how to check raid on Dell M610 use Linux OS

Ngthcongvn,

Actually with it being a blade, if you go to the CMC and then Server Overview, you can click on the Drac button and be able to see the information from within the Drac page. 

From CentOS you would do the following - 

Note:  If you use yum with CentOS, or Scientific Linux, you must enable plugins in order for the repositories to function correctly. The system connects to a system-specific repository using a yum plugin, which, if not enabled, will not work properly and you will not be able to install packages from the OMSA repository. Add the line, 'plugins=1' to your yum.conf if it is not already there.

1. Set up the Dell OpenManage Repository at http://linux.dell.com/repo/hardware, like this:

   wget -q -O - http://linux.dell.com/repo/hardware/latest/bootstrap.cgi | bash

2. Optional Install OpenManage Server Administrator:

   yum install srvadmin-all
   
   
   Let me know if this helps.