Asus PCI-DA2200 User Manual
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ASUS PCI-DA2200 User’s Manual
RAID (0+1)
Disk Striping with
Mirroring
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 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.
Block 1
Block 2
Block 3
Block 4
Block 5
Block 6
Block 7
Block 8
.
.
Block 1
Block 3
Block 5
Block 7
Block 2
Block 4
Block 6
Block 8
Striping
Logical Drive
Physical Disks
.
.
.
.
Mirror 1
Mirror 3
Mirror 5
Mirror 7
Mirror 2
Mirror 4
Mirror 6
Mirror 8
.
.
.
.
Striping
Mirror
Block 1
Block 2
Block 3
Block 4
Block 5
Block 6
Block 7
Block 8
.
.
Logical Drive
Physical Disks
Block 1
Block 3
Block 5
Block 7
Block 2
Block 4
Block 6
Block 8
Striping
Parity (1,2)
Parity (3,4)
Parity (5,6)
Parity (7,8)
Dedicated
Parity
.
.
.
.
.
.
RAID (0+1)
Minimum
Disks required
4
Capacity
N/2
Redundancy
Yes
RAID 3
Minimum
Disks required
3
Capacity
N-1
Redundancy
Yes