My back-up drive is an GPT, NTFS formatted 3 TB external drive, all one volume.
Win7 Ultimate 64bit mounts it just fine as a 3TB volume.
That's what I thought, but I didn't have a 3TB HDD to prove it on Win 7 64. I'd have to go back and check again, but the skinny at "WeGotServed" and other WHS forums seemed to say that WHS by itself would partition a 3TB GPT drive, but required two logical volumes (2TB + 1TB). Then, loading up the True Image 2014 so I could clone the server system disk shows me an option to allow for "large drives as a single logical volume."
The trouble with transitions -- as with "AF" and "GPT" -- there are "loose ends."
This of course, is a burr in my side for a "server" system. I could even be wrong about this, or there is "more accurate info" available. But for drive-pooling, I'd think one would want single logical volumes. This isn't currently my trouble, since I deemed it more than adequate for both storage capacity and my budget to get 2TB NAS drives and format them as MBR.
If I get anything bigger, I suppose I'll cross that bridge when I get to it. But I'm seriously bent on getting a few more years out of my $50 WHS-2011 license. I suppose that a server RAID configuration wouldn't have the supposed limitation. But I don't "like" RAID much these days: I want "drive-pooling."