Hi
I have a question on LUN numbering, We have Fibre Attached hosts to an EMC VNX 5500
I am looking at our existing setup and just getting a feel as i need to create some new LUNs shortly and i'm new to Fibre.
On the EMC VNX we have a LUN that has been given the LUN ID of 200, however when i match the UUID to the LUN on the host within the Fibre Card on an ESX host it shows the same LUN as LUN ID 43, i'm guessing this is OK as its been in place for a long time and working.
My question are
Why does the LUN IDs not match the IDs on the storage array
I know there is a 255 LUN ID limit in VMware, if i were to provision a LUN on the VNX side and give it a number higher than 255 would that be OK if VMware is going to give a lower LUN ID anyway.
Many Thanks
Nick