Hi all,

I have a problem with configure raid on red hat enterprise linux. The problem is when I create raid on two hard disks. It works successfully but after I remove one hard disk. It works normally. It means that I plug in one hard disk for testing configure raid. But after that I put both hard disks and create other file. The raid is cleared.

My question is:

Why do I turn off server machine, it clears raid that I configure first time before I turn off?

Could anyone help to solve this problem?

Thank, Ung Sopolin