HPFS/NTFS in esx host

Hi to all,

My problem:

I have one cluster with 2 host esx 4.1 they have one datastore of 300 GB.

I increased this datastore with a LUN of 200 GB.

But after this operation, the hosts don t have a total of 500 GB but 370 GB because i found one HPTF/NTFS partition (130 GB) on a last LUN added.

Can i remove this HPFS/NTFS partition, and after increase my VMFS volumes?

Thank to all

Emiliano