Selecting The Best Raid Level - Adaptec RAID 2405 Installation And User Manual

Selecting the Best RAID Level

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
RAID 0
RAID 1
RAID 1E
RAID 10
RAID 5
RAID 5EE
RAID 50
RAID 6
RAID 60
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.
Disk Drive
Redundancy Usage
No 100%
Yes 50%
Yes 50%
Yes 50%
Yes 67 – 94%
Yes 50 – 88%
Yes 67 – 94%
Yes 50 – 88%
Yes 50 – 88%
Appendix B: Understanding RAID
Read Write
Performance Performance
82
●
Minimum
Built-in Disk
Hot Spare Drives
No 2
No 2
No 3
No 4
No 3
Yes 4
No 6
No 4
No 8