First, if mounted:

esxcfg-datastore -u "DatastoreName" Mount:

partedUtil get /dev/disks/naa.YOUR_DISK_ID Or for all:

Recover - Vmfs Datastore Esxi 5

First, if mounted:

esxcfg-datastore -u "DatastoreName" Mount: recover vmfs datastore esxi 5

partedUtil get /dev/disks/naa.YOUR_DISK_ID Or for all: recover vmfs datastore esxi 5