Selecting the best raid level – Adaptec Storage Manager User Manual
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Appendix D: Understanding RAID
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Selecting the Best RAID Level
Use the Table below 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.
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.
RAID level
Redundancy
Disk Drive
Usage
Read
Performance
Write
Performance
Built-in Hot
Spare
Minimum
Disk Drives
RAID 0
No
100%
No
1
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
Spanned Volume
No
100%
No
2
RAID Volume
No
50 – 100%
No
4