Managing mirrored drives and striped sets is somewhat different from managing other drive volumes, especially when it comes to recovering from failure. The techniques you’ll need to manage RAID arrays and to recover from failure are covered in this section.
You might want to break a mirror for two reasons:
If one of the mirrored drives in a set fails, disk operations can continue. When users read and write data, these operations use the remaining disk. Still, at some point you’ll need to fix the mirror, and to do this you must first break the mirror and then reestablish it.
If you no longer want to mirror your drives, you might also want to break a mirror. This allows you to use the ...