Cucm Hardware Requirements -

While CPU and RAM dictate performance, storage requirements dictate the stability of the system. CUCM requires specific disk configurations. Historically, hardware RAID controllers were mandatory to create RAID 1 (mirroring) or RAID 5/10 arrays to protect against disk failure. In a virtualized environment, the requirement shifts to the underlying storage array.

To host these virtual machines, you generally choose between two paths: Cisco UCS Tested Reference Configurations (TRC) cucm hardware requirements

If you try to run CUCM on unsupported hardware or a non-VMware hypervisor, TAC will likely refuse to help. Stick to the Hardware Compatibility List (HCL). While CPU and RAM dictate performance, storage requirements

💡 Disk latency is the silent killer of CUCM clusters. If your storage cannot keep up with database replication, the cluster will become "out of sync," leading to administration failures and call processing issues. Network Interface Cards (NIC) 1 Gbps or 10 Gbps Ethernet interfaces are required. VMware vSwitch must be configured to prevent packet loss. Planning for High Availability (HA) In a virtualized environment, the requirement shifts to