I am in the middle of adjusting my Mac and Mac OS Server to a more future proof setting. Having a bit of dilemma here, can't choose between if I should RAID or I should Clone - or if it's even possible to RAID in the way I want to? Look at this: This is the initial plan for my main Mac. It has 2x 240GB SSDs and 1TB external HDD. Thinking of RAID1 the SSDs and use the 1TB as TimeMachine. Benefits will be continues data replicas with better read speeds as a bonus, without the need to schedule a specific time to clone the drives, it just automatically runs in the background. Another way of doing essentially the same is this: I will loose the speed benefits of RAID0, I have to setup a program like CCC to run my cloning on a specific time of day but I will be secured from any RAID corruption as what can occur with software based RAIDs. Almost the same happens with my server that have two 2TB drives (which will be partitioned as 2x1.5) and one 3TB drive. On top of that It runs from a 64GB SSD with a 64GB USB stick and a 500GB external as backup for the OS part. Is it possible to make a combined RAID0 and use that as one half of a RAD1? or For short, what is the best solutions - A1, B1, A2, B2?