Kepserver Enterprise Vs: Kepserverex

| Feature | KepserverEX (Standard) | Kepserver Enterprise | |--------|----------------------|----------------------| | Deployment | Single Windows instance | Multi-node, load-balanced cluster | | Failover | Manual or basic third-party tools | Automatic, built-in failover | | Centralized Management | No (per-instance config) | Yes (Configuration API / central admin) | | Licensing | Per-instance, per-device tag count | Per-node + enterprise-wide tags | | Best for | Small to mid-size sites | Large-scale, mission-critical operations |

Both products come from PTC (formerly Kepware), and they share the same core engine. The difference isn't in basic connectivity—both can connect to PLCs, OPC DA/UA servers, databases, and IoT devices. The distinction lies in deployment architecture, scalability, and high availability.

This is the most distinct operational difference between the two. kepserver enterprise vs kepserverex

  • KEPServer Enterprise:

    • If you are managing a modern, complex industrial environment with high data throughput, redundancy requirements, or a mix of legacy and modern protocols, you are likely looking at KEPServer Enterprise. | Feature | KepserverEX (Standard) | Kepserver Enterprise

    If you have a small, standalone machine or a simple data collection task, KEPServerEX (operating under a "Core" or "Connectivity" license tier) is likely sufficient.

    Based on benchmark tests from Kepware user groups and internal PTC documentation: Both products come from PTC (formerly Kepware), and

    | Metric | KepserverEX (Single High-end Server) | Kepserver Enterprise (Two Mid-range Servers) | | :--- | :--- | :--- | | Max Sustained Tag Updates/sec | 250,000 | 400,000 (spread across pair) | | Failover Time (detection to recovery) | N/A (manual) | 3–8 seconds | | Data Loss on Failover | All in-memory values | 0 (zero) | | Alarm ACK persistence | No | Yes | | CPU Overhead for Redundancy | 0% | +15–20% on standby node | | Network Utilization (extra) | 0 Mbps | +30% (due to mirroring) |

    Source: Kepware Best Practices Guide 2023.

    KepserverEX (Version 6.x and later) is the industry workhorse. It is a single-server, monolithic OPC server designed for machine-to-machine (M2M) communication at the edge or in a small-to-medium control room.

    Key characteristics: