Alexandre Gauthier writes: > I am still curious as to if these manipulations create a software raid > array through OS X, or if that somehow hooks in the hardware and does it > there... It is done in hardware. Now you see 1 single drive instead of 2 drives. The RAID card has the write-through cache and even a keep-alive battery so that the RAM in the cache behaves in a non-volitle manner unless, of course, the battery is allowed to discharge such as if the system were shut down for some extended time period. Martin