Friday, August 24, 2012

What RAID levels are most appropriate for what oracle file types

Use RAID 0 arrays only for high traffic data that does not need any redundancy protection for device failures. RAID 0 is the least used RAID format but provides for high speed I/O without the additional redundant disk drives for protection. RAID 1 offers the best performance while providing data protection by mirroring each physical disk drive. Create RAID 1 arrays with the most disk drives possible (30 maximum) to achieve the highest performance.
File Type
RAID Level
Redo logs
RAID 10
Control files
RAID 10
Temp datafiles
RAID 10, RAID 5
Archive logs
RAID 10, RAID 5
Undo/Rollback
RAID 10, RAID 5
Datafiles
RAID 10, RAID 5
Oracle executables
RAID 5
Export files
RAID 10, RAID 5
Backup staging
RAID 10, RAID 5

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