In an existing environment there are seven farms where one is a shared services farm for search, managed metadata and user profiles. The reason for six different SharePoint 2010 farms is organizational and political, which is not a scope in this question. These different farms are small, containing one or two web applications with a total storage of less than 200 GB per web application/site collection. There is one web application with one site collection of 350 GB and the total amount of storage is 2.2 TB.
We’re considering to consolidate all these different farms into one single farm to use only half of the Web Front End Servers and Application Servers and use an existing SQL Server Cluster environment which three of the farms already use. There will also be a substantial reduction of SharePoint Server licenses if we perform this task as planned.
All web applications/site collections have custom solutions and individual settings, but there are no third party solutions anywhere. There is, however, a Content Type Hub in one of the farms.
Would you recommend that we continue with this plan, or what would you say could stop us in our plans?