and that Windows cant see a LUN larger than 2TB. Depending on the SAN, you could create a large RAID-5 array and then split that into 2x 2TB LUNs and a 1TB LUN. Format with VMFS ensuring you select the correct block size to enable VMFS of this size, then add a single VMDK on each LUN to use as your data volumes. Leave around 20% space though for VMware overhead