PowerVault MD3860i DDP Capacity issue

Hi,

I have PowerVault MD3860i Array  with 36 X 4TB 7,2K drives (Total Capacity: 105.327TB). I have configured the disk pool using DDP Automatic configuration. Disk pool status shows Usable capacity 94.433TB and Preservation Capacity 10.894 TB (3 Physical Drives.)

when i try to create Virtual Disk, Usable capacity shows 64.00 TB and i can only create upto 64TB, dues to this I am loosing Half of My storage capacity,

Any help appreciated,  Thanks