We are in the process of a network redesign and I am now down to changing the IP address of the Equallogic iSCSI SAN that is in use by our VMware ESX servers.
The Equallogic has three active ethernet ports servicing iSCSI requests.
I'm lookingfor a solution that will allow me to renumber the interfaces on the iSCSI SAN, and reconfigure the ESX servers to point to the new addresses, without any downtime.
has anyone preformed this sort of task before? Is what I am asking even possible?
Best Answer
I doubt that this will be possible with Equallogic, at least not without some downtime. The Equallogic architecture will allow you to change the ip-addresses of the interfaces without any downtime (provided the new addresses are visible to the old addresses) but the Group IP-address that is used for management and as the iSCSI target address cannot be changed without some downtime - once you change that you will lose connectivity to the entire set of arrays until you change the target settings on all of your ESX hosts and rescan. I would call Dell and ask them about this but I'd be surprised if it can be done unless they've added something new recently. If you do find out that it can be done, please let us know.