Whether you’re deploying on Cisco’s UC on UCS hardware, third-party servers, or virtual machines, getting the specs wrong leads to choppy audio, failed failovers, and support headaches.
Here’s a helpful blog post tailored for IT professionals and voice engineers planning a Cisco Unified Communications Manager (CUCM) deployment. When planning a Cisco Unified Communications Manager (CUCM) deployment, it’s easy to focus on features—call routing, SIP trunks, mobility, and integration. But the foundation of a successful deployment starts long before you configure your first phone. It starts with understanding CUCM’s real hardware requirements . cucm hardware requirements
Start with the right OVA. Overprovision disk slightly. Reserve memory. Use fast storage. And for the love of dial tone, stay on the HCL. Whether you’re deploying on Cisco’s UC on UCS
| Deployment Size | vCPU | RAM (GB) | Disk (GB) | Max Devices | |----------------|------|----------|-----------|--------------| | 1000 users | 2 | 8 | 110 | 1,000 | | 2500 users | 4 | 8 | 110 | 2,500 | | 7500 users | 6 | 12 | 110 | 7,500 | | 10k+ users | 8 | 16+ | 110+ | 10,000+ | But the foundation of a successful deployment starts