Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

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

In a software raid environment, is HBA failure the same as a hardware RAID controller failure? Do you still have to find the same model HBA to put into a different server in order for the drives to work without re-configuration or restore?

share|improve this question
up vote 2 down vote accepted

Not quite. In software RAID, the "assembly instructions" are kept on the disk devices themselves - the HBA has no function other than to create the path from the kernel to the disk device. You would have to have the same drives to put the array back together, but you wouldn't necessarily have to have the same model HBA.

share|improve this answer
To be more precise: software RAID allows you enormous flexibility moving drives to another server. – Halfgaar Nov 11 '13 at 20:13

No. You can just replace it with any controller that exports the disks as single devices to the system.

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.