Setting up RAID on an exisiting system?

[FooAtari]

My Linux rig has two HD's one 320Gb which is my system disk, holding the OS, images, documents, music etc

And I have a 500Gb disk holding video files. I need more space for video.

What I wanted to do if possible is add a 750Gb disk and create one, erm, volume (is that the right word here?) with the 500Gb and 750Gb disk giving me 1.2Tb. Is there any way to do this without loosing the data on the 500Gb drives? I was guessing I would need Raid 0 but maybe there is a way to do it without using RAID.

I want to create one volume so that I can keep the files and folders in alphabetical order without having to move the files once one disk becomes full and I need to add more files to it. And so I can view it is as 1 disk.

Hope that makes sense

 

[rpstewart]

The Linux sub-forum is probably the best place to ask this because what you're looking for is pretty much Linux specific.

In generic terms RAID0 is not what you're after, firstly you need a pair of identically sized disks or you'll lose the excess on the larger one (unless you use Intel Matrix RAID but let's not over complicate things). Secondly you can't usually migrate from a single drive to RAID0 (again it can be done in certain, limited, circumstances).

 

[FooAtari]

In generic terms RAID0 is not what you're after, firstly you need a pair of identically sized disks or you'll lose the excess on the larger one

/slaps head

Of course... If no one else has any suggestions I'll post it in the Linux forum tomorrow, unless a mod can move it?