I have just bought the LSI MegaRAID SAS 8204ELP off eBay and have been looking at the specs of it. It says that it has support for >2TB logical drive. Now, forgive me if I'm stupid, but does this mean that any RAID array can be over 2TB or that it supports 2TB and above sized drives.
The logical part would suggest that the drive you end up with can exceed 2TB, rather than supporting the actual use of 2TB drives.
I cannot find any documentation on their site regarding the support of 4KB sectors or >2TB drives, the date of the latest BIOS on their site could mean they do support the technologies, but there's no way to really tell without raising the question to their support people.
Some light reading on 4KB sectors that may affect the drives you buy:
The key thing you need to know as a user is: