2.3RAID 10
RAID 10 is a combination of RAID 1 and RAID 0. RAID 10 has mirrored drives. It breaks up data into smaller blocks, then stripes the blocks of data to each RAID 1 RAID set. Each RAID 1 RAID set then duplicates its data to its other drive. The size of each block is determined by the stripe size parameter, which is set during the creation of the RAID set. RAID 10 can sustain one drive failure in each array while maintaining data integrity.
Uses | Works best for data storage that must have 100% redundancy of |
| RAID 1 (mirrored arrays) and that also needs the enhanced I/O |
| performance of RAID 0 (striped arrays). RAID 10 works well for |
| |
| degree of fault tolerance and moderate to medium capacity. |
Strong Points | Provides both high data transfer rates and complete data |
| redundancy. |
Weak Points | Requires twice as many drives.. |
Drives | 4 |
Figure 2.3 shows a RAID 10 array with four disk drives.
Figure 2.3 RAID 10 Array
RAID 1
Disk 1 | Disk 2 |
RAID 1
Disk 3 | Disk 4 |
Segment 1 | Segment 1 |
| Segment 2 | Segment 2 |
| ||||
Segment 3 | Segment 3 |
| Segment 4 | Segment 4 |
| ||||
| ||||
Segment 5 | Segment 5 |
| Segment 6 | Segment 6 |
|
RAID 0
RAID 10 |
