openDCIM vs Sentry Power Manager

openDCIM is a free, web-based application for tracking data center inventory and managing physical infrastructure. Its stated goals include following assets across multiple rooms and managing space, power, and cooling. Custom image maps can show clickable cabinet zones with overlays for power, space, temperature, and weight capacity. The application maps power paths from devices through strips and panels to source feeds, and network links to devices classified as switches. It reports fault tolerance and can simulate the effect of a panel or source-feed outage. Integrations include intelligent power strips and UPS devices from APC, Geist Manufacturing, Liebert, and Server Technologies; OIDs can be updated for other manufacturers. Built on MySQL, it supports report building and exporting data to other applications. Multiple user-rights levels are available, with authentication through Apache or LDAP. It is GPL v3 software for on-premises use. Hosting requirements include Linux, Apache 2.x or higher with SSL, MySQL 5.x or higher, PHP 8.0 or higher, and a web-based client.

Sentry Power Manager (SPM) provides a central interface for managing, monitoring, and controlling intelligent rack PDUs across data centers. It monitors power and environmental readings, tracks trends, and estimates when capacity, power, or temperature thresholds may be exceeded. Its SNAP feature applies system, IP, and security templates and can automate firmware updates and configuration changes. Scheduled reports can be displayed, exported, or emailed, with information on billing, carbon footprint, rack redundancy, and energy use. The system is described as an appliance for a server or VMware environment, accessed through a browser-based GUI. Its documented API exchanges power and environmental data with BMS and DCIM systems, and optional REST and SOAP API support is listed. Access can be authenticated locally or through LDAP or TACACS+ servers, with SSL certificate uploads supported. Listed PDU compatibility includes Server Technology CDUs and third-party families from APC, Eaton, Raritan, and Tripp Lite. Version 6.3 is identified as the final major release and final downloadable version. Pricing is on request; a 120-day trial download is offered.