QuTS hero (ZFS) or QTS (ext4)?
The single biggest QNAP choice is the operating system. QuTS hero brings OpenZFS integrity, dedup and self-healing; QTS is lighter and cheaper. Here is how they trade off.
From desktop to all-flash rack
QTS desktop NAS
ext4 · SMBEntry to mid-range desktop NAS on QTS (Linux + ext4) — TS-264/464/664, TS-x73A. Snapshots, Plex, backup and personal-cloud apps for homes, creatives and small offices. Several models can switch to QuTS hero later.
QuTS hero NAS
ZFS · high-endZFS-based QuTS hero desktop/tower NAS — TVS-h674 (6-bay), TVS-h874 (8-bay), Intel Core. End-to-end checksums, inline data reduction and self-healing for business-critical data.
All-flash NAS
ZFS · NVMe/SSDHigh-density all-flash on QuTS hero — TS-h1077AFU (10-bay SATA SSD, AMD Ryzen PRO 7000, ECC DDR5) and TBS-h574TX (5-bay E1.S NVMe with Thunderbolt 4) for virtualisation, media and databases.
Rackmount NAS
ZFS · data centreShort-depth and full-depth rack NAS — e.g. TS-h1655XeU-RP (3U, 12×3.5" SATA + 4 E1.S/M.2 NVMe, 10GbE) on QuTS hero — for racks, branch sites and backup targets.
AI NAS
GPU-readyAI-focused NAS such as the TVS-AIh1688ATX — 12 SATA + 4 U.2 NVMe, up to 192GB DDR5 ECC, dual 10GbE and three PCIe Gen4 slots — for on-prem AI inference, virtualisation and edge workloads.
Indicative positioning across the QNAP range — confirmed to your spec on quote.
Integrity and flexibility in one NAS
QuTS hero = ZFS data integrity
QuTS hero runs OpenZFS, so every block is checksummed and self-healed against silent corruption, with inline deduplication and compression to stretch flash. It is the closest thing to enterprise-array data integrity in a NAS — size it with our ZFS calculator.
Two operating systems, your choice
Pick QTS (Linux + ext4) for the lightest, lowest-cost path, or QuTS hero (ZFS) for integrity, dedup and snapshots. Several QNAP models let you switch OS, so you are not locked into one decision on day one.
Hardware breadth no rival matches
QNAP spans Thunderbolt 4, PCIe Gen4 expansion, U.2 and E1.S NVMe, 10/25GbE and ECC DDR5 — from a desktop unit to a 3U rack array. If a workload needs a specific port or accelerator, there is usually a QNAP for it.
A deep app ecosystem
Virtualization Station and Container Station run VMs and Docker on the NAS; HBS 3 and Hyper Data Protector handle backup (including VMware/Hyper-V); QuObjects adds S3; QVR Pro/Elite turns it into an NVR. One box, many jobs.
Snapshots & ransomware resilience
Immutable, space-efficient snapshots (block-level on QuTS hero ZFS) plus WORM and air-gapped backup options give you a tested recovery point — not just a copy. We design the protection around your data, not the other way round.
UK supply, sizing & support
Servnet sizes the right QNAP model, drives and network for your workload, supplies it in the UK and supports it — and because we sell every NAS and array line, our advice on QNAP vs Synology vs an enterprise array is genuinely impartial.
QNAP NAS — common questions
What is the difference between QTS and QuTS hero?
They are QNAP’s two NAS operating systems. QTS runs on Linux with the ext4 file system — light, low-cost and feature-rich (snapshots, Plex, apps), used on entry and mid-range models. QuTS hero runs on Linux with OpenZFS, adding end-to-end checksums, self-healing, inline deduplication and compression — the choice for high-end, all-flash and business-critical NAS. Several models can switch between the two, but the drives must be reformatted as ZFS metadata differs from ext4.
Does QNAP QuTS hero use ZFS, and can I size it?
Yes — QuTS hero is built on OpenZFS, so it uses ZFS pools and RAIDZ-style parity with checksums, snapshots and data reduction. You can size usable capacity (including parity, slop and padding) with our free ZFS / RAIDZ calculator, then we confirm the exact model and drives.
Which QNAP NAS should I choose?
For a home or small office, a QTS desktop NAS (TS-264/464/664). For business-critical data wanting ZFS integrity, a QuTS hero model (TVS-h674/h874). For virtualisation, databases or media at speed, an all-flash unit (TS-h1077AFU, TBS-h574TX). For a rack or backup target, a rackmount TS-h. Tell us the workload and we’ll match the model, drives and network.
How much memory does QuTS hero (ZFS) need?
More than QTS — ZFS uses RAM for its cache (ARC) and integrity features, so QuTS hero models ship with more memory (often ECC) and benefit from upgrades on heavier workloads. We size the RAM to your dataset and features (dedup in particular) as part of the quote.
QNAP vs Synology — which is better?
QNAP leads on hardware breadth (Thunderbolt, PCIe, NVMe, 25GbE) and the ZFS-based QuTS hero OS; Synology leads on a tightly-integrated software ecosystem (DSM, Active Backup, SHR). The right choice depends on whether you value raw hardware flexibility and ZFS, or software simplicity. As we supply both, our comparison is impartial — see our Synology page.
Can Servnet supply and support QNAP in the UK?
Yes — we size the QNAP model, drives, memory and networking to your workload, supply it in the UK and support it alongside the rest of your estate. We also fit the right drives (CMR NAS/enterprise disks or SSDs) and configure the RAID/ZFS layout for resilience.
Size it, compare it, pick the drives
Which QNAP is right for you?
Tell us the workload and capacity — we’ll choose QTS or QuTS hero, the model, drives and network, compare it impartially against Synology and the alternatives, and quote it for the UK.
Industries Servnet supports with this stack
IT, storage, networking and cybersecurity for UK media, broadcast and post-production businesses — 4K fin…
IT, cybersecurity and managed services for UK retail and hospitality groups — multi-site POS estates, sto…
IT, cybersecurity and managed services for UK central and local government, police forces, blue light ser…
IT, cybersecurity and managed services for UK construction firms, engineering consultancies, architects a…
Compare QNAP NAS with other vendors
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