Which version of Windows Server should I install my Retain Server on?
There are memory limitations on certain types of Windows Servers which cap memory to 32 GB. 32 GB of RAM should be sufficient memory for most setups when your SQL database has a dedicated server. However, when your SQL database is installed on the Retain server, or you are archiving 1000+ users, you may want to exceed 32 GB of RAM on your Retain Server.
Link to Microsoft article which explains memory limitations.
If using Windows Server 2008 R2 be aware of this issue and the workaround: The Retain Server Runs Out of Memory
This article was originally published in the GWAVA knowledgebase as article ID 2449.