I'm very new to RAID servers, in fact I'm new to any kind of server management, so please forgive me if this question is badly phrased.
I'm considering buying a RAID5 server with four 4TB drives. I was told by the salesman that while the RAID server would allow for fault tolerance, every time I remove a disk I will have to format it before reinserting it into the server. Is this always the case? Are there models I can buy where this will not be required?