In my QNAP TVS-872XT, I have four 16 TB drives in a RAID 5 configuration. I am going to add two more drives to this and am looking to increase the storage and migrate to RAID 6 too. Is there a preferred/optimal way to do this? e.g. 1) add one drive then migrate to RAID 6, following on from that add the second drive to increase the storage capacity? 2) upgrade the capacity, then the RAID level? 3) Can they both be done at once? I'm not even sure that is possible. I'm thinking that the first option of the RAID migration followed by the expansion might be safest? What do people think? Any comments or suggestions will be gratefully received. Many thanks, Alex.
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