Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have an HP Proliant ML110 G5 with RAID1 mirror. One disk is dead and I took a new disk (same size, rpm and model) and put on the bay, BUT the system doesn't see it... I believed that I had only to put the disk in .... where il the problem ... Should I format the disk before the rebuilding?...

Help! thanks to everyone who could give me some idea to solve... (sorry for my poor english... :)


share|improve this question

You could either have a bad second disk, or something other than the disk could be bad: the backplane, the cable between the backplane and the controller, or the controller.

share|improve this answer

Try rebooting and pressing F1 at the 1786 Recovery Needed message.

Allow time for the rebuild to complete before booting the OS.

See RAID 1(+0): breaking mirrors and rebuilding drives

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.