Metro reference
Toronto data centres: facilities, grid and UPS planning
Downtown carrier buildings, suburban campuses, the grid behind them, and what that means for UPS and battery planning.
- Directory records
- 27
- Operators
- 9
- Localities
- 5
Toronto is a connected metro, not one address
The Toronto market extends from downtown carrier buildings to Markham, Vaughan, Brampton and Mississauga. Telehouse, Cologix and other providers operate or market space in central interconnection buildings. Digital Realty and Equinix publish larger suburban facilities. Hut 8 Canada names Mississauga and Vaughan sites. The metro count therefore includes both dense network nodes and facilities built for different space and power requirements.
Sources: Telehouse Canada, Digital Realty, Equinix, Hut 8 Canada
Multiple operator records can point to the same physical building because each source describes its own facility or service presence. Two records for one building stay separate until a source shows they are the same site. When comparing Toronto options, first settle whether the comparison is between buildings, operators, suites or network access.
Sources: Telehouse Canada, Cologix, Canadian Web Hosting
Downtown facilities are defined by interconnection
Telehouse Canada publishes facilities at 151 Front Street West, 250 Front Street West and 905 King Street West, connected by dark fibre. It reports 20 MW and 205,000 square feet of IT space at 151 Front, with 10 MW figures at each of the other locations. The operator also describes direct access to the Toronto Internet Exchange at 151 Front. These are clear differentiators for network-led deployments.
Sources: Telehouse Canada
Downtown interconnection does not answer every workload need. Floor loading, cooling density, construction access, power expansion and maintenance windows can favour another building. A common architecture places network exchange and cloud access in the central carrier ecosystem while primary compute or recovery systems use a suburban facility. A building listed near an exchange is not, by that fact, connected to it or a tenant of it.
Sources: Telehouse Canada, Digital Realty
Suburban facilities add size and different utility paths
Digital Realty's Toronto page names TOR11 in Vaughan, YYZ10 in Markham and YYZ12 downtown. It publishes individual building sizes, including 104,300 square feet for YYZ10. The YYZ10 page also lists 2N UPS redundancy, N+1 cooling and selected compliance and sustainability certifications. These details belong to that facility record and are not copied across the metro.
Sources: Digital Realty, Digital Realty
Equinix publishes six Toronto-area facilities across Toronto, Markham and Brampton. Cologix publishes five Toronto facilities, including Markham sites. This suburban spread can improve options for space, parking, loading and geographic separation, but each address has a distinct grid and fibre context. A metro label alone is not enough for a technical shortlist.
The grid behind the buildings
Each address sits on its own utility path. A downtown carrier building and a Vaughan campus can be fed by different local utilities and different parts of the transmission system, so one site's supply record says little about another's.
New large loads in Ontario go through transmitter and IESO studies before they are energized. Added utility capacity therefore reaches a site on the grid's schedule. Until it does, growth inside an existing building is carried by the UPS, battery and generator plant already installed.
Using the Toronto facility list
The records below cover Toronto, Markham, Vaughan, Brampton and Mississauga. Each opens to its locality, source, check date and facility-specific claims. An unverified capacity field means the public source stated no value, not that the facility lacks capacity.
Sources: Digital Realty, Equinix
Toronto critical power
Toronto data centres and UPS operations
Toronto's data-centre market from the UPS side: who owns which equipment, the battery fleet, maintenance windows and what the grid means for backup power.
- 01Source and transfer
Utility service, generator interface, switching controls and the operating states that move the load.
- 02Conversion and bypass
UPS modules, static bypass, external maintenance bypass and the capacity left during service.
- 03Stored energy
Battery strings, cabinets, protection, monitoring, environment and a recorded replacement basis.
- 04Distribution and evidence
PDU, RPP, STS, alarms, settings, drawings, test results and accountable follow-up.
The UPS service problem changes across the GTA
Published sources place 27 data centres across Toronto, Markham, Vaughan, Brampton and Mississauga. Telehouse publishes three downtown locations; Equinix, Cologix, Digital Realty and eStruxture publish most of the rest. None of that describes the UPS in a given suite: its condition, its batteries, its spare capacity or the tenant's maintenance rules. Those facts come from the owner.
Sources: Telehouse Canada, Equinix, Cologix, Digital Realty
Downtown, the building shapes the visit as much as the UPS: security clearance, freight-elevator bookings, escort rules, shared electrical rooms and an overnight window. A battery string travels from the truck through a multi-tenant carrier building. The suburban sites usually have more room for receiving and staging, with different utilities, site procedures and travel times.
Sources: Telehouse Canada, Eaton, Equinix
Settle ownership first. In colocation, the operator owns the base-building UPS plant and the tenant owns the rack UPS units and battery packs in the suite, under different contracts. The scope names the assets, who can authorize work on them and who accepts the report.
Sources: Digital Realty, Schneider Electric, Eaton
Batteries are a fleet, not a replacement date
Keep a battery inventory that works during an alarm: each string, cabinet, chemistry, approved battery type, block count, install date and the load it carries. A string with mixed ages needs a note on every replaced block. With that record, a reading can be traced to one block, one string or the whole system.
Read the same points the same way at every visit: shelf temperature, float voltage, block values and terminal heat. A block drifting away from its neighbours deserves attention before it crosses any generic limit. A capacity test shows how long the string will run, but it drains the reserve, so it needs a recharge plan and a quiet day.
| Planning topic | VRLA | Lithium-ion |
|---|---|---|
| Space and weight | Familiar cabinet and rack formats, with footprint driven by runtime and string count. | Often offers higher energy density, but cabinet approval, protection and integration still control the design. |
| Temperature and environment | Condition and expected life are closely tied to temperature, airflow and uniform conditions across the string. | Thermal limits and emergency controls remain chemistry and cabinet specific and must follow the approved system. |
| Monitoring | String and block readings gain value when the same method and baseline are retained over time. | Battery-management communications, alarms, protection logic and firmware become part of the operating record. |
| Lifecycle work | Replacement planning considers age, trend, environment, event history, string uniformity and owner risk. | Longer service expectations do not remove inspection, compatibility checks or an approved end-of-life plan. |
UPS preventive maintenance for Toronto data centres
A yearly visit is the baseline for data-centre UPS maintenance on most central systems, with shorter intervals where age, heat, alarm history or criticality call for them. Each visit starts from the asset list, the single-line diagram, the last report and the open alarms, and records the starting and final states.
Sources: Schneider Electric, Eaton, Eaton
Work that moves the load, such as a bypass transfer or a battery discharge, waits behind written hold points, with a named person directing the switching. If the labels, the diagram and the breaker positions disagree, the work stops until they agree. A deferred test is reported as deferred, not as passed.
Sources: Schneider Electric, Eaton
| Scope | Inspect | Record |
|---|---|---|
| Environment | Ambient condition, ventilation, dust, moisture and restricted airflow. | Readings, affected location and corrective owner. |
| UPS power path | Input, output, bypass, charger values and protection settings. | Measured values, settings checked and exceptions. |
| Wear components | Fans, filters, capacitors, connections and signs of heat or stress. | Condition, lifecycle recommendation and required parts. |
| Battery system | Cabinets, cells, DC connections, temperature, voltage and available trend data. | String-level results, anomalies and replacement basis. |
| Controls and alarms | Event history, local and remote alarms, monitoring path and approved firmware state. | Open alarms, changes made and verification result. |
| Functional work | Transfer, bypass, generator interface or outage simulation only under the approved method. | Test state, observed result, rollback and sign-off. |
| Closeout | Final operating state, restored alarms, housekeeping and open recommendations. | Owner, due date, severity and next review trigger. |
- 01Watch
Continuous monitoring, alarm triage and environment review.
- 02Trend
Scheduled battery, load, temperature and event-history review.
- 03Maintain
Controlled annual or risk-based preventive maintenance under an approved work method.
- 04Renew
Planned replacement, post-event assessment and records returned to operations.
What this means for UPS and battery planning
Added utility capacity reaches a Toronto building on the grid's schedule, so growth inside an existing suite lands on the UPS, batteries and generator already in place. Before adding racks, check the capacity left after removing the largest UPS module, and size battery runtime for the string near the end of its life.
Sources: Independent Electricity System Operator, Eaton
For each site, keep four documents current: the asset list with battery dates, the last maintenance report with block readings, the method of procedure for the bypass, and a replacement plan dated from the manufacturer's support phase. Maintenance, battery replacement, emergency repair and replacement planning each cover one of them.
Sources: Eaton, Schneider Electric