I'm installing a server machine (intended to run Debian GNU/Linux) which, among other things, is to be used for backups of our code. Now, I don't need all of the contents of the HDD to be error-resilient - the server's root filesystem, the daemons' logs, etc - may become corrupt just fine. But if I put them on just one HDD, I lose symmetry, which I am guessing might be detrimental to RAID performance.
I'll also note that this server is not mission-critical, in the sense that it's tolerable-but-annoying if it fails. Only the data integrity is critical.
Anyway, I have 3 HDDs, 1 Terabyte each. I could give more info, but - based on what I described, how would you partition the HDDs? Which RAID level would you choose, and on what disks? Which LVM configuration would you choose?
Edit: It turns out I have a hardware RAID controller. Would this change my preferences?