If I currently have a two disk hardware mirror or RAID 1 can I migrate the data from them to a RAID 5 array by adding 4 more drives? Do I need all 6 drives in the array or can I make one of them hot swappable in case something goes wrong? Will it fail over automatically? I am using a Windows Server 2008 and a Perc3 RAID card. I have all 146GB Seagate drives.
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