IBM Blade and SAN Firmware Upgrades

I am planning a firmware upgrade on IBM equipement.   There is a SAN, Blade Center and a number of blades.   I believe there is a proper order to do these.  Is it Storage, Blade Center, then blades, or the reverse?
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DavidPresidentCommented:
You need to read release notes on everything.   IBM does an excellent job of telling you what the prerequisites are for everything.   There is no universal correct answer. it depends on the specific makes/models you have and the firmware that it is all running.

In fact, I've seen on rare situations where a firmware release requires full configuration backup and recovery because they are destructive.
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