The Newest NAND Isn’t Always the Right NAND
In industrial storage, progress is not simply a matter of moving from one NAND generation to the next. It is about finding the right balance between longevity, cost, endurance, performance and the risk that comes with change.
The flash industry moves quickly. New NAND generations bring higher densities, new architectures and impressive specifications. For many markets, that pace of innovation is exactly what drives progress.
Industrial applications operate on a different timeline.
A storage device inside an industrial PC, railway system, medical device or edge gateway may remain part of the same platform for many years. By the time a new NAND generation becomes available, the system around the existing storage device may already have gone through extensive validation and years of field use. Replacing one component is therefore rarely just a matter of choosing a newer part. Firmware dependencies, environmental requirements, endurance characteristics and qualification effort all have to be considered.
That changes the question. Instead of asking, “What is the newest NAND available?”, we should be asking, “What is the right storage platform for the next phase of this product?”
The right storage technology is not necessarily the newest one. It is the one that remains reliable, supportable and appropriate for the system.
Maturity can be a feature
Industrial storage lives in the tension between two very different cycles: NAND technology continues to evolve rapidly, while industrial systems are designed for stability and long product lifecycles.
A product based on SLC, MLC or an earlier generation of 3D NAND may still perform exactly as intended. But semiconductor technologies cannot remain available indefinitely, so at some point migration becomes necessary.
The obvious response might be to move directly to the latest NAND generation. Yet “newest” does not automatically mean “best fit.” A transition can affect controllers, firmware, performance, power consumption, endurance and qualification requirements. For an already validated system, introducing more change than necessary can add risk rather than reduce it.
In that sense, maturity can be a feature.
This is also how I would look at the role of BiCS5 in industrial storage. Its value is not that it represents the newest NAND technology available. Its relevance lies in providing a practical bridge between established industrial designs and a more current 3D NAND platform.
With our BiCS5 portfolio at Swissbit, the goal is to support migration from SLC, MLC and BiCS3-based products while keeping redesign and requalification effort manageable. Because in industrial storage, NAND itself is only part of the equation. What matters is how well the complete storage solution fits an existing system, behaves predictably and can be supported over the required lifecycle.
Migration should be part of the design strategy
Storage migration is still often treated as an end-of-life issue: something to address when an existing component is discontinued.
A better approach is to consider migration capability as part of the system architecture from the beginning. Can a future storage generation fit into the existing design? Can interfaces and form factors remain unchanged? How much qualification work will have to be repeated?
These questions are particularly relevant for lower-capacity industrial applications. The NAND market naturally moves toward higher densities, but an embedded boot drive, HMI or control system may not need more capacity simply because the underlying technology has advanced.
More capacity is only an advantage when the application can actually use it.
That is one reason the BiCS5 portfolio is being extended across established interfaces such as SATA, CFast, CompactFlash and USB. Single-channel architectures also help support applications where lower capacities and cost efficiency remain important.
None of this may sound as spectacular as the headline specifications of a brand-new NAND generation. For an engineer responsible for keeping a platform available and supportable for years, however, it can be considerably more valuable.
The right endurance, not the maximum endurance
The same principle applies to endurance. Industrial workloads differ widely. A data logger writing continuously under demanding conditions has very different requirements from an embedded boot drive with relatively few writes.
The useful question is therefore not, “Which NAND offers the highest endurance?” It is, “How much endurance does this workload actually require?”
Options such as pSLC make that trade-off more flexible. Within Swissbit’s BiCS5 portfolio, optional pSLC mode can increase endurance for write-intensive applications, while other configurations can prioritize capacity and cost efficiency.
The goal is not maximum endurance everywhere. It is the right endurance where it is actually needed.
Progress without starting again
Industrial storage is diverse by nature. One system may still rely on CompactFlash, another on CFast, while newer designs use SATA SSDs or M.2. These systems will not all modernize at the same pace, nor should they have to.
A meaningful technology transition therefore cannot consist of introducing one new flagship product and expecting every application to follow. It requires migration paths that acknowledge the installed base and allow different systems to move forward on their own timelines.
And perhaps that points to a broader definition of innovation in industrial technology.
We often associate progress with the newest architecture, the highest density or the most impressive specification. But in long-life industrial systems, innovation can also mean making technological change easier to absorb.
A mature NAND platform, combined with industrial-grade firmware, lifecycle management and a carefully considered migration strategy, may ultimately deliver more value than simply chasing the next generation.
Because for industrial systems, progress does not always mean starting again. Sometimes, it means moving forward without unnecessary disruption.
Lisa is Product Manager for the SATA and CFast product lines at Swissbit. She joined Swissbit in September 2025 and is responsible for the definition, development, marketing, and lifecycle management of these industrial storage solutions. Before joining Swissbit, Lisa worked as a Product Manager at Phoenix Contact, where she gained several years of experience driving products from initial concept to successful market launch with a strong, market‑oriented lifecycle approach.
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