands from the service console of an ESX host.

To find the VMFS datastore from the vmhba device e.g. vmhba0:2:5

ls -l /vmfs/volumes | egrep "^l.*$(esxcfg-vmhbadevs -m | grep 0:2:5 | awk '{print $3}')$" | awk '{print $9}'

To find the vmhba device from the VMFS datastore e.g. Production1

esxcfg-vmhbadevs -m | grep $(ls -l /vmfs/volumes | grep -i "Production1" | awk '{print $11}') | awk '{print $1}'