Summary of RAID Configurations. Shuttle SN27P2, SN27P2 V2

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Summary of RAID Configurations. Shuttle SN27P2, SN27P2 V2 | Manualzz

Summary of RAID Configurations

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Table 1.1 RAID Configuration Summary

Array

Uses

Advantages

Drawbacks

RAID 0

Non-critical data requiring high performance.

High data throughput.

No fault tolerance.

RAID 1 RAID 0+1 JBOD RAID 5

Small databases or any other small capacity environment requiring fault tolerance.

Critical data requiring high performance.

Combining odd size drives into one big drive.

Critical data and reasonable level of performance.

100% data redundancy.

Optimized for both 100% data redundancy and performance.

Allows spare disks.

Combines and uses the capacity of odd size drives.

Fault tolerance and better utilization of disk space.

Requires two drives for the storage space of one drive.

Requires two drives for the storage space of one drive

— the same as RAID level 1.

Decreases performance because of the difficulty in using drives concurrently or to optimize drives for different uses.

Decreased write performance due to parity calculations.

2 4+ multiple 3+ # Hard Disks multiple

Fault

Tolerance

None Yes Yes No Yes

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