RAID and Oracle (Cont.)
RAID 5: Data & Parity Striping
- Data & Parity striped across all disks.
- Inexpensive alternative to RAID 0, and improves read performance.
- Degrades write performance due to parity calculations for each write. DBAs like to request this!!!!
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RAID 0+1 (10): Striped then Mirrored
- Disks that are both striped and mirrored.
- Best of both worlds (reliability and performance).
- Expensive solution, for reasons stated for RAID 0.