Dell Perc 6i raid5 array: replace drives and expand VD?

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http://serverfault.com – I have a Dell T300 with a Perc 6i, to which 3 500Gb drives are connected. The are assembled into a raid 5 ~1000Gb VD. This setup is working fine, however system is filling up and I would like to increase capacity. My idea was something along the following lines: Add a new 2Tb drive as a hot spare to the array Remove one of the 500Gb drives, so the 2Tb drive will replace it Once reconstruction is finished, repeat the process until there only are 2Tb drives in the array Expand the array size to fill the 2Tb drives, making the VD about 4Tb. However, looking in the docs, I cannot find any inf (HowTos)