I want to install 2 1 Tb Samsungs in RAID 0. But I have a small fear that AMC will scan both disks. Recently, when I had the folder Avid Mediafiles on the root of 2 disks, it WAS scanning also the disk that I used for buck-ups. Will it do that also when I have 2 disks mirrored in RAID 0?? With 2 independent disks, I only had to remove the back-up folder from the root level of the back-up disk. I can't do that when disks are in RAID0!

If your RAID array only presents itself to the operating system as a single volume, then Avid will only see a single volume too.  Avid is only interested in the number of volumes that it sees, not the number of disks that make up those volumes.

Butterfly, raid 0 is not mirroring Your drives, it's just striping them together... if You have a backup disk and You want the files on it untouched by Avid just rename the AvidMediaFiles (or the OMFI MediaFiles) folder to something like AvidMediaFiles_projectX; this way You can have individual backups by project too.

I mean ofcourse RAID 1. I want to mirror 2 disks to get rid of fear of loosing my work. I just had a crash. That was enough. So please read my post again and replace RAID 0 by RAID 1. Does AMC see this as 2 disks and will it get confused and scan both Avid Mediafiles folders on both disks?

Is it clever to do this? I do not mind to loose a bit of speed, but if it is comparable with working from an external usb 2.0 external, then it is too slow. Playing back from this external gives (now and then) a stuttering image.

It will be better if you use Firewire or e sata drive. They are faster then USB Drives. I twill be better still if you will use propritory RAID Drive.

A couple of disks in raid 1 is seen by the system as a single disk, in case of failure of one of the disks You can carry on working on the other one replacing the broken disk later on to regain a the raid 1 pair; the thing is going to be slower than a single drive in a non raid configuration, if You want both speed and safety You'll have to look for a raid 5 solution. hth

I didn't correct your use of terminology in my reply to your first post, as it was clear from the context what you were getting at.  I also agree with Luca that RAID 5 would be a better way to go.  It's what I use myself.

RAID 1 will give you similar read speeds to a single equivalent hard drive.  In that respect you do gain security.  It takes a significant hit when it comes to write speeds, and is much slower than a single drive.  This can lead to problems with digitising and longer render times.  I wouldn't use it.