Due to hard read failures we had to replace two drives in the array.
Swapped out the first drive, let the array rebuild and everything was
still OK. Swapped out the second drive and the first LUN (on another
server) is OK but the second LUN was changed to a traditional partition
with no volumes.

System is a DL380G3 running off an MS1000. NW65SP3 with NSS 3.22.

Any ideas what happened? We do have good backups (did a data copy to
another server and are running off that server at the moment) so we can
delete the partition and recreate it, but would like to know what
happened as we have two more drives in another array that are having
problems (and HP wants to swap those drives out).