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Demystified
The myths that cost clients money.
The expensive mistakes in data center projects almost always start with a misunderstanding. Here are the ones we correct most often — and the core concepts, explained plainly.
Myth vs fact
Four expensive misunderstandings.
MYTH A Tier IV data center needs two utility power feeds.
Fact: Tier IV needs two independent, simultaneously active distribution paths — not two utility sources. The Uptime Institute treats on-site generators as the primary source and utility as an economic supplement, so a single utility feed doesn't disqualify Tier IV. Two feeds alone earn zero Tier credit.
MYTH Any air conditioner can cool a server room.
Fact: Comfort AC is built for people — it strips out too much humidity and isn't rated for continuous high-sensible-heat loads. Data centers need precision (CRAC/CRAH) cooling with tight control and 24×7 duty.
MYTH More cooling tonnage is always safer.
Fact: Oversized cooling short-cycles, wastes energy and struggles with humidity. Right-sizing plus good airflow (containment, blanking panels) beats brute tonnage — and cuts your PUE.
MYTH "We're moving to cloud, so we don't need a data center."
Fact: Latency, data-localisation rules and cost at scale keep on-prem and colo relevant — most Indian enterprises run hybrid. The question is how much to keep in-house, not whether.
Core concepts
Explained plainly.
What do the Uptime Tiers (I–IV) actually mean?+
Tier I — basic, single path, no redundancy. Tier II — redundant components (N+1) but one path. Tier III — concurrently maintainable: two paths, one active, so you can service anything without downtime. Tier IV — fault tolerant: two active paths (2N), survives any single failure automatically. Match the tier to what downtime actually costs your business. See the full comparison →
N, N+1, 2N, 2N+1 — what's the difference?+
N is exactly the capacity you need. N+1 adds one spare unit, so any single component can fail with no impact. 2N is two complete, independent systems. 2N+1 adds a spare to each side — highest resilience, highest cost.What is PUE and why should I care?+
Power Usage Effectiveness = total facility power ÷ IT power. A PUE of
1.0 means every watt reaches the IT; real facilities run roughly 1.4–2.0. Lower is better — it reflects how efficient your cooling and power distribution are, and it drives your electricity bill for the life of the DC.Do I need a raised floor?+
Not always. Raised floors were traditionally used for under-floor cooling and cabling; many modern builds use overhead routing with in-row or contained cooling instead. It's a design choice driven by your cooling strategy, not a mandatory item.
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