One the drives in a 2-disk software RAID-1 array on a dedicated server running CentOS failed suddenly this weekend and took the entire server down. While I haven't had time to review the logs and monitoring completely there appears to have been no warning (although I was not specifically monitoring raid). Since I'm new to RAID and have a few questions about the failure:
- Should a disk failure in a RAID normally bring down the server? My understanding was that RAID was specifically to prevent this.
- When looking at the logs is there any log or thing in particular I should look for as a cause or precursor?
- How should I monitor my RAID in the future? Is looking at