This paper will discuss the top-5 things an operator should know about operating a virtual cable modem termination system (vCMTS). Specifically, five key aspects will be discussed including deployment, scalability, capacity, troubleshooting, multitasking, power, and space needed for operating the vCMTS. The reader will understand that legacy CMTSs and vCMTSs are similar in most cases, especially from an operational and deployment standpoint. This means that if a user is familiar with operating a legacy CMTS then they should be comfortable migrating to a vCMTS. Further, the paper will explore some advantages that may make vCMTSs attractive to cable operators over legacy CMTSs. By the end of the paper the reader should have confidence in understanding that vCMTSs are quite like legacy CMTSs from a features and performance standpoint, while adding other valuable benefits and functionality that the reader may not have considered prior to reading this paper. Sit back and enjoy the read.