[root@esx421 SAN]# vmkfstools -d thick -a lsilogic -c 10G lun00.vmdk Incorrect disk option "thick" [root@esx421 SAN]# vmkfstools --help vmkfstools: unrecognized option `--help' OPTIONS FOR FILE SYSTEMS: vmkfstools -C --createfs vmfs3 -b --blocksize #[mMkK] -S --setfsname fsName -Z --spanfs span-partition -G --growfs grown-partition deviceName -P --queryfs -h --humanreadable -T --upgradevmfs -x --upgradetype [zeroedthick|eagerzeroedthick|thin] -u --upgradefinish vmfsPath OPTIONS FOR VIRTUAL DISKS: vmkfstools -c --createvirtualdisk #[gGmMkK] -d --diskformat [zeroedthick| thin| eagerzeroedthick] -a --adaptertype [buslogic|lsilogic|ide] -w --writezeros -j --inflatedisk -k --eagerzero -U --deletevirtualdisk -E --renamevirtualdisk srcDisk -i --clonevirtualdisk srcDisk -d --diskformat [zeroedthick| thin| eagerzeroedthick| rdm:|rdmp:| 2gbsparse] -X --extendvirtualdisk #[gGmMkK] [-d --diskformat eagerzeroedthick] -M --migratevirtualdisk -r --createrdm /vmfs/devices/disks/... -q --queryrdm -z --createrdmpassthru /vmfs/devices/disks/... -v --verbose # -g --geometry vmfsPath OPTIONS FOR DEVICES: -L --lock [reserve|release|lunreset|targetreset|busreset] /vmfs/devices/disks/... -B --breaklock /vmfs/devices/disks/... For more information, please run 'man vmkfstools' to refer to the online manual.