Asus PIKE 1078 - Manual (Page 31)

ASUS PIKE 1078 2-17
8. Check the information in the configuration preview.
9. If the virtual disk configuration is acceptable, click Accept to save the
configuration. Otherwise, click Cancel to end the operation and return to the
WebBIOS main menu, or click Back to return to the previous screens and
change the configuration.
10. If you accept the configuration, click Yes at the prompt to save the
configuration.
The WebBIOS main menu appears.
Using Custom Configuration: RAID 6
RAID 6 is similar to RAID 5 (disk striping and distributed parity), except that instead
of one parity block per stripe, there are two. With two independent parity blocks,
RAID 6 can survive the loss of two disks in a virtual disk without losing data. Use
RAID 6 for data that requires a very high level of protection from loss.
RAID 6 is best suited for networks that perform a lot of small input/output (I/O)
transactions simultaneously. It provides data redundancy, high read rates, and
good performance in most environments.
In the case of a failure of one drive or two drives in a virtual disk, the RAID
controller uses the parity blocks to recreate all the missing information. If two
drives in a RAID 6 virtual disk fail, two drive rebuilds are required, one for each
drive. These rebuilds do not occur at the same time. The controller rebuilds one
failed drive, and then the other failed drive.
When you select Custom Configuration and click Next, the Disk Group Definition
screen appears. You use this screen to select physical drives to create disk groups
(arrays).
1. Hold <Ctrl> while selecting at least three ready physical drives in the Physical
Drives window on the left.