Introduction
“Data has gravity”—this phrase has become so common in tech circles it’s practically a cliché. Yet the fundamental truth remains: once your data settles into a cloud environment, moving it elsewhere becomes a formidable challenge.
However, a growing number of enterprises are discovering compelling reasons to overcome this gravitational pull and “repatriate” their data from public clouds back to on-premises infrastructure. Whether driven by skyrocketing costs that can be 65-70% higher than on-premises alternatives, data sovereignty concerns in an increasingly complex regulatory landscape, or the need to co-locate data with AI initiatives and infrastructure, organizations are finding that the cloud isn’t always the answer.
Below, we outline the top reasons why enterprise accounts are bringing their data home and how to execute this migration readily and cost-effectively.
Cost
The most powerful driver of cloud repatriation is economics. The numbers tell a stark story: on-premises storage can cost 65-70% less than public cloud storage over a five-year period. This isn’t just theoretical—it’s mathematics that’s reshaping enterprise IT strategies.
Let’s examine a real-world scenario.
Imagine your organization expects to store 10 PiB (petabytes) of data, with storage requirements starting at zero and growing steadily each month to reach 10 PiB in 5 years. Let’s make it easy and grow the same each month for 60 months to reach the 10PiB. Quick math says
- we add ~170.6TiB each month.
- That maps out to $6.7M total cost over 5 years using ‘standard’ storage pricing of $0.021/GiB/month.
That is significantly higher than the cost of on-premises storage, even when accounting for space, power, cooling and management costs.
And these cloud costs are before you add in the extra charges of cloud storage such as
- API charges,
- minimum object size charges,
- and retrieval charges from lower cost storage classes (both per object and per GiB charges).
On average, these are 8% of a monthly cloud storage bill (your mileage will vary!). These charges are utterly NON-EXISTENT on premises. So yes, cloud storage costs you more.
What about discounts you say?!?! Great question. A quick check of our favorite AI assistant will likely show that enterprise customers can expect 50% or more off list pricing for on-prem infrastructure deals versus 10%-30% off public cloud pricing.
I’ve seen 5-year TCO by Cloudian that is 70% less than standard cloud storage pricing. For those of you doing the math, yes, the cost is LESS than the lowest price from ‘instant access’ cloud storage from the hyperscalers.
Then there are egress fees. This is perhaps the most contentious aspect of cloud pricing. These charges kick in whenever you move data out of the cloud or use that data with external services. Want to analyze your cloud-stored data using a different provider’s AI tools? You’ll pay. Need to move data between clouds for redundancy? You’ll pay again. Planning to combine cloud data with on-premises datasets for comprehensive analytics? The meter keeps running.
Cloud providers talk about using a ‘cost plus’ model for charging their customers: you pay for the operating costs you incur. Seems fair, right? But that’s not the case in egress charges. What’s the cost to the cloud for egress? The network ‘in’ to the cloud is the very same one as the network ‘out’. We all know why the charges are there and we all know they don’t exist on premises.
The Sovereignty Imperative
The second most common reason to repatriate data from the cloud is data sovereignty. I like the word sovereignty. It encompasses a whole host of concerns. For example, when in the cloud, where precisely does your data reside? In some clouds you can’t specify the physical location. You can specify the ‘region’ or ‘to place it in one facility’ but NOT which facility. To my knowledge all such facilities that make up a region are in a single US state or specific country. Could your data get ‘spread’ outside your country? Or if it rides over a network that traverses a country you wish to avoid, how would you know? Is your data access subject to the governing laws of your country (where your business in registered) or where your data resides? Many unknowns. For those tasked with the stewardship of a company’s data, these may be unacceptable unknowns.
What is known is that cloud providers will turn over your data if faced with a court ordered subpoena. This assumes the rule of law is intact in the country in which your data resides. If not, anything goes. You need not argue about whether cloud storage has back doors, or a leaky multi-tenant system, or if your data is being accessed by a cloud service provider without your consent. These are all real concerns, but sometimes lack substance. It is known that Google reads your Gmail (Google Privacy Policy) but for security and spam risks.
Questions enterprises ask today:
- Where exactly is our data stored?
- Which country’s laws apply?
- If the hosting country issues a subpoena, do we get notified?
- Can our AI training data be accessed, scanned, or shared without our active approval?
If this makes you queasy, repatriation is the answer. Take charge of your data sovereignty and store your data on-premises.
Making the Move: Practical Repatriation
The technical challenge of moving massive datasets might seem insurmountable, but modern tools and standards have simplified the process considerably. Successful repatriation follows three fundamental principles.
First, leverage existing migration tools. Cloud providers, somewhat ironically, offer sophisticated utilities for moving data in and out of their platforms. AWS DataSync, for example, provides robust, well-tuned capabilities for large-scale data transfers. These tools are designed for efficiency and can significantly reduce migration complexity.
Second, embrace standard APIs. The most widely adopted standard for cloud storage is Amazon’s S3 API, which has become the de facto lingua franca of object storage. Even competing cloud providers support S3-compatible interfaces, and on-premises solutions like Cloudian HyperStore fully implement these APIs. This standardization means applications can transition seamlessly between environments with minimal code changes—often just endpoint URL modifications.
Third, address egress fees strategically. Many cloud providers now offer policies to waive egress charges for customers migrating away from their platforms. If these policies don’t apply to your situation, a brief return-on-investment analysis typically demonstrates that migration costs are quickly recovered through ongoing operational savings.
The most compelling aspect of modern repatriation is application compatibility. Once data moves to S3-compatible on-premises storage, existing applications can access it immediately. There’s no need for extensive refactoring or rewriting—the same APIs that worked in the cloud continue working on-premises.
Best practices
- Use native migration tools (e.g., AWS DataSync)
- Stick to S3-compatible storage for seamless app portability
- Negotiate waived egress fees—many providers offer them for departures
- Map workloads to cost/resilience tiers ahead of time
Regional Cloud Service Providers – Your Opportunity Awaits!
This trend creates significant opportunities for regional cloud service providers. Local cloud providers can offer the operational simplicity that enterprises value in public clouds while addressing cost and sovereignty concerns that global hyperscalers cannot match.
Regional providers are uniquely positioned to offer “repatriation as a service,” where migration costs are incorporated into new hosting contracts. With no application code changes required and simplified migration tools available, this represents a substantial market opportunity for providers willing to compete on value rather than scale alone.
Mission Possible!
Cloud repatriation isn’t about rejecting innovation—it’s about making strategic choices that align with long-term business objectives. The combination of substantial cost savings, enhanced data sovereignty, and simplified migration paths creates a compelling case for bringing data home.
The gravity of data is real, but it’s not insurmountable. With the right approach, tools, and partnerships, enterprises can successfully escape the gravitational pull of public clouds and establish data infrastructure that serves their specific needs rather than their vendors’ business models.
Peter Sjoberg, Vice President – Worldwide Solution Architects, Cloudian
