Asus PCI-DA2100 User Manual - Page 402
Raid 1
View all Asus PCI-DA2100 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 402 highlights
ASUS GUI RAID Manager: RAID Levels multiple disks. Furthermore, for I/Os that do not span more than one drive, read/writes to different drives can be processed concurrently. Logical Drive Block 1 Block 2 Block 3 Block 4 Block 5 Block 6 Block 7 Block 8 . . Physical Disks Striping Block 1 Block 3 Block 5 Block 7 . . Block 2 Block 4 Block 6 Block 8 . . RAID 1 RAID 1 implements disk mirroring where a copy of the same data is recorded onto two sets of striped drives. By keeping two copies of data on separate disks or arrays, data is protected against a disk failure. If, at any time, a disk on either side fails, the good disks can provide all of the data needed, thus preventing downtime. In disk mirroring, the total disk capacity is equivalent to half the sum of the capacities of all SCSI drives in the combination. Thus, combining four 1GB SCSI drives, for example, would create a single logical drive with a total disk capacity of 2GB. This combination of drives appears to the system as a single logical drive. RAID 1 is simple and easy to implement; however, it is more expensive as it doubles investment required for a non-redundant disk array implementation. RAID 1 C-3