On Jan 18, 2008 6:17 PM, Mike Miller <mbmiller at taxa.epi.umn.edu> wrote: > It seems to > be working -- is there any way to test it? If one of the drives fails, do > we get a warning message? Regarding testing, read the manual. I don't remember the exact tests but I believe you mark individual drives/partitions as failed and blah blah blah... read the manual. (Link to teting section http://tldp.org/HOWTO/Software-RAID-HOWTO-6.html) 'cat /proc/mdstat' will tell you what is currently happening with your arrays. Setup mdadm to warn you in case of a failure via email.