Simplify the following text for a Grade 8 native English-speaking person.
Original: The methods used to store data by various RAID controllers are not necessarily compatible , so that it may not be possible to read a RAID array on different hardware , with the exception of RAID 1 , which is typically represented as plain identical copies of the original data on each disk .
Simplified: The disk formats on different RAID controllers are not necessarily compatible . It may therefore not be possible to read a RAID on different hardware .