If the system model is SR1560SF, then the board model should be S5400SF. CentOS 6.5 is not tested or supported on this board, thus no driver is provided. See Hardware, Memory, and Operating System Compatibility.
Yes ESRT2 driver is needed for RWC to work properly.
Now even for the latest generation product, the ESRT2 driver supports RHEL up to 6.4. You may try it for CentOS 6.4. Again it's not validated or supported on this board by Intel.