Is colocation cheaper than running your own server room? We break down the true costs of on-premises infrastructure vs. colocation hosting for SMB and mid-market companies.
The Real Question: Total Cost of Ownership
The on-prem vs. colocation debate isn't about monthly rent — it's about total cost of ownership over 3-5 years. Companies that only compare their electric bill to a colocation quote are missing 80% of the equation.
On-premises infrastructure costs include space, power, cooling, redundancy, maintenance, staffing, insurance, and opportunity cost. Colocation costs include rent, power, connectivity, and support. When you put real numbers to both sides, the answer often surprises people — in both directions, depending on scale.
On-Premises: The Hidden Costs
Most businesses underestimate on-prem costs because they're distributed across departments and budget lines:
• Space — Dedicated server rooms require raised flooring, fire suppression (FM-200 or clean agent), controlled access, and environmental monitoring. Even a modest closet costs $50-100K to build to spec.
• Power — Servers need clean, redundant power. A proper UPS system (N+1 online double-conversion) for 2-4 racks costs $15-40K installed. Batteries need replacement every 3-4 years ($5-10K).
• Cooling — Precision cooling for a server room runs $20-50K installed, plus $3-8K/year in maintenance and energy. Standard building HVAC cannot maintain the temperature and humidity servers need.
• Generator — If uptime matters, you need a generator. Installed cost: $30-80K depending on capacity. Annual maintenance and fuel testing: $3-5K.
• Internet — Redundant business-class circuits with SLA: $1-5K/month depending on bandwidth and carrier diversity.
• Staffing — Someone has to manage this infrastructure. Whether it's 20% of an IT person's time or a dedicated facilities engineer, that's $15-50K/year in loaded labor cost.
• Insurance — Riders for equipment, business interruption, and liability add $2-10K/year.
Total 5-year TCO for a modest on-prem setup (2-4 racks): $250,000-$500,000
Colocation: The Transparent Costs
Colocation consolidates all of those line items into a predictable monthly bill:
• Cabinet rent — $500-2,000/month for a full 42U cabinet (varies by market)
• Power — $200-800/month per kW committed (metered) or included in rent (blended)
• Cross-connects — $200-500/month per carrier connection
• Bandwidth — $5-15 per Mbps committed, or included in a bundle
• Smart hands — $0-200/month if included in plan, or per-incident billing
• Setup/installation — $500-2,000 one-time
Total 5-year TCO for equivalent capacity in colocation: $120,000-$300,000
The colocation model also eliminates capital expenditure. No $50K UPS purchase, no $80K generator, no $100K buildout. It's all operational expenditure — predictable, budget-friendly, and tax-deductible as a service cost.
When On-Prem Makes Sense
Colocation isn't always the answer. On-premises makes sense when:
• Data sovereignty requirements mandate physical control (certain government/defense contracts)
• Latency to local users is critical and no colocation facility is nearby
• You already have a fully built-out, paid-off facility with remaining useful life
• Your workloads are so large (20+ racks) that you'd fill a private suite anyway, and you have the real estate
• Regulatory requirements prohibit shared facilities
For most SMB and mid-market companies with 1-10 racks of infrastructure, colocation wins on cost, reliability, and scalability.
The Hybrid Approach
Many companies find the optimal answer is hybrid: keep latency-sensitive or compliance-restricted workloads on-prem, and colocate everything else.
Common hybrid patterns:
• On-prem: development environments, local file servers, print infrastructure
• Colocation: production applications, customer-facing services, disaster recovery
• Cloud: burst capacity, SaaS applications, global distribution
The key is matching each workload to the right hosting model based on latency, compliance, cost, and availability requirements — not defaulting everything to one model.
Making the Decision
To evaluate your specific situation, you need three numbers:
1. Your current annual infrastructure spend (all-in: space, power, cooling, staff time, maintenance)
2. Colocation quotes for equivalent capacity from 2-3 facilities in your target market
3. Your growth trajectory — how many racks will you need in 3 years?
If colocation saves 30%+ over your current model, the decision is clear. If it's within 10%, other factors (reliability, scalability, staff focus) become the tiebreaker.
DCIS helps companies run this analysis with real numbers, not guesses. We'll assess your current environment, model the colocation alternative, and recommend the path that optimizes cost and reliability. Contact us for a no-obligation assessment.