RAID drive swapping questions

I have a SBS 2003, Dell Poweredge 2850 server that has 2 SCSI drives on a perc 4i RAID controller.  I would like to know if anyone has performed the following operation that I am going to describe.
I purchased a 3rd identical drive to use as a backup.  If I went into the Dell array manager software and forced one of the 2 disks in the array to offline and then removed it. Then, installed the new disk in and allowed the system to sync the new drive into the array. If, after installing updates Service packs etc and something went wrong, could I power the system down, install the orignal disk I removed from the original array and boot up from that drive? Am I asking for trouble?  I am a little reluctant to even test it because I am not sure that if I reset the RAID controller to force bootup from the single drive if that will cripple the working pair of drives data?
jeffreychorbaAsked:
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glenn_1984Commented:
In theory it should work....BUT
You are asking for trouble.

Even the raid gurus I speak to say...keep a good tape backup, regardless.
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jeffreychorbaAuthor Commented:
Does the native backup software that comes with SBS 2003 backup everything including DNS, DHCP etc.. so if I had to do a full restore I could have it back exactly the way it was at backup time?
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jeffreychorbaAuthor Commented:
II would also like to know if someone has had the operation I described above involving swapping disks work sucessfully?
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glenn_1984Commented:
Re: backup and restore with Native software in Windows 2003:

http://www.microsoft.com/windowsserver2003/technologies/activedirectory/W2K3ActDirFastRec.mspx

I have not actually done this.
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jeffreychorbaAuthor Commented:
Glenn,

Your link references Server 2003.  Does this apply to SBS 2003?  If I used the SBS 2003 backup wizard and selected ASR wizard and performed the backup which includes a floppy disk, what would I do in the event of a disaster. Do I need to boot the server with the orginal OS CD or would it boot off of the floppy?

Jeff
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