When to install Raid card

[jdvilla]

Looking for confirmation

From my understanding raid (in this case Raid 1) is configured prior to installation (in this case Fedora Core 1)

Well, I'm being told that it can be done after installation but from what I've been taught, it has to be done, well as I said above, before installation.

I already have FC1 installed and need to add an adaptec ATA Raid 1200A card. I've been googling for known issues and it looks like there are alot.
Any pointers?

[XiaoKJ]

If you can be sure that both your hard discs have the _SAME_ geometry -- same size, same number of heads...

If they are even the same model, then you are in luck --

From what I know, just do a disk dump from the existing disc to the one you just bought.(with a live-cd)dd if=/dev/hda of=/dev/hdband shutdown, then install the card as normal.

*WARNING* this is a unorthdox method that I have NEVER TRIED and I will not hold for any losses. Also be sure you have the RAID driver compiled in the kernel or something. If the hard discs are not the same I cannot help you....:(

EDIT: Why not google (http://www.google.com) for answers? (http://www.google.com/search?q=raid+1&sourceid=mozilla-search&start=0&start=0&ie=utf-8&oe=utf-8)