esxcfg-rescan vmhbaX # Replace X with your HBA number Or via vim-cmd :
ls /vmfs/devices/disks/ Check if VMFS volume is mounted: recover vmfs datastore esxi 5
esxcfg-datastore -m "/vmfs/devices/disks/naa.YOUR_DISK_ID:1" "DatastoreName" voma is the primary tool for VMFS repair. esxcfg-rescan vmhbaX # Replace X with your HBA