FCP nodenames change if you use a add-on fiber channel card as opposed to using onboard ports for target mode.  At least that was our experience during the head swap (3020 to 6030). It can be changed back, but the process is a little more involved.   If you only use onboard ports then the FCP nodename stays the same.

Suresh

From: Romeo Theriault [mailto:romeotheriault@gmail.com]
Sent: Tuesday, February 24, 2009 10:24 AM
To: toasters@mathworks.com
Subject: Do fcp/iscsi nodenames change on a cluster head upgrade?

Hello All, We are in the process of planning for an upgrade of a FAS3050 cluster in single_image cfmode to a FAS3170 cluster which will also be in single_image cfmode. We have a few questions remaining:

 * Do the iscsi nodenames change with a head upgrade? If yes, will this require us to change the iscsi nodename to the old systems for the iscsi clients to be able to seamlessly reconnect to the SAN after the upgrade?

* Does the FCP nodename change with the head upgrade? If yes, will it require us to change it back to the original systems for seamless reconnecting of clients?

* Do the lun serial's change with a head upgrade and does this affect clients in any way?

Thank you for any insight into this.

--
Romeo Theriault
System Administrator
Information Technology Services