[EE84M3i]

>AES can only encrypt up to 64TB

I've never heard that before. Are you referring to a specific mode of operation?

[coadytech]

I think alphager is referring to the upper limits of AES before a birthday attack becomes a concern. In GCM mode there's a realistic chance of an IV being reused after around 64GB of data. Other modes have differing limits.

[EE84M3i]

Presumably this depends on the block size? GP did not specify.