Asus PCI-DA2200 User Manual page 14

RAID (0+1)
Disk Striping with
Mirroring
RAID (0+1)
Minimum
Disks required
Capacity
Redundancy
RAID (0+1) combines RAID 0 and RAID 1 - Mirroring and Striping.
RAID (0+1) allows multiple drive failure because of the full
redundancy of the hard drives. If there are more than two hard
drives assigned to perform RAID 1, RAID (0+1) will be performed
automatically.
IMPORTANT:
"RAID (0+1)" will not appear in the list of RAID levels supported by the
controller. If you wish to perform RAID 1, the controller will determine
whether to perform RAID 1 or RAID (0+1). This will depend on the drive
number that has been selected for the logical drive.
RAID 3
Disk Striping with
Dedicated Parity Disk
RAID 3
Minimum
Disks required
Capacity
Redundancy
RAID 3 performs Block Striping with Dedicated Parity. One drive
member is dedicated to storing the parity data. When a drive
member fails, the controller can recover/regenerate the lost data of
the failed drive from the dedicated parity drive.
3-4
Logical Drive
Block 1
Block 2
Block 3
Block 4
Block 5
Block 6
Block 7
4
Block 8
.
.
N/2
Yes
Logical Drive
Block 1
Block 2
Block 3
Block 4
3
Block 5
Block 6
N-1
Block 7
Yes
Block 8
.
.
Physical Disks
Striping
Block 1
Block 3
Block 5
Block 7
.
.
Mirror 1
Mirror 3
Mirror 5
Mirror 7
Striping
.
.
Physical Disks
Striping
Block 1
Block 3
Block 5
Block 7
.
.
ASUS PCI-DA2200 User's Manual
Block 2
Block 4
Block 6
Block 8
.
.
Mirror 2
Mirror 4
Mirror 6
Mirror 8
.
.
Dedicated
Parity
Block 2 Parity (1,2)
Block 4 Parity (3,4)
Block 6 Parity (5,6)
Block 8 Parity (7,8)
. .
. .