If you had 6 1tb drives installed they would most likely be seen in a server type case to start off with. Windows unless configured in sata arrays where file fragments are scattered across a pair of drives would see each one as a separate logical drive and assigned a drive letter.
This would also be seen with one then one partition on any drive. You wouldn't see 6 drives as one with the desktop versions of Windows while servers use the networking types like Winserver 2003, 2005, and now 2008. Those in a sense create virtual drives.