that's what says ESX on ssh comand line about this disk:
# fdisk -l
***
*** The fdisk command is deprecated: fdisk does not handle GPT partitions. Please use partedUtil
***
Disk /dev/disks/naa.600c0ff000138d4a0728eb5e01000000: 1998.3 GB, 1998375747584 bytes
255 heads, 63 sectors/track, 242955 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/disks/naa.600c0ff000138d4a0728eb5e01000000 doesn't contain a valid partition table
Found valid GPT with protective MBR; using GPT