Data Center 101 on Chung-Hao Lee

【Data Center 101】Energy Efficiency and Space Economics: The PUE Family, WUE, GUE, and the Impossible Triangle

Tue, 09 Jun 2026 00:00:00 +0000

Every watt of electricity flowing into a data center has only two destinations: it either powers IT equipment doing useful work, or it disappears into cooling, lighting, power conversion, and the long list of “everything else.” The ratio between those two destinations is the single most important number in the industry. It has a name (PUE), a target (1.0), and a price tag that runs into the tens of millions of dollars per year for any operator above 10 MW.

【Data Center 101】Reliability Engineering: Uptime Tier, TIA-942, and the Six Redundancy Patterns

Mon, 08 Jun 2026 01:00:00 +0000

Inside a Tier IV data center, you can walk over to the main electrical panel, flip the master breaker to OFF, and watch nothing happen. The servers keep running. The cooling keeps flowing. The lights stay on. Somewhere in another room, a fully redundant parallel system has taken the load without a flicker.

That ability — to survive any single failure invisibly — is what “reliability” actually means in this industry. It is not a marketing word. It is an engineered property with named tiers, measurable thresholds, and a cost curve that bends sharply upward at the top.

【Data Center 101】The Data Center Supply Chain: From Copper Mines to AI Clusters

Mon, 08 Jun 2026 00:00:00 +0000

In 2026, a high-voltage transformer that used to ship in 12 months now takes 5 years. 3M is winding down production of the fluoroketone fire suppression chemical sitting inside roughly half the world’s data centers. NVIDIA H100 GPU lead times have been longer than the time it takes to train a frontier model.

Each of these is a single supplier decision rippling through thousands of facilities — and they are happening at the same time. To build, operate, or invest in data centers today, you have to read the supply chain like a map of fault lines.

【Data Center 101】Introduction: The Five-Layer Architecture, Industry Chain, Lifecycle & Classification

Sun, 07 Jun 2026 00:00:00 +0000

進入數據中心的第一張地圖：五層架構、產業鏈、生命週期、四大類型。

【Data Center 101】TCO Economics: Why Data Centers Are an OPEX-Dominated Business

Sun, 07 Jun 2026 00:00:00 +0000

If you asked a CFO to guess where most of a data center’s lifetime money goes, the typical answer would be “the servers” or “the building.” The actual answer is electricity — almost 58% of total operating expenses over a 10-year span. That single fact rewrites how the entire industry thinks about investment decisions.

如果你問一位 CFO「數據中心一輩子的錢主要花在哪裡？」，典型答案會是「伺服器」或「建築物」。但實際答案是電費 —— 在 10 年生命週期裡，電費佔總運營支出將近 58%。光這一個事實就改寫了整個產業看待投資決策的方式。