Server Hard Drive questions

Would HGST/SUNORACLE 4TB 7.2K 3.5" SAS HUS724040ALS640 *512 FORMAT be ok to use in Dell PowerEdge r720 servers ???

Or should I stay away from the HGST/SUNORACLE ones and stick just to the HGST models ???

I assume these are used drives???

The question is do you have an SAS controller installed in the server? I didn’t see in the data sheet if the SAS versions will operate in SATA mode. My guess is yes, but just a guess.