NEC Storage M100 Series - Table A-2: Specifications - RAID Configurations

Release 6.0 306
User Guide Appendix A Specifications
Specifications of the RAID configurations are shown below.
Table A-2: Specifications - RAID Configurations
RAID type RAID components Number of disk drives Storage efficiency
RAID-10 (1D+1D)× n 2 or more 50%
RAID-50 (2D+P)× n 3 or more 66%
(4D+P)× n 5 or more 80%
(8D+P)× n 9 or more 88%
RAID-60 (4D+PQ)× n 6 or more 66%
(8D+PQ)× n 10 or more 80%
RAID-TM 1D+1D+1D 3 33%
 It is recommended that you use disk drives of the same capacity and rotational frequency for
RAID systems.
 D refers to data disk; P and Q refer to parity disks.
 n is an integer greater than 1.