Originally Posted By: robricc
2TB...I don't know if this is a limitation of Windows XP, but I would have liked to make a single volume the total size of the array.

The 2TB limit is the next major roadblock in the storage world, and it comes from several different issues. Under Windows, 2TB is the largest partition size allowed on those 1980's MBR formatted disks, with GPT formatted disks being the way to solve the issue. Various filesystems have had limits in the past at 2TB as well, but most have fixed these issues as enterprise storage arrays were hitting 2TB ages ago.

More info for various operating systems here.