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Saturday, July 24, 2010

ASA 5520 Active/Standby Memory Upgrade 8.2 to 8.3

We're about to undertake the 8.2 to 8.3 upgrade. We understand that fail over config will not work if the pair has different memory. What is the plan on inserting the new memory,can we do it to minimize the downtime?


Yes we can upgrade from 8.2 to 8.3 with zero downtime while performing the memory upgrade. We support this and we test for it.

Just install the image on one unit and set the boot variable, and then power it off. Install the memory on it, and then power it back on. It will boot up and convert the config and then do the failover config sync. Once complete, this unit will be running 8.3 as a standby. Next, make it Active and then perform the same functions on the peer.

Note that we do support mis-matched memory for short durations during the upgrade process so that you can perform zero downtime upgrades.

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