Thinking in terms of the future, let's say I buy 4 external disks, set them up with Ubuntu Server 12.04 software RAID 1+0. Then later after some usage I want to stick them on a new computer - how do I ensure they work immediately?
If I just plug them into the fresh computer (with any other hard disks removed), will they automatically know how to relate to each other REGARDLESS of which order of external slots I plug them into? Or do I have to be careful to plug them in a certain port order?
If neither of these are guaranteed to work, then what steps must I take to ensure I get the Ubuntu booting up and running with the software RAID 1+0 exactly as before, bearing in mind I'm relatively new to Ubuntu Server?
And does it matter if I use any combination of external ports for the drives (e.g. USB 2.0, 3.0, eSATA 2.0, 3.0, any future versions of USB, eSATA etc.)?