Our organisations policy is to apply all CUs so it's not something I can change. We did apply this in our test environment some weeks ago but no one took note of how long the script update state took to clear, at that stage there was no requirement to keep the online applications online. Our business colleagues in the mean time had decided to have a marketing campaign necessitating the apps to remain online.

My understanding was the script upgrade state would be for a few minutes but there are some in our team who are stating it may take hours. As it turns out the business have decided to delay the campaign until after the patching. I'll make a note of the timesit takes to perform the upgrade.

On the same note though I've heard of sites that stagger patching their cluster nodes over days or weeks with no problems. I was wondering how does the system cope if you have to fail back to a earlier patch level?

Many thanks for you comments so far.

Steve