> > What would happen if one of the RAID arrays failed (e.g. two drives die > > in RAID 5 array 1)? Would the data be safe, would I lose all data, or > > would I just lose the data that was on the failed array? > > Two drives in either RAID will most likely kill your LVM. If you need two drive reliability you need RAID6 or depending on the tradeoffs you want to make RAID 5 + hot spare. For performance you want RAID 1 + 0 (possibly + hot spares)
