If you already have SAS drives, then whatever your configuration, you CAN also use SATA drives.  SAS cables/backplanes will accept SAS or SATA drives - it is part of the spec.  Depending on your controller, you can even use both SAS and SATA, as long as they are not in the same Virtual Disk (array). SAS 5/iR: PERC 5/i:
I have a PowerEdge 840 server with 2 x70gb SAS drives in a mirrored configuration.   This is going in my home Test lab and I'd like to remove the Raid configuration so that I can use both 70gb SAS drives?    Also, very shortly afterward, I would like to change over from SAS to SATA drives when I move the server into my home domain.   So, my first question is:  how do I remove the SAS Array so that I can use both drives?   And, the second question is:  can the PowerEdge 840 be converted from SAS to SATA or can I use both SAS and SATA and thereby increase my drive capacity on the server? Thanks very much in advance    
Test PowerEdge 840 