Hard drives compatible with C6320

Hi,

How do I tell if a particular model Dell hard drive is compatible with our C6320 servers?

We currently have Dell 400-AMUP 2 TB SATA 6 Gb/s hard drives in several of our servers, and I would like to purchase additional 2 TB drives to fill empty slots. However, these are not always available.

Does Dell have any online tool where one can input the service tag to see what hard drives are compatible? Or is there an online listing on Dell's web site?

Thanks.

Todd