User Capacity for Each RAID Level
The user capacity depends on the capacity of drives that configure a RAID group and the RAID level.
Table: Formula for Calculating User Capacity for Each RAID Level shows the formula for calculating the user capacity for each RAID level.
RAID level |
Formula for user capacity calculation |
|---|---|
RAID0 |
Drive capacity × Number of drives |
RAID1 |
Drive capacity × Number of drives ¸ 2 |
RAID1+0 |
Drive capacity × Number of drives ¸ 2 |
RAID5 |
Drive capacity × (Number of drives - 1) |
RAID5+0 |
Drive capacity × (Number of drives - 2) |
RAID6 |
Drive capacity × (Number of drives - 2) |
RAID6-FR |
Drive capacity × (Number of drives - (2 × N) - Number of hot spares) (*1) |
| *1 | : | "N" is the number of RAID6 configuration sets. For example, if a RAID6 group is configured with "(3D+2P)×2+1HS", N is "2". |