PowerEdge R220 II - Max hard disk size?

Hi,

I'm looking to get a couple more years out of the R220 II we have.  Hard disk technology has moved on since 2014 and thus I was wondering how big a hard disk I can install into the server.  The documentation says 6Tb but I suspect that was when 3Tb disks were still new.  Ideally I'd like to install a couple of 6Tb 3.5" SATA drives.

Thoughts?

Thanks
Rob