Infrastructure migrations have a reputation for going badly. Planned maintenance windows overrun, customers notice performance issues nobody anticipated, and the operational disruption that providers promised would be minimal turns out to be anything but. BlackBox Hosting’s migration to Everpure’s all-flash storage platform is worth examining precisely because it avoided all of that, moving thousands of customers across to entirely new storage infrastructure without a single minute of downtime for anyone on the platform.
BlackBox, a London-based private cloud provider, initiated the migration after its previous storage infrastructure reached end-of-life. Rather than patching around aging hardware, the company replaced more than 1.5 racks of disk-based systems with just 6U of flash storage, starting with two Everpure FlashArray//X50 solutions and later expanding with a third high-performance FlashArray//X50 and two FlashArray//RC20 systems for cost-efficient file storage. Everpure, previously known as Pure Storage before rebranding in February 2026, supplied both the hardware and the non-disruptive upgrade path that made the migration operationally viable at scale.
The results across multiple dimensions are striking. Performance improved by 12 percent, which matters for a provider positioning itself around sovereign cloud services where reliability and speed directly affect customer confidence. More unexpectedly, the physical footprint shrank by 87 percent, and CO2 emissions dropped by 85 percent. That combination of performance gain and environmental reduction through a single infrastructure decision is the kind of outcome that rarely arrives together without trade-offs.
Matthew Burden, founder and managing director of BlackBox Hosting, pointed to the broader context driving this investment, noting that UK demand for sovereign cloud solutions is rising sharply and that the company needs infrastructure that scales with that demand without introducing operational friction. Everpure’s Evergreen//Forever subscription model covers future upgrades without disruption, which removes the recurring risk of another end-of-life migration further down the road.
Paddy Fitzpatrick, Everpure’s VP and general manager for UK and Ireland, described the risks of inaction on data sovereignty plainly, citing service disruption, regulatory penalties, and reputational damage as the practical consequences driving UK businesses toward providers that can credibly address those concerns.
For a private cloud market where sovereign hosting is becoming a procurement requirement rather than a differentiator, the infrastructure decisions providers make now will shape how credibly they can serve that demand over the next several years.
