How to check Raid level on CentOS 6.5?

I want to check Raid Level on CentOS 6.5 but I don’t have any command which can help me.
example: Server is running with 5 hard disks. 4 HDD is configured to Raid 1 and 1 HDD configured to Hot Spare, so what command should I used to get information that the information above.

To check raid level, Try following command :

  1. cat /proc/mdstat
  2. dmraid -s
  3. lspci -vv | grep -i raid
  4. mdadm -D /dev/mdxxx

With the help of these command you will get Raid Level in detail information.

Dear rajeshkatha
Thanks for your help.
I have tried your command but it didn’t show the result as I want. The result as below:

  1. [root@master01 ~]# uname -a
    Linux master01 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
  2. [root@master01 ~]# cat /proc/mdstat
    Personalities :
    unused devices:
  3. [root@master01 ~]# dmraid -s
    no raid disks
  4. [root@master01 ~]# lspci -vv | grep -i raid
    1b:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2008 [Falcon] (rev 03)
    Kernel driver in use: megaraid_sas
    Kernel modules: megaraid_sas
    5.[root@master01 ~]# mdadm -D /dev/mdxxx
    mdadm: cannot open /dev/mdxxx: No such file or directory
    You have new mail in /var/spool/mail/root

there 2 type raid in server level configuration,

  1. Hardware RAID which managed under hardware raid manager

  2. Software raid which controlled by Linux/OS

hope in your system you are using hw raid , the commends different for each HW/Server

for dell

omreport storage vdisk controller=0

Thanks n_rajeshnadar for your answer.
May be my server has configure by hardware raid that why I can’t use command to show raid level, unless I go to reboot server and check raid level. but my server is running, can’t reboot. so what command should I use for IBM system.

you can search
No need to reboot the server you can look