yes i have read almost every post on readonly file system on internet.

everyone says hardware problem..so Q is still the same
imagine if 1 haddrive will go bad out of 3 in Hardware RAID5. Will EXT3 re-mount me to readonly or it will ignore it as Hardware RAID5 is still up on 2 drives
/etc/fstab
LABEL=/opt /opt ext3 defaults,errors=remount-ro,noatime 1 1
errors=remount-ro is i guess default..even if you dont put it, It means re-mount read only on any ext3 file errors
The whole idea with RAID is to protect against drive failue but if EXT3 mounts me RO then what is this RAID good for.
this is the only problem i am trying to solve with RAID, its more of a linux admin q than zimbra
thanks
Raj