Prepare separate diskgroups for data, control file, redo log files, etc.
Plan to install Oracle 11g R2 on Linux. At current stage, I'll prepare one diskgroup containing two disks (will use external mirror) for ASM so that all the data, control file, redo log files, and archive logs will all be in the hand of ASM.
When I prepare the disks for the ASM (using asmca), I can specify the diskgroup name as DATA for the regular files and present two disks (/dev/sda1 and /dev/sdb1). (Let's leave out the FRA for now).
In the long run, I may put each of the said files on separate disks. For instance, I intend to use:
/dev/sda1 and /dev/sdb1 for data,
/dev/sdc1 and /dev/sdd1 for redo logs
/dev/sde1 and /dev/sdf1 for control files
/dev/sdg1 and /dev/sdh1 for archives
The reason I prepare two disks for each group is to take the advantage of the ASM's striping capability.
Then, how can I specify the diskgroup names for each of them (using asmca) so that the ASM will know where each type of file is to be placed to?
Thanks
Scott