I recommend you read Project Arkham Pt2 - Yes, Virtualisation is still amazing before reading blog post. Automation for Migration One thing that was missed during Part2 was some specific detail on how we performed the migration of VMs. In most cases you could use the UI to perform the migration. That only works during business hours with human interaction. You wouldn't want to do this 3500 times....}
Read Project Arkham, Data centres are like Tribbles for Part 1 of this blog series. There were two major areas to our DC consolidation project which needed to be tackled separately. Firstly, our core business of Zettagrid cloud runs 24x7 and secondly the underlying network with about 2500 last mile services (Fibre, NBN, 4G etc) which connect into Zettagrid could not be interrupted. Starting with...}