08-17-2010 12:52 AM
I would like to know, can it be done undistruptive upgrade ?
where can I get the procedure/manual for non distruptive upgrade ?
Appreciate your reply.
08-17-2010 04:07 AM
The code upgrade can be non disruptive for
1. Director class switches, since the failover time is approx 2 ms as opposed to 40-60 ms for pizza box switches. I normally do a controlled upgrade to ensure that all events happen as planned. The default method is to just run the firmwaredownload command which works for many a customer as well.
2. For resilient and redundant SAN's with properly configured multipath software.
08-18-2010 08:52 AM
The attached doc may help you. Also before upgrading the FOS, pls check the compatibility of HBA firmware and Microcode of storage sas well as multipathing SW . In extreme cases , some AIX machines behaves differently after doing FOS upgrade. First upgarde one Fabric and wait for 1 week and then upgarde the other fabric. You can try it in ur UAT set up, if you have then in production.