After two days of prep and an awful lot of testing on a local copy to try and remove as many of the bugs as possible, ned Productions Limited hosted websites are finally migrated to Plone v4.0.5!

This is a big upgrade - there are a whole load of new features across all our hosted sites, especially in commenting and database features never mind a very significant performance increase and reduction in server load. Given the size and complexity of the upgrade, I had been putting it off for more than six months now, but as we're about to start a new large R&D project we needed a fully capable and up to date CMS to back its public facing website so the upgrade definitely needing doing. Now it's done, I am glad as I can move ahead with the R&D.

Unfortunately one of our sites didn't make it - neocapitalism.org which was felled by the lack of a working ZWiki. The old ZWiki, v0.61, won't work with Zope 2.12 while the new ZWiki, v2.0, won't work with Plone 4. However, the site's content has been saved off and when ZWiki gets itself sorted out we will complete the port to Plone 4. Other that that, all our sites migrated fairly well though some took a lot of work indeed :(

Total downtime was about twelve hours, though varnish continued to serve up read-only versions of our sites during that time. Thanks for the patience!