We got this supermicro server comes with Intel RAID Controller (iCH9 etc). I have enabled the RAID in BIOS and created a RAID 1 with 2 member disks (1TB SATA).
The installation went fine but the command: df -h and fdisk -l looks strange to me. How come the Centos still sees 2 disks (sda sdb). Just wondering do I have RAID1 running or not, if one disk failed, can I just plug a new one in and no down time for the server? Thanks.
Output:
[root@w11 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
854G 1.5G 809G 1% /
/dev/mapper/ddf1_4c53492020202020100000601000101347114711a3c8ce6cp1
99M 20M 75M 21% /boot
tmpfs 24G 0 24G 0% /dev/shm
[root@w11 ~]# fdisk -l
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 121454 975474832+ 8e Linux LVM
Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 13 104391 83 Linux
/dev/sdb2 14 121454 975474832+ 8e Linux LVM