08-02-2016 06:20 PM
We are planning to chage switch domain ID and also plnning for zone, as currently switch is in default zone. Server OS version RHEL 6.2 and EMC powerpath is installed. In existing configuration every server getting 4 active path.
does any impact on server side(device/LUN) if I change domain ID and zoning.
Environment: 2 SAN Switch, 14 Server are in clustered, EMC VNX5100, OS RHEL 6.2, EMC Powerpath, Vxvm & VCS
08-02-2016 10:55 PM
08-24-2016 07:05 AM
changing the Domain ID of a switch requires you to disable the switch first which of course is disruptive to all attached devices. Assuming you have dual fabric with working multipathing you should only loose some paths temporarily.
Activating a prepared new zoneset is non-disruptive.
08-31-2016 12:42 AM
It depends on your environment. changing domain IDs will change the FC IDs (PIDs) of the connected devices as the domain is a part of that. You need to ensure if all your devices and operating systems can easily cope with that (AIX for example needs dynamic tracking to be enabled... a mainframe would need the path configuration to be updated). And of course your multipathing drivers need to have all paths online before the change so that they can actually utilize the redundancy.