Where should the server rack go?
On this page
- Key facts
- Why does rack location matter so much?
- How do I manage heat?
- Can the rack go in the mechanical room?
- How do I handle noise?
- Who should be able to get in?
- What goes in the rack?
- Where does the internet line come in?
- When should the rack location be decided?
- How FloorStack helps
- Free tools for this step
- Frequently asked questions
- Sources
In a central, locked closet with its own ventilation and power, not the mechanical room. The 2026 rules: every cable run within 295 feet of the rack, a dedicated 20-amp circuit, a lock, and distance from the compressor and vacuum, which run hot (FloorStack). A 3' × 3' to 4' × 4' closet is often enough (Dental Economics).
Key facts
| Requirement | Guideline | Source |
|---|---|---|
| Closet size | About 3' × 3' to 4' × 4' | Dental Economics |
| Cooling | Vented door, thermostatic fan set at 80°F, HVAC diffuser | Dental Economics |
| Recommended equipment inlet temperature | 18–27°C (64.4–80.6°F) | ASHRAE reference card (PDF) |
| Power | Dedicated 20 A circuit | FloorStack |
| Distance | Cat6 runs under 295 ft from the rack | FloorStack |
| Standard limit | 90 m permanent link; 100 m channel | Fluke Networks |
| Security | Keep network closets locked; badge or coded access preferred | HHS 405(d) HICP (PDF) |
Why does rack location matter so much?
Because every cable ends there. FloorStack's cabling guide says every cable home-runs to one place, and a central location keeps every drop inside the 295-foot limit without a second closet (FloorStack). That limit comes from the cabling standard: Fluke Networks explains that the permanent link maxes out at 90 m and the full channel, with patch cords, at 100 m (Fluke). Put the rack at one end of a long suite and the far operatories may not make it.
Location also decides how hot the equipment runs, how loud the office is, and who can walk up and plug in.
How do I manage heat?
Network gear and servers produce heat continuously, and a closed closet traps it. ASHRAE's thermal guidelines recommend 18 to 27°C (about 64 to 81°F) at the equipment inlet (ASHRAE). Lawrence Berkeley National Laboratory's small server room fact sheet lists the same recommended range of 64.4–80.6°F (LBNL).
Dental Economics recommends a vented door, a thermostatically activated fan set at 80°F and a ceiling diffuser connected to the HVAC system (Dental Economics). Ask your mechanical engineer to add the closet's heat load to the HVAC design, and remember that office HVAC may set back at night and on weekends while the rack keeps running. See dental office HVAC.
Can the rack go in the mechanical room?
Usually not. FloorStack's guide says the rack needs distance from the compressor and vacuum because mechanical rooms run hot, and to confirm the heat load before committing (FloorStack). Compressors and vacuums also add noise and, depending on type, moisture. Size the mechanical equipment first so you know what heat and space it needs; the free compressor & vacuum sizing calculator (coming soon) is planned for a first estimate. See the dental mechanical room.
How do I handle noise?
Switches, servers and UPS units have fans. A closed closet with a solid-core door keeps noise out of operatories and consult rooms, but it needs the ventilation above. Dental Economics suggests locating the closet off a transition corridor separating operatories from private spaces such as bulk storage and staff and doctors' offices (Dental Economics). Avoid sharing a wall with a quiet operatory or consult room.
Who should be able to get in?
Staff who need to, and no one else. HHS's cybersecurity practices say to keep data and network closets locked, preferably with badge readers or coded locks rather than keys, to audit access (for example, with a camera), to change codes after staff leave, and to disable unused network ports (HHS 405(d) HICP). The closet should be off a staff corridor, never reachable from the waiting room, but easy for an IT technician to reach without walking through a procedure.
What goes in the rack?
A typical dental rack holds:
| Item | Notes |
|---|---|
| Patch panels | One port per labeled drop |
| Firewall/router | Plus ISP modem or ONT |
| PoE switch(es) | Powers APs, cameras and phones |
| Server or NAS | If not fully cloud |
| Imaging reconstruction server | Dentsply Sirona says its RCU usually goes in the server closet (Dentsply Sirona) |
| Camera NVR | If on-premises |
| UPS | Sized for the full rack |
Server-versus-cloud changes the rack's size and heat; see server vs cloud.
Where does the internet line come in?
The ISP's fiber or cable handoff should terminate in or near the rack room, so the modem or ONT sits next to the firewall. FloorStack's startup guide warns that fiber installs can take 30 to 60 days and says to order internet as soon as the lease is signed (FloorStack). Tell the provider where the rack will be before they survey the building, and ask your contractor to run conduit from the building's entry point to that room. If you want a backup line from a second provider, plan a second entry path to the same room. See dental office internet speed.
When should the rack location be decided?
At lease signing or early design. FloorStack's startup guide lists rack room size, power and cooling among the first items to plan, and says to share the plan with the architect so the rack room and conduit are drawn in (FloorStack). The free network & IT plan generator (coming soon) is planned to place the rack and check run lengths from your floor plan, and FloorStack Studio (live, free plan) produces a floor plan with every drop labeled, a device schedule and a rack elevation (FloorStack). See the low-voltage plan and network diagram examples.
How FloorStack helps
FloorStack is a dental build-out platform that places the rack before walls go up. FloorStack Studio (live, free plan) lays out the rack and every cable run. The network & IT plan generator and compressor & vacuum sizing calculator are free tools coming soon. Back to the Dental Office IT Setup hub.
Free tools for this step
- Network & IT plan generator (free tool, coming soon): turn your floor plan into a drops, rack, Wi-Fi and VLAN plan.
- FloorStack Studio (live, free plan): a 3D IT plan of your office with every device placed.
- Compressor & vacuum sizing calculator (free tool, coming soon): size the compressor and vacuum to your chair count; confirm with your dealer.
Frequently asked questions
How big should a dental office server closet be?
About 3' × 3' to 4' × 4' for most offices (Dental Economics); larger if it holds servers and an NVR.
What temperature should a server closet be?
ASHRAE recommends 18–27°C (64.4–80.6°F) at the equipment inlet (ASHRAE).
Can I put the network rack in the mechanical room?
FloorStack advises against it; the rack needs distance from the compressor and vacuum because mechanical rooms run hot (FloorStack).
How far can network cable run from the rack?
Keep Cat6 runs under 295 ft; the standard limit is a 90 m permanent link (Fluke).
Does the rack need a dedicated circuit?
FloorStack recommends a dedicated 20 A circuit at the rack location (FloorStack).
Should the server closet be locked?
Yes. HHS recommends locked closets with badge or coded access (HHS 405(d)).
Sources
- FloorStack: Cabling before drywall
- FloorStack: New startup
- Dental Economics: The impact of technology on office design
- ASHRAE: Thermal Guidelines for Data Processing Environments, reference card (PDF)
- Lawrence Berkeley National Laboratory: Small server room efficiency fact sheet (PDF)
- Fluke Networks: Channel, permanent link and patch cords
- HHS 405(d): Health Industry Cybersecurity Practices, Technical Volume 1 (PDF)
- Dentsply Sirona: Imaging Site Survey, Version 44 (PDF)
More in Dental Office IT Setup
- Network Requirements for Dental Imaging and CBCTWhat network dental imaging needs in 2026: wired 1 Gbps for CBCT, static IPs, open ports and storage for 3D scans of up to 1.3 GB, from vendor site surveys.5 min read
- VLAN Design for Dental Offices: Clinical, Imaging, Phones, GuestHow to set up VLANs in a dental office in 2026: a six-segment example for clinical, imaging, phones, cameras, guest and management, with HHS and CISA guidance.5 min read
- HIPAA-Compliant Wi-Fi for Dental OfficesHow to make dental office Wi-Fi HIPAA compliant in 2026: WPA3, a separate guest network, unique logins, quarterly checks and what HIPAA actually requires.5 min read
- IT Onboarding Checklist for a New Dental StartupAn MSP's 2026 IT onboarding checklist for a dental startup: contract and BAA, owner-held accounts, network plan, PMS specs, security baseline and go-live tests.6 min read
- How to Back Up a Dental Practice: 3-2-1 and HIPAA (2026)How a dental practice should back up patient data in 2026: the 3-2-1 rule, offline copies, tested restores, imaging files and what HIPAA requires.6 min read
- Choosing a Firewall for a Dental OfficeHow to choose a dental office firewall in 2026: vendor support dates, IPS, VLANs, MFA-protected VPN, logging and owner-held admin access, vendor-neutral.5 min read