Live multisite upgrade process: Advice needed
I need your experience and tips about upgrading a live multisite installation (14.000 blogs) and Buddypress from 3.0.5 to 3.3.
Is it possible to upgrade our live site without having a downtime?
Of course we will do the upgrade first into a developmemt server but how should we approche the live site?
1) Should we juct copy the final development version (including new plugins versions and Buddypress version) into our live servers?
2) Should we “shut down” the live site in order to unistall Buddypress, plugins etc and then make a same manual upgrade keeping the site down for hours?
And what about the “Update Network” button after the upgrade? In last upgrade this process took about 8 hours for all our blogs. Is it safe to enable access to our site, while the updating network is still running?
Can we activate the plugins before the update network is complete?
Thanks a ton!!! in advance.
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