HPE Smart Array P824i-p MR Gen10 User Manual page 10

RAID type
RAID 5
RAID 6
Configuring the RAID usable capacity
If your environment requires a high usable capacity, select a RAID type that is optimized for usable
capacity. The chart in this section demonstrates the relationship between the number of drives in the
array and the percent usable capacity over the capacity for RAID 0.
Consider the following points when selecting the RAID type:
• Usable capacity decreases as fault tolerance improves due to an increase in parity data.
• The usable capacity for RAID 10 remains flat with larger arrays.
• The usable capacity for RAID 5, 50, 6, and 60 increases with larger arrays.
• RAID 50 and RAID 60 assumes two parity groups.
Note the minimum drive requirements for the RAID types, as shown in the table below.
RAID type
RAID 0
RAID 10
RAID 5
RAID 6
RAID 50
RAID 60
10 Features
Disk I/O for every host write
4
6
Minimum number of drives
1
2
3
4
6
8