Toshiba Magnia 560S - Manual (Page 46)

RAID Levels 28
RAID Levels
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 14.