K8M800-754
19
Appendix II: SATA RAID 0/1
Specification
I
ges multiple disk drives,
redundant disk storage technology. With RAID striping,
sk that mirrors the main disk. Data that is written to the
ntroduction to RAID
(Redundant Array of Independent Disks)
RAID technology is a sophisticated disk management system that mana
enhancing I/O performance and providing redundancy in order to prevent the loss of data in case any
of the individual disks fail. The SATA RAID facility on this board provides RAID 0 (striped) and
RAID 1 (mirrored).
Disk Striping (RAID 0)
Striping is a performance-oriented, non-
multiple disks are used to form a larger virtual disk. Data is then striped or mapped across all the
physical disks. In this way modern SATA and ATA bus mastering technology can be used to perform
multiple I/O operations in parallel, enhancing performance. While Striping is discussed as a RAID
Set type, it actually does not provide fault tolerance.
Disk Mirroring (RAID 1)
With Disk Mirroring there is a redundant di
main disk is also written to the redundant disk. This redundancy provides fault tolerant protection
from a single disk failure. If a read/write failure occurs on one drive, the system can still read and
write data using the other drive.
