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 medium-sized databases or any

 

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 32 (must be a multiple of two)

22MegaRAID Enterprise 1600 Hardware Guide