Have a war story about a CUCM virtualization requirement you missed? Share it in the comments below. This post reflects best practices based on CUCM 12.x/14.x. Always check the latest Cisco documentation before deployment.

If you’ve ever deployed Cisco Unified Communications Manager (CUCM) in production, you already know: this is not a “throw it on any VMware cluster” situation.

Cisco maintains one of the most strict—and arguably most misunderstood—virtualization requirement documents in the industry. Ignoring it almost guarantees TAC will hang up on you (politely, but firmly).