Sounds like a plan.   You can consider to use the 2nd. one as a Hotspare configurated within the system or just hold as a cold standby replacement part under the desk.  If you have a monitoring and will take notice a drive failure i would prefer the cold standby.... but if the server running somewhere in a dark and empty room i would prefer the Hotspare. Regards,Joerg
I just bought R620 (used); want to use it for Labs preparation (Networking labs). There are 10 146GB; DELL Seagate Savvio SAS discs. One of those has amber LED blinking, means it's failed, needs to be replaced. Question is related to the options; I would like to remove that one and one another; so there would be 8 discs inside. Then I would reconfigure RAID to RAID 6; using 8 SAS discs (1, which failed, not to be used and the 2, good one, to be used as replacement if any other disc would fail). At the moment, not planning to buy another disc for replacement. Any suggestion, if this would be good to do or, something else to be done? Thanks.  
R620; One SAS disc failed