Hi Mrinal, sincere apologies this has taken so long, but I hadn't forgotten about you   [IMAGE]  The solution is below. We hadn't seen the issue above before and I don't know if it was something to do with new VMAX engines being put in and new arrays being used... the chassis we were using were also new and in pre-prod  Turns out when the C7000 switch was rebooted all the probes were reset and the WWNS disappear, hence the "seeing" problem. To get us to a state where we could see all the blades in the chassis we:-   Thanks for your feedack, Kenny.   
Hello All,  Maybe someone has some advice ...  I have 8 blades (BL460s) in a HP C7000 Flex-10 chassis, all with their cards in the correct slots but we are having intermittent problems with the Connectrix Manager seeing the blades to allow provisioning. One minute they are seen, next they are not. We've rebooted the machines into various modes, looked at various speeds ... it all appears highly random ...  Does anyone have any ideas on what may be causing this? Cabling may be an issue ...  Many thanks,  Kenny.
Connectrix Manager DC not seeing servers for provisioning