As I write this, millions of people in Texas are without power in the middle of a historic winter storm. Temperatures have plunged to levels the state’s infrastructure was never designed to handle, and the electrical grid — operated independently from the rest of the continental US by ERCOT — has failed catastrophically. Rolling blackouts that were supposed to last 45 minutes have stretched into days. People are burning furniture for warmth. It’s a humanitarian crisis.
But it’s also an infrastructure crisis with direct implications for the tech industry. Texas hosts a significant concentration of data centers, particularly in the Dallas-Fort Worth area and San Antonio. And this week, we’re seeing what happens when the physical layer that our digital infrastructure depends on simply stops working.
The Data Center Impact#
Multiple data center operators in Texas have reported disruptions. Some facilities have switched to diesel generator backup, which works — until you run out of fuel and the roads are too icy for delivery trucks. Others have experienced cooling failures as HVAC systems struggle with the sustained cold and power instability.
Cloud providers with Texas presence have been largely transparent about the situation. AWS reported some impact to services in the US-East-1 region (Virginia) as well, partly due to cascading effects from interconnected networks. Google Cloud and Microsoft Azure have both acknowledged elevated error rates for some customers with Texas-based resources.
The irony isn’t lost on me: data centers are typically designed to handle heat, not cold. Cooling is usually the primary environmental concern. But when outside temperatures drop below what the building systems were designed for, water pipes freeze, diesel fuel gels, and mechanical systems that have never been tested at -15°C start failing in unexpected ways.
Multi-Region Isn’t Optional Anymore#
If you’re running production workloads in a single region — any single region — the Texas crisis should be your wake-up call. I’ve had this conversation with engineering teams more times than I can count: “We don’t need multi-region, we’re in us-east-1 and it’s reliable.” Or, “Multi-region is too expensive and complex for our scale.”
The cost calculation changes dramatically when you factor in the probability of extended outages. Single-region deployments are a bet that your chosen region won’t experience a significant disruption during the lifetime of your service. The Texas power crisis, the 2017 AWS S3 outage, and the 2020 Cloudflare backbone issues all demonstrate that this bet is riskier than many teams assume.
Multi-region doesn’t have to mean active-active replication of everything. A practical starting point for many applications:
- DNS-based failover with health checks that route traffic away from an unhealthy region
- Database read replicas in a secondary region that can be promoted if needed
- Static assets and CDN already serve from multiple points of presence — make sure your application can degrade gracefully if the primary API is unavailable
- Infrastructure as Code that allows you to spin up a complete environment in a new region within hours, not days
The key insight is that multi-region resilience is a spectrum, not a binary choice. Even basic preparations — tested backups in a different region, documented runbooks for regional failover, regular disaster recovery drills — dramatically improve your resilience posture.
The Physical Layer We Forget About#
Working in cloud and DevOps, it’s easy to develop an abstraction mindset. We think in terms of regions, availability zones, managed services, and auto-scaling groups. The Texas crisis is a stark reminder that all of those abstractions run on physical machines, in physical buildings, powered by physical electrical grids, cooled by physical HVAC systems.
I remember working on a project years ago where we specified that our disaster recovery site needed to be in a different seismic zone from our primary data center. The facilities team thought we were being paranoid. But the principle is sound: your failure modes should be as uncorrelated as possible. If both your primary and backup are in the same power grid, or the same flood plain, or the same hurricane path, your redundancy provides less protection than you think.
The Texas power grid’s isolation — ERCOT operates independently from the Eastern and Western Interconnections — was designed for regulatory autonomy. But it also means Texas can’t easily import power from neighboring states during a crisis. There’s a lesson there for system design: isolation provides independence, but it also limits your options during failure. Sound familiar? It’s the same trade-off we navigate with microservice architectures, network segmentation, and blast radius management.
Infrastructure as Code and Disaster Recovery#
One practical outcome of this crisis should be renewed attention to disaster recovery testing. I’m consistently surprised by how many organizations have disaster recovery plans that have never been actually tested. A runbook that says “fail over to us-west-2” is worthless if nobody has ever executed it end-to-end.
If you’re using Terraform, CloudFormation, or Pulumi, you have the foundation for reproducible infrastructure. The question is: can you actually deploy your full stack in a new region from scratch? What manual steps are hidden in your “automated” process? What state or data needs to migrate? What DNS changes need to propagate?
I’d recommend scheduling a quarterly “region evacuation” drill where you actually deploy your application to a secondary region and route a percentage of test traffic to it. The first time you do this, you’ll discover a dozen things that don’t work. That’s the point — finding those gaps during a drill, not during a crisis.
My Take#
The Texas power crisis is primarily a human tragedy, and my thoughts are with the people affected. But for those of us who build and operate digital infrastructure, it’s also an urgent reminder that our systems exist in the physical world.
Cloud providers have done remarkable work abstracting away physical infrastructure concerns, but abstraction doesn’t eliminate risk — it just moves it out of sight. When the grid fails, the abstractions fail with it.
If your team hasn’t reviewed its regional resilience strategy recently, this week is a good time to start. And if your disaster recovery plan lives in a document that nobody has read since it was written, it’s time to dust it off and actually test it. The next crisis won’t give you advance warning.