Migrate from Raid 1 to Raid 5 with IX4-300D

I am considering to buy a IX4-300D.
But what I would like to know: I might consider starting up with 2 drives in RAID-1, and later down the road buy a 3rd drive to upgrade my to RAID-5.
Can this be done on the fly, meaning I can just put in the 3rd drive, and I can upgrade to RAID-5 without data loss?
(Yes, I should certainly have a backup before doing that, but I would like to get around to create a new RAID-5 and having to copy back the data from the backup)
And will I be able to upgrade my 3 drive RAID-5 later to 4 drives?
Solved!
Go to Solution.

Have not tried / seen this yet. All lenovo pieces with raid 5 had 4 disks in, although theoretically it would work with 3, see http://en.wikipedia.org/wiki/RAID
If you think that deeply into it you should also spend the 90 Euro for another e.g. 2 TB WD RED
Various PCs / Laptops ( sorry I still really love Dell and Fujitsu ;-))
Supporting Customers ix2s and ix4s -- Love Networking ( not only technically ).
I am not a Lenovo Employee.
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