diff --git a/docs/source/advanced/networks/infiniband/mlnxofed_ib_install_v2_diskful.rst b/docs/source/advanced/networks/infiniband/mlnxofed_ib_install_v2_diskful.rst
index 1dc68fc0a..6ede855e5 100644
--- a/docs/source/advanced/networks/infiniband/mlnxofed_ib_install_v2_diskful.rst
+++ b/docs/source/advanced/networks/infiniband/mlnxofed_ib_install_v2_diskful.rst
@@ -55,7 +55,11 @@ Configuration for Diskful Installation
 	rsetboot <node> net
 	rpower <node> reset
 
-  After installation, you can login target ndoe and issue ``ibstat`` command to verify if your IB driver works well. if everything is fine, you can get the IB apater information ::
+  **[Note]**: Dpending on Mellanox OFED user manual,  if you don't perform firmware updates to network adapter hardware, no need to reboot the machine, just restart the driver by running ``/etc/init.d/openibd``. But in Rhels7.x, after installation, ``openibd`` restart failed if not reboot the machine. so **we strongly recommend reboot note again to avoid unexpected problem in RHELS7.x.** If you perform firmware updates, whatever operating system you used, **don't forget to reboot machine** . 
+
+  After steps above, you can login target ndoe and find the Mellanox IB drives are located under ``/lib/modules/<kernel_version>/extra/mlnx-ofa_kernel``. 
+
+  Issue ``ibstat`` command you can get the IB apater information ::
 	
     [root@server ~]# ibstat
     CA 'mlx4_0'
@@ -84,4 +88,4 @@ Configuration for Diskful Installation
                 SM lid: 0
                 Capability mask: 0x02594868
                 Port GUID: 0x5cf3fc000004ec04
-                Link layer: InfiniBand
\ No newline at end of file
+                Link layer: InfiniBand