B-1
AMD SATA RAID
AMD SATA RAID
Appendix B
AMD south bridge SB600 integrate SATA host control-
ler that supports four SATAII ports and RAID function
for performance and reliability.
SATA RAID provides support for RAID 0 (Striping), RAID
1 (Mirroring), RAID 0+1 (Striping & Mirroring). RAID 0
greatly improves hard disk I/O performance by
concurrently striping data across multiple drives. RAID
1 makes sure data is not lost if a drive fails as data is
simultaneously written to two drives. Drives configured
for RAID Striping are said to form a RAID 0 set, while
drives configured for RAID Mirroring are said to form a
RAID 1 set. RAID 0+1 is implemented as a mirrored
array whose segments are RAID 0 arrays. RAID 0+1
has same fault tolerance as mirroring and reduces
overhead by striping. It needs at least four drives to
form a RAID 0+1.
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