Boot from SAN Reinstall Error vSphere ESXi 5.1

Hi Guys,

I have attempted to reinstall ESXi in boot from SAN but it fails with error " Expecting 2 bootbanks, found 0 "

Boot from SAN has been configured on other blade servers in same chassis but this one crashed and I am reinstalling it and getting these error. Configuration is standard with 2 HBA cards on the blade & storage is detected on both the Cards

Hope someone can help!

Thanks,

VK