Cisco organizes hardware requirements into "OVF Templates." These templates define the virtual hardware (vCPU, RAM, and Disk) based on the number of users or devices you need to support. 1. Small Deployment (Up to 1,000 Users) 2 RAM: 6 GB Disk Space: 1 x 80 GB Common Use Case: Branch offices or small businesses. 2. Medium Deployment (Up to 2,500 Users) vCPU: 1 RAM: 6 GB Disk Space: 1 x 80 GB
You can use third-party servers (HP, Dell, IBM) or other Cisco UCS models if they meet these criteria: cucm hardware requirements