Novell LINUX ENTERPRISE DESKTOP 11 - DEPLOYMENT GUIDE 17-03-2009 Deployment Manual page 180

can fail at the same time. If one hard disk fails, it must be replaced as soon as pos-
sible to avoid the risk of losing data.
Other RAID Levels
Several other RAID levels have been developed (RAIDn, RAID 10, RAID 0+1,
RAID 30, RAID 50, etc.), some of them being proprietary implementations created
by hardware vendors. These levels are not very widespread, so are not explained
here.
12.3.1 Soft RAID Configuration with YaST
The YaST RAID configuration can be reached from the YaST Expert Partitioner, de-
scribed in
enables you to edit and delete existing partitions and create new ones that should be
used with soft RAID. There, create RAID partitions:
1 Select a hard disk from Hard Disks.
2 Change to the Partitions tab.
3 Click Add and enter the desired size of the raid partition on this disk.
4 Use Do not Format the Partition and change the File System ID to 0xFD Linux
5 Repeat this procedure until you defined all the desired physical volumes on the
For RAID 0 and RAID 1, at least two partitions are needed—for RAID 1, usually ex-
actly two and no more. If RAID 5 is used, at least three partitions are required. It is
recommended to take only partitions of the same size. The RAID partitions should be
located on different hard disks to decrease the risk of losing data if one is defective
(RAID 1 and 5) and to optimize the performance of RAID 0. After creating all the
partitions to use with RAID, click RAID > Add RAID to start the RAID configuration.
In the next dialog, choose between RAID levels 0, 1, and 5. Then, select all partitions
with either the "Linux RAID" or "Linux native" type that should be used by the RAID
system. No swap or DOS partitions are shown.
170 Deployment Guide
Section 12.1, "Using the YaST Partitioner"
RAID. Do not mount this partition.
available disks.
(page 155). This partitioning tool