Floor + 3D
Drag-and-drop cabinets and row PDUs. Toggle 2D plan and interactive Three.js racks.
Latest v0.3.150 · Aug 14, 2026
Complete data center infrastructure management
ColdAisle is modern DCIM for the whole floor — cabinets, 3D racks, power, cooling, cabling raceways, SNMP, and work orders. The application runs on Windows (IIS + PHP + SQL Server), with local / LDAPS / Entra ID auth and one-click updates from GitHub.
Get on GitHub View releases Features
Free and open source (MIT). Self-hosted on your servers — your inventory never leaves your facility. This site does not host the app.
See the ops console
UI language from the floor: cabinets, U-space, PDUs, raceways, SNMP, NOC wall.
On-premise by design
Your datacenter map does not belong in someone else’s cloud
Cabinet layouts, power paths, SNMP credentials, and who sits in which U are operational secrets. ColdAisle is built for a self-contained install you run — not a multi-tenant SaaS that holds your floor on another company’s servers.
Possession
Your servers, your database
IIS + SQL Server in your rack or your VM. Backups, auth, and SNMP secrets stay inside your perimeter.
Transparency
Open source on purpose
MIT, public GitHub. You can read what the code does with your data. No black-box appliance, no “trust our cloud.”
Built in the trenches
By a working infrastructure admin
Written by a network infrastructure administrator who runs floors for a living — not a generic SaaS backlog.
Coming from openDCIM?
Full migration — preview, then run
Import a live openDCIM API (or offline JSON dumps) into ColdAisle. Mode A merges into the data center you already laid out and never overwrites cabinet floor positions. Test connection, preview a dry-run, then run: data ports, CDUs / power maps, cabinet audits, and template images come across with the inventory.
The app runs on Windows. The job is the whole datacenter.
Linux, network, and mixed floors are the point. You host ColdAisle on IIS + SQL Server — you do not have to run a Windows-only site.
Host
IIS + PHP + SQL Server
The application stack. Express is fine. A browser wizard creates the database, schema, and first admin.
Scope
The entire floor
Racks, power, cooling, raceways, SNMP, work orders, audits — not just Windows servers in the cabinets.
Auth
Local · LDAPS · Entra ID
Active Directory nested groups and Microsoft Entra OIDC SSO alongside local accounts.
What operators actually use
Power
A/B zones, panels, multi-phase PDUs, outlet inventory, history charts, near/overload alerts.
Raceways
Ladder, fiber U-channel, trough, conduit. Multi-hop paths and shortest-path calculation.
SNMP
v2c/v3, encrypted secrets, MIB upload, Discover, OID templates, scheduled poll worker.
openDCIM migration
Live API or JSON dumps. Preview first. Mode A keeps the floor plan you already placed.