MSI X2-109 v1 - Manual (Page 25)

RAID Overview 1-9
Version 2.0 Copyright © 2006 by LSI Logic Corporation. All rights reserved.
1.2.4 RAID 10 Description
RAID 10, a combination of RAID 1 and RAID 0, 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 64 Kbytes. RAID 10 can sustain one drive failure in
each array while maintaining data integrity.
Figure 1.4 shows a RAID 10 array with four disk drives.
Figure 1.4 RAID 10 Array
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 medium-sized databases or any environment that
requires a higher 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 Four, six, or eight
RAID 1
Disk 2 Disk 1 Disk 4 Disk 3
RAID 1
RAID 0
Segment 1
Segment 3
Segment 5 Segment 1
Segment 3
Segment 5 Segment 2
Segment 4
Segment 6 Segment 2
Segment 4
Segment 6 Segment 2
Segment 4
Segment 6