I run a RAID 1 (mirroring) with 2 disks. Cheap and simple. (And I don’t have to fuck around with RAID card support under Linux.)

I just had 1 disk fail, so I’m about to replace it:

• Cheat sheet on mdadm: http://www.ducea.com/2009/03/08/mdadm-cheat-sheet/
• HOWTO on replacing a failed drive: http://www.howtoforge.com/replacing_hard_disks_in_a_raid1_array

Hold on to your asses everyone. Reminder to self: pull the right disk.

[Edit: Success!]

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