How to check raid configuration in linux server
Run the following command :
cat /proc/mdstat
====================
[root@213 ~]# cat /proc/mdstat
Personalities : [raid1]
md2 : active raid1 sdd3[1] sdc3[0]
1952331776 blocks super 1.2 [2/2] [UU]
bitmap: 0/15 pages [0KB], 65536KB chunk
md0 : active raid1 sdb2[1] sda2[0]
523264 blocks super 1.2 [2/2] [UU]
bitmap: 0/1 pages [0KB], 65536KB chunk
md1 : active raid1 sdb3[1] sda3[0]
123917312 blocks super 1.2 [2/2] [UU]
bitmap: 1/1 pages [4KB], 65536KB chunk
unused devices: <none>
=========================
That's it
