Chapter 4: Getting Started
●
30
Choosing a RAID Level
This section provides a brief overview of the RAID levels supported by your ICP RAID
controller, including the minimum and maximum number of disk drives required by each.
●
RAID 0 (Non-redundant Array)
—Stripes data across multiple disk drives. Improved
performance but no redundancy (see
page 75
).
●
RAID 1 Array
—Created from two disk drives where one disk drive is a
mirror
of the other
(the same data is stored on each disk drive). Redundancy, but reduced capacity (see
page 76
).
●
RAID 1E Array
—Similar to a RAID 1 array except that data is mirrored
and
striped, and more
disk drives can be included (see
page 76
).
●
RAID 5 Array
—Stripes data for improved performance and uses
parity
data to provide
redundancy (see
page 78
).
●
RAID 5EE Array
—Similar to a RAID 5 array, but includes a distributed spare and must
include a minimum of four disk drives (see
page 79
).
●
RAID 10 Array
—Built from two or more equal-sized RAID 1 arrays, stripes and mirrors
data across multiple disk drives. Redundancy and improved performance (see
page 77
).
●
RAID 50
*
Array
—Built from multiple disk drives configured as two or more RAID 5
arrays, stripes stored data and parity data across all disk drives (see
page 80
).
●
RAID 6 Array
—Similar to a RAID 5 array except that it includes
two
independent sets of
parity data instead of one (see
page 81
).
●
RAID 60
1
Array
—Similar to a RAID 50 array except that it includes
four
independent sets
of parity data instead of two (see
page 81
).
Use the table on
page 82
to see how many disk drives you must connect to your RAID
controller to support the RAID level you want.
*
The ICP9047MA RAID ccontroller does not support RAID 50.