I strongly recommend to reserve at least 1 disk for hotspare. If storage amount is not the problem, I will use 2 disks for hotspare and leave 20 disks for RAID10. 5*1G LUNs for ocr & voting. -- Kamus <kamusis@xxxxxxxxx> Visit my blog for more : http://www.dbform.com Join ACOUG: http://www.acoug.org On Wed, Apr 20, 2011 at 10:40 AM, Steven Andrew <postora@xxxxxxxxx> wrote: > Hello Everyone, > We are building up a system from scratch and wanted to follow the best > practices in setting up SAN Storage Array for ASM. With 22 disks in the > array for use, i was planning on doing 11 + 11 in Raid 1/0 setup with > maximum stripe possible within the array and carve out 3 x 2G LUNs for > vote_ocr and 2 x 1TB LUNs for both DATA and FRA diskgroup. vote-ocr DGs > will use normal redundancy and database in external redundancy. This will be > on 11gR2 + Linux 5.5 + 4 node RAC cluster to house a mixed (70% oltp + 30% > DDS) workload application. Wondering if anyone have an opinion or best > practices generally implemented for these setups. > Thanks > Steven Andrew -- //www.freelists.org/webpage/oracle-l