Comparing RAID Levels

Use this table to select the RAID levels that are most appropriate for the logical drives on your storage space, based on the number of available disk drives and your requirements for performance and reliability.

RAID Level

Redundancy

Disk Drive

Usage

Read Performance

Write Performance

Built-in Hot Spare

Minimum

Disk Drives

RAID 0

No

100%

***

***

No

2

RAID 1

Yes

50%

**

**

No

2

RAID 1E

Yes

50%

**

**

No

3

RAID 10

Yes

50%

**

**

No

4

RAID 5

Yes

67 – 94%

***

*

No

3

RAID 5EE

Yes

50 – 88%

***

*

Yes

4

RAID 50

Yes

67 – 94%

***

*

No

6

RAID 6

Yes

50 – 88%

**

*

No

4

RAID 60

Yes

50 – 88%

**

*

No

8

Disk drive usage, read performance, and write performance depend on the number of drives in the logical drive. In general, the more drives, the better the performance.

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