Setting Up RAID Arrays
Setting Up the ftServer System
5-11
When the command completes, the RAID array is up and running. You can use the
mdadm
command to see the status of the new RAID array:
#
mdadm
-Q
--detail /dev/md20
/dev/md20:
Version : 00.90.01
Creation Time : Wed Sep 28 15:20:08 2005
Raid Level : raid1
Array Size : 143371968 (136.73 GiB 146.81 GB)
Device Size : 143371968 (136.73 GiB 146.81 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 20
Persistence : Superblock is persistent
Update Time : Wed Sep 28 15:20:58 2005
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Number Major Minor RaidDevice State
0 8 17 0 active sync /dev/sdb1
1 8 49 1 active sync /dev/sde1
UUID : 866e4ecd:12657190:79293b72:6b774c0d
Events : 0.3
Creating a RAID-0 Array
When the desired file system is larger than a single disk, use RAID-0 to combine
multiple RAID-1 arrays into a single RAID array.
This example assumes that two RAID-1 arrays have been created: md20, consisting
of sdb1 and sde1; and md21, consisting of sdc1 and sdf1 on the sdc/sdf pair of disks.
To create a RAID-0 array
1. Select a pair of RAID-1 arrays.
