On 19/09/2012 12:58, Zabair Ahmed wrote: > So, back to my original question. Do I have a single point of failure? > I have single raw/block device LUN which is configured within ASM as > an ASM diskgroup (ASMSYS) with EXTERNAL REDUNDANCY to hold a single > Voting Disk. At the SAN level I am told by the sysadmin that it's > either RAID 1 or RAID 5. > So it appears that your single voting disk is on a mirrored LUN (RAID 1 or 5), I don't consider this a single point of failure. Regards Dimitre -- //www.freelists.org/webpage/oracle-l