Hot answers tagged storage
First of you you cannot expand a RAID-1 (Mirror). If you want to make a larger RAID array you will have to back up the drives and recreate the RAID array in a different configuration. Once you have done that you have several configuration options with 4 disks. A quick google of types of RAID will show that... However if it were me I would set up the 4 3TB ...
Only top voted, non community-wiki answers of a minimum length are eligible