HP Workstation xw8000 - Manual (Page 9)

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Introduction
Adaptec RAID controllers support the following types of array:
RAID-0
A RAID-0 is created by striping data across two or more disk
drives. Simple striping like this creates no redundancy to protect
the data, but by sharing the load equally across multiple drives, it
does provide the best read and write performance of any RAID
type.
RAID-1
A RAID-1 must contain only two disk drives. All data stored on the
array is written to both drives. This duplication, or mirroring, of
the data provides redundancy, ensuring that if one drive fails no
data loss will occur.
Data 0
Data 3
Data 6
Data 9
RAID-0
Data 2
Data 5
Data 8
Data 11
Data 1
Data 4
Data 7
Data 10
Drive Drive Drive
Data 0
Data 1
Data 2
Data 3
RAID-1
Data 0
Data 1
Data 2
Data 3
Drive Drive
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