Storage market 2026: the four trends that actually stuck this year

2026 was not a year of big surprises in enterprise storage — it was a year of quiet consolidation. Themes that still felt niche in 2024 and 2025 moved into the mainstream, while a few supposedly safe bets lost momentum. From the perspective of a systems house that advises on triple-digit storage projects every year, four themes have genuinely stuck in 2026.

This year-end review places those four in context — no marketing prose, no vendor bashing, with concrete input for 2027 planning.

Trend 1: NVMe/TCP has gone mainstream

Two years ago, NVMe over Fabrics was still considered a hyperscaler and very-large-enterprise topic. Fibre Channel was the standard answer for block storage in the mid-market; iSCSI the cheap compromise. In 2026 the picture has shifted clearly: NVMe/TCP has become the default in upper-mid-market projects as soon as VM latency or database IOPS enter the conversation.

Why the breakthrough happened now

Three factors came together. First, driver and hypervisor support has matured — Proxmox VE, VMware vSphere and mainstream Linux distributions now handle NVMe/TCP initiators as routinely as iSCSI did a decade ago. Second, switch vendors have moved 25 GbE and 100 GbE ports into price ranges where Fibre Channel SAN hardware is hard to justify. And third — the key point — the storage side has caught up: with the official release of the TrueNAS Proxmox plugin including NVMe/TCP support, mid-market customers now have a certified, documented path without the complexity of a classic SAN.

What that means in practice

The default question in advisory calls has shifted. Instead of “Fibre Channel or iSCSI”, the discussion today is “25 GbE NVMe/TCP or 100 GbE NVMe/TCP” — and whether a dedicated storage fabric is required or converged networking is enough. The honest answer depends on the workload: for standard SMB virtualization, a cleanly configured 25 GbE network with proper QoS is usually sufficient; for transactional database workloads or VDI with many concurrent users, a dedicated storage fabric still pays off. The background and when each option makes sense is laid out in the comparison NVMe/TCP vs. FC vs. iSCSI.

Trend 2: Immutable backups are no longer an add-on

What was still “nice to have” in 2024 has in 2026 fallen below the discussion threshold. No backup concept signed off in 2026 was without an immutable layer. The drivers were less the vendors and more the insurers and the regulatory side — specifically the NIS2 rollout and the now-established practice of cyber insurers requiring immutable backups as a baseline for policies.

How implementations have evolved

The key shift: immutability today happens at multiple layers simultaneously, not just at the backup target. In active projects we routinely see three layers:

• ZFS snapshots with retention locks on the primary storage side, as a first line of defence against encryption attacks on active data.
• Object lock on S3-compatible backup targets — on TrueNAS using native S3 compliance combined with Veeam or Proxmox Backup Server. The Veeam path is documented in detail in TrueNAS immutable backup with Veeam and object lock.
• Air-gapped offsite copies, typically as ZFS replication to a second TrueNAS site with time-delayed release.

The 3-2-1-1-0 formula, which we have written about for a while, has in 2026 moved from a compliance construct to operational baseline. The advisory situation has shifted accordingly: customers no longer ask whether immutability is needed, they ask how it is implemented most robustly.

Trend 3: Hyperscalers are losing workloads back to on-premise

The most visible trend of 2026 — and the one many analysts got wrong for 2024 and 2025. Cloud repatriation, meaning the move of workloads from hyperscalers back to on-premise or local hosters, has become a serious mid-market advisory topic.

Why the numbers are tipping now

The main driver is neither ideology nor data protection — it is the five-year TCO calculation. For stable, predictable workloads — and most mid-market companies have more of those than they admit — a self-operated TrueNAS-based storage platform regularly comes out cheaper than the equivalent hyperscaler booking. The calculations are backed up with concrete numbers in storage costs cloud vs. TrueNAS — a TCO comparison.

Two additional points weigh more heavily in 2026 than in previous years:

• Egress costs hit data-intensive workloads in full and are not negotiable. Anyone pulling backups, analytics exports or media assets out of the cloud regularly pays a silent recurring tax.
• Price stability is far more predictable with on-premise hardware than with hyperscaler bookings, whose list prices have moved upwards several times per year.

What repatriation looks like in practice

Rarely a full exit. The projects we have advised on in 2026 are differentiated: backups, file shares, VM storage and archival data move back to self-operated TrueNAS systems, while SaaS applications (Microsoft 365, Salesforce, specialised industry software) stay in the cloud. A straight read on when the return path pays off is in cloud repatriation — when going back on-premise makes sense.

What stands out is that the decision today is discussed far less emotionally than in 2023. Hyperscalers are no longer dogma, but also no longer villains. It has become sober workload allocation.

Trend 4: TrueNAS 27 and the end of the YY.MM scheme

The fourth trend is narrower but has signalling value for the entire open-source storage ecosystem. iXsystems has, in mid-October, renamed the version previously developed as TrueNAS 26 to TrueNAS 27 — not for technical reasons, but to align the version number with the primary year of operational use. The full context is in TrueNAS 27 instead of 26 — what the renaming means for planning and upgrade paths.

Why this is more than cosmetics

With TrueNAS 27, iXsystems is leaving behind the familiar year-month scheme (25.10 Goldeye, 25.04, 24.10 Dragonfish and so on). Dot releases will from now on be numbered sequentially without being tied to a calendar month. For admins this has two consequences:

• Release planning becomes easier to communicate, but less precise in time. Anyone who used to infer the approximate release date from the version number now has to rely on changelogs and roadmap posts.
• The technical base is unchanged: Linux kernel 6.18, OpenZFS 2.4, with the migration from BSD-based TrueNAS CORE to the Linux line finally completed in 2026.

TrueNAS 25.10 Goldeye remains the recommended stable release for production environments until TrueNAS 27 ships in early December 2026. TrueNAS 27 GA is then expected in December; we assume the first production deployments at DATAZONE customer sites will start in Q1 2027, after the usual observation period across the first point releases.

What that means for 2027 planning

For projects planned before the December release we continue to recommend TrueNAS 25.10 Goldeye. On the hardware side, the current M30 and M40 systems of the TrueNAS Enterprise line are the relevant platforms. The EOL M50 and M60 should no longer be scoped into new projects — the TrueNAS configurator points directly at the current models.

What did not happen in 2026

An honest review also names what did not materialise. Three topics that were marketed as “safe trends” at the start of the year turned out noticeably quieter than expected:

• AI-driven tiering as a default feature on primary storage: did not land in the mid-market, remains a hyperscaler and very-large-enterprise topic.
• Data-centre consolidation via edge storage: much discussed, rarely requested in actual projects. The mid-market stays with central storage concepts and clean replication.
• “Software-defined everything” as the answer to storage complexity: established in large environments, still a case-by-case topic in the mid-market. ZFS-based solutions with clear appliance boundaries remain the more pragmatic choice.

Outlook and what we take from this into 2027

The four trends — NVMe/TCP, immutable backups, cloud repatriation and the new TrueNAS versioning scheme — all point to the same thing for 2027 planning: more pragmatism, less hype. Mid-market storage decisions in 2027 will more often be made along TCO calculations, compliance requirements and workload fit than along vendor narratives.

Anyone planning a new storage project in 2027 should treat the four trends as checkpoints: is NVMe/TCP factored into the network design? Is immutability implemented at all three layers (primary, backup, offsite)? Does cloud repatriation make sense for the specific workloads? And is the TrueNAS version stable at the time of the project?

For concrete questions on a project or a migration, the direct path is the most reliable one — our TrueNAS support and IT service team help with sizing and planning without sales pressure.

FAQ on the storage market 2026

Is NVMe/TCP really the default recommendation for new projects?

For new block storage projects in the upper mid-market, NVMe/TCP is the obvious choice in 2026 if the network supports at least 25 GbE and the hypervisor side (Proxmox, VMware) is kept current. For very small environments, iSCSI remains a working and simple alternative; for specific cases with existing Fibre Channel infrastructure, migration is not mandatory but is a medium- to long-term topic.

Is a ZFS snapshot sufficient as an immutable backup?

No. ZFS snapshots are the first line of defence and important, but they are not a full replacement for a separated backup target with object lock or air gap. The 3-2-1-1-0 formula deliberately requires multiple media and at least one offline or immutable copy — anyone covering that only with snapshots has a fragile element in the concept.

Is cloud repatriation worthwhile for every company?

No, and this is the key point. Repatriation pays off where workloads are stable, predictable and data-intensive. For project-driven workloads with fluctuating load, high innovation pressure or heavy SaaS integration, the cloud remains the better choice. The decision is individual and depends on a clean TCO calculation over three to five years.

Should I still deploy TrueNAS 25.10 Goldeye today or wait for TrueNAS 27?

For projects going into production before Q2 2027, TrueNAS 25.10 Goldeye is the clear recommendation — it is the current stable release with full support. TrueNAS 27 GA ships in early December 2026; the first point releases (27.0.1 onwards) are typically the better choice for production environments from the second or third point release onwards, after the usual observation period.

Which TrueNAS hardware is currently recommended?

The M30 and M40 series of the TrueNAS Enterprise appliances are the current platforms; M50 and M60 are EOL and should no longer be scoped into new projects. For the mid-market, the smaller Enterprise models or specifically configured Mini variants are often sufficient — the exact sizing is best made visible through the configurator.

What is the most important consequence from the four trends for 2027 planning?

That storage decisions in 2027 should be made even more consistently along measurable criteria: network design (NVMe/TCP ready), backup concept (immutable at all layers), TCO comparison (cloud vs. on-premise for the specific workload), release state (Goldeye today, TrueNAS 27 from Q2 2027). Marketing narratives have gone noticeably quieter in 2026 — the sober calculation wins.