you can't present a LUN bigger than 2TB.
http://www.vmware.com/pdf/vi3_35/esx_3/r35u2/vi3_35_25_u2_config_max.pdf
you can't present a LUN bigger than 2TB.
http://www.vmware.com/pdf/vi3_35/esx_3/r35u2/vi3_35_25_u2_config_max.pdf
Wow, I feel a bit silly that I didn't notice that earlier. Perhaps I should RTFM next time. THANKS!
This is because ESX will only see 2 Tb at a time. You have a 5.4 Tb lun so you will only see the last 1.4 Tb of space. There are many other articles here on the board but this is the short skinny of it.