RAID 10
| RAID 10 is a combination of RAID 0 and RAID 1. RAID 10 has mirrored drives. RAID |
| 10 breaks up data into smaller blocks, and 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 to four drive failures while maintaining data integrity |
| if each failed disk is in a different RAID 1 array. |
Uses | RAID 10 works best for data storage that must have 100% |
| redundancy of mirrored arrays and that also needs the |
| enhanced I/O performance of RAID 0 (striped arrays). |
| RAID 10 works well for |
| environment that requires a higher degree of fault tolerance |
| and moderate to medium capacity. |
Strong Points | RAID 10 provides both high data transfer rates and |
| complete data redundancy. |
Weak Points | RAID 10 requires twice as many drives as all other RAID |
| levels except RAID 1. |
Drives | Four to 14 (must be a multiple of two) |
24MegaRAID Express 500 Hardware Guide