Summary of RAID Methods
| RAID 0 | RAID 1 | RAID1+0 | RAID 5 | RAID ADG | |
|---|---|---|---|---|---|
| Alternative name | Striping (no fault tolerance) | Mirroring | Mirroring and Striping | Distributed Data Guarding | Advanced Data Guarding |
| Usable disk space* | 100% | 50% | 50% | 67% to 96% | 50% to 93% |
| Usable disk space formula | n | n/2 | n/2 | (n-1)/n | (n-2)/n |
| Minimum number of physical disks | 1 | 2 | 4 | 3 | 4 Continue reading “เปรียบเทียบ RAID” |