Question : Problem: Dell Poweredge 800 RAID Question

Dell PE 800 Server has a drive down in the array (running RAID 0) only two drives.
Ordered 2x72 GB 16k 80 Pin U320 Drives from Dell and should be here within a few days.
The failing drive(s) is 36 GB drive
I want to rebuild the array first with the other 36GB drive populated but then later want to replace the older 36gb with the new 72gb, so I will have a 2xdrive =72gb array running RAID 0.

I know I can just throw in one drive and the aray will rebuild. I also know the RAID card will only use 36gb of the new 72GB drive.
My question is:

After I have rebuilt the array and the replaced 72gb drive is online, I want to throw inthe other 72gb drive, replacing the 36gb (I'm repeating here to be super clear)... once I do this, and the array attempts to rebuild, will it rebuild as 36GB or 72GB? Are there any steps I will have to do or will the array rebuild automatically? (settings are set to "rebuild automatically")

Answer : Problem: Dell Poweredge 800 RAID Question

RAID 0 provides ZERO redundancy, so your wouldn't be in any type of degraded mode. Your data is gone. However, from the sounds of it, I assume you had a tYpO, do you mean RAID 5, or RAID 1

RAID 0, has no parity... it simply lets your stripe one disk to another.
RAID 1, Mirroring
RAID 5, Parity

are you using an "open manager" software utility to do this, or accessing the hardware directly via f8/f6 at boot startup???

J