Wandering rather far offtopic …
You can even do LVM on RAID if you want… My linux box has software RAID 1 (mirroring) w/ some LVs on it. Since the disks aren’t equal sizes, the other bit on the larger drive is another LV, along with another disc that is for space hungry stuff that doesn’t need to be mirrored.
LVM is very handy for managing you disk space.
Note that the cheap ATA ‘hardware’ RAID cards don’t really do much in hardware. Their main advantage is that they give you a BIOS which can understand booting from the RAID volume, and some extra ATA ports. Also, if you really want reliabilty and peformance with ATA RAID, you should only have one ATA device per channel.


If you are upgrading YOU DO SOME RESEARCH!