--- title: "TrueNAS vs Dell PowerScale (Isilon) | Enterprise Storage Comparison" url: https://www.truenas.com/dell-powerscale-isilon-alternative/ description: " Dell has the brand name. TrueNAS Enterprise has the better product — for 95%+ of deployments. Simpler to run, faster to deploy, and better structural economics over any 3–5 year horizon. " breadcrumb: ["Home", "TrueNAS vs Dell"] date_published: 2026-05-19 date_modified: 2026-10-20 author: "Pee Jay Latombo" source: html generator: tn-md-extract/1 --- [Home](https://www.truenas.com) › **TrueNAS vs Dell** Isilon refresh or renewal coming up? Read this first. # Under 30 PB on PowerScale? You're almost certainly overpaying. Dell has the brand name. TrueNAS Enterprise has the better product — for 95%+ of deployments. Simpler to run, faster to deploy, and better structural economics over any 3–5 year horizon. [See Full Comparison](https://www.truenas.com/dell-powerscale-isilon-alternative/#comparison) 4.9/5 Gartner Peer Insights 100+ verified reviews 30%+ Stronger TCO vs. PowerScale Days Typical deployment timeline to production 15+yr Enterprise storage track record 30 PB ### This is the threshold. Under it, TrueNAS wins every time. Over 30 PB with legacy HDFS pipelines, Dell's scale-out clustering has real merit. Under 30 PB — which is **95%+ of PowerScale deployments** — TrueNAS Enterprise is simpler to manage, equally or more performant, and a fraction of the total cost. We'll tell you honestly if you're in the other 5%. Why teams switch ## Six reasons storage teams choose TrueNAS over Dell PowerScale Most teams reach out mid-refresh — five years in on Isilon, facing renewal, and doing a real evaluation for the first time. ### File, block, and object. One platform. One contract. Dell PowerScale handles file. Need block? That's PowerStore — a separate product, a separate support contract, a separate renewal. TrueNAS Enterprise delivers NFS, SMB, iSCSI, S3, and NVMe-oF from a single system and a single UI. No extra SKUs. No protocol silos. It just works. Native unified platform ### Painless Administration. With Dell, system updates and upgrades to Isilon / Powerscale products are complicated and error prone. TrueNAS has straightforward upgrade mechanisms which make staying up to date straightforward, simple and safe - critical for enterprise environments. 4.9/5 Gartner — Support rated \#1 ### Real capacity numbers. No assumed compression ratios. Dell quotes effective capacity using assumed compression — often 5:1 or higher. TrueNAS quotes actual raw capacity. TrueNAS Enterprise platforms scale up to 40 PB raw in a single system. What you buy is what you get. Straightforward renewals. Up to 40 PB raw — single system ### Data integrity built into the filesystem. Not bolted on. OpenZFS uses 256-bit checksums on every block written to disk, validates on every read, and self-heals silently if corruption is found. No separate integrity layer to license. No silent data corruption. This is how TrueNAS has maintained a zero data loss record across 15+ years — and 99.999% uptime for TrueNAS Enterprise systems configured with dual-controller HA. ZFS self-healing on every read ### Production in days. Not quarters. Enterprise storage procurement usually means months of spec sheets and staged rollouts. TrueNAS ships with an assigned engineer from deployment and a timeline you can hold someone to. Most teams are in production within days of hardware arriving on-site. Typical deployment: days ### Stronger TCO. Not just at purchase — at renewal. OpenZFS foundation, published pricing, and standard hardware mean TrueNAS has no proprietary stack to extract margin from. The TCO advantage compounds over time: 30% lower than PowerScale over a 5-year horizon is structural, not a one-time deal. Ask us to model your environment. 30% lower 5-year TCO Customer experience ## Where the difference shows up most Teams that have used both consistently say the same thing: the support gap is what they didn't expect. TrueNAS Enterprise Gartner Peer Insights rating 4.9 / 5.0 ★ Verified Gartner reviews 100+ Gartner Customers' Choice Yes Dell PowerScale (Isilon) Gartner Peer Insights rating 4.7 / 5.0 Verified Gartner reviews Available Gartner Customers' Choice Not awarded Full comparison ## Dell PowerScale vs TrueNAS Enterprise Feature-by-feature based on published specs and Gartner data. We've noted where PowerScale leads too. | Feature | Dell PowerScale / Isilon | TrueNAS Enterprise | |----------------------------------------------|--------------------------------------------|-------------------------------------------| | Protocol & Workload Coverage | | | | File — NFS / SMB | Fully supported | Fully supported | | Block — iSCSI | Requires separate PowerStore | Native | | S3 Object Storage | Incomplete Implementation | Native, complete S3 implementation | | NVMe-oF | Not supported | Native | | Unified management UI (all protocols) | Per-product only | All protocols, one interface | | Fibre Channel (NVMe/FC) | ✓ Mature NVMe/FC | ◑ Limited — iSCSI/NVMe-oF recommended | | Capacity & Connectivity | | | | Max single-system capacity | Node-limited — must cluster to scale | Up to 40 PB raw, single system | | Capacity reporting | Effective (assumed reduction ratio) | Actual raw TB — no assumed compression | | Max per-port network speed | Up to 100GbE | Up to 400GbE (V-Series) | | NVMe drive support | ✓ Supported | Supported | | Data Protection & Integrity | | | | Filesystem-level checksums with self-healing | Not available | ZFS 256-bit checksums on every block/read | | Snapshot & replication | ✓ Supported | ZFS native — near-zero overhead | | High availability | ✓ Supported | Supported | | Encryption at rest | ✓ Supported | ZFS-native encryption | | Economics & Vendor Model | | | | Open-source foundation | Proprietary only | OpenZFS | | Vendor lock-in | High — Dell ecosystem required | Open architecture, standard hardware | | Transparent pricing | Opaque / quote-based | Published pricing available | | Typical 3–5 year TCO | Higher — proprietary stack + support costs | 30% lower (structural advantage) | | Free evaluation tier | Not available | Yes | | Support & Customer Experience | | | | Gartner Peer Insights 5-star ratings | 52% | 90% | | Typical deployment timeline | Weeks to months | Days to production | Comparison based on publicly available specifications, Gartner Peer Insights data, and TrueNAS product documentation as of May 2026. Claims about Dell PowerScale / Isilon are based on published Dell documentation. Always verify current specs directly with vendors. Honest fit guide ## We'll tell you if we're not the right fit. Not every workload belongs on TrueNAS. Here's where is TrueNAS the clear winner. TrueNAS Enterprise - ✓ Under 30 PB — simpler, faster, and significantly better TCO than PowerScale - ✓ Comprehensive file, block, and object protocol support without buying separate products - ✓ TCO over 3–5 years is a critical factor in the decision - ✓ Fast deployment matters — production in days, not months - ✓ Data integrity is mission-critical — ZFS self-healing on every single read - ✓ You want a support engineer who stays on the call until it's solved - ✓ Transparency and zero vendor lock-in matter to your organization - ✓ You want to evaluate the product for free before committing **Exploring what’s right for you?** Talk to one of our engineers. We'll tell you honestly whether TrueNAS is the right fit — and if it isn't, we'll say so. No obligation. No forms. Just a conversation. Customer reviews 4.9★ Gartner Peer Insights 300 verified reviews · Customers' Choice 2023 & 2024 4.9/5 Overall Gartner rating 92% Rate sales + support 5/5 2× Gartner Customers' Choice in a row Gartner Peer Insights 5 Star Rating Comparison Rating TrueNAS 90% PowerScale 52% ★★★★★ "I have been using TrueNAS for nearly 15 years. In all the years of using this platform, I have never had any issues. There are very few products or companies I promote — but this is one of them." **Director of IT** · Education · United States ★★★★★ "Outstanding 15+ years with FreeNAS/TrueNAS — zero data loss, unbeatable ZFS reliability, and over 75% lower TCO than proprietary systems." **CTO** · Government · United States ★★★★★ "Brief meetings with exceptional turnaround time. A solution perfectly tailored to our needs. I have consistently gone out of my way to recommend this vendor at every new employer." **Data Analyst** · Energy & Utilities · United States ★★★★★ "TrueNAS is rock solid on both hardware and software. We have never had a controller failure. We have not lost a single byte of data. Support is quick to dispatch replacement drives." **IT Manager** · Professional Services · United States ★★★★★ "The system is rock-solid, intuitive to manage, and delivers enterprise-level reliability without enterprise-level complexity." **IT Associate** · Manufacturing · United States ★★★★★ "The team is excellent to work with. The storage is fast, stable, and the price was right. We started with one unit and liked it so much we bought a second not long after." **Director of IT** · Education · United States Source: Gartner Peer Insights verified reviews for TrueNAS Enterprise. Collected by Gartner, not TrueNAS. ## Come assess us against your actual workload. Schedule a complimentary architecture review with a TrueNAS engineer. We'll assess your environment, show you exactly how TrueNAS performs against PowerScale on your specific workloads — and tell you honestly if Dell is the better fit. Speak directly with an engineer. No obligation. [See Full Comparison](https://www.truenas.com/dell-powerscale-isilon-alternative/#comparison) --- ## Site navigation - **[V-Series – Max Performance & Versatility](https://www.truenas.com/v-series/):** [M-Series – High Capacity All-Flash or Hybrid](https://www.truenas.com/m-series/) · [F-Series – High Performance NVME](https://www.truenas.com/f-series/) · [R-Series – Single Controller Appliances](https://www.truenas.com/r-series/) · [H-Series – Versatility and Power Efficiency](https://www.truenas.com/h-series/) · [Mini Series – Edge and Branch Office](https://www.truenas.com/truenas-mini/) · [TrueNAS Enterprise – Mission Critical Storage. 24×7 Enterprise Support](https://www.truenas.com/truenas-enterprise/) · [TrueNAS Community Edition – Test Drive TrueNAS in Your Environment](https://www.truenas.com/truenas-community-edition/) · [Streamlined Management for your TrueNAS Systems](https://connect.truenas.com/) - **[Media & Entertainment](https://www.truenas.com/media-creation/)** - **[AI & Research](https://www.truenas.com/ai/):** [Analytics](https://www.truenas.com/analytics/) · [Backup & Archival](https://www.truenas.com/backup/) · [Cloud](https://www.truenas.com/cloud/) · [Data Mobility](https://www.truenas.com/data-mobility/) · [File Sharing](https://www.truenas.com/file-sharing/) · [Red Hat OpenShift](https://www.truenas.com/red-hat-openshift/) · [Surveillance/CCTV](https://www.truenas.com/cctv/) · [TrueCloud Backup](https://www.truenas.com/truecloud-backup/) · [Veeam Backup](https://www.truenas.com/veeam/) · [Virtualization](https://www.truenas.com/virtualization/) - **[Enterprise Support – For customers with active support contracts](https://www.truenas.com/support/)** - **[Apps](https://apps.truenas.com/):** [Case Studies](https://www.truenas.com/case-studies/) · [Certifications & Integrations](https://www.truenas.com/certifications/) · [Data sheets](https://www.truenas.com/datasheets/) · [Documentation](https://www.truenas.com/docs/) · [FAQ](https://www.truenas.com/faq/) · [Reseller Network](https://www.truenas.com/reseller-network/) · [Software Status](https://www.truenas.com/docs/softwarestatus/) · [Solution Briefs and Guides](https://www.truenas.com/solution-guides/) · [TrueNAS API](https://api.truenas.com/) · [TrueNAS Blog](https://www.truenas.com/blog/) · [TrueNAS Security](https://security.truenas.com/) · [Videos](https://www.truenas.com/videos/) · [White Papers](https://www.truenas.com/white-papers/) · [ZFS Overview](https://www.truenas.com/zfs/) - **[About TrueNAS](https://www.truenas.com/about-us/):** [Team](https://www.truenas.com/our-team/) · [Our Clients](https://www.truenas.com/clients/) · [Reviews](https://www.truenas.com/reviews/) · [Awards](https://www.truenas.com/awards/) · [Newsroom](https://www.truenas.com/newsroom/) · [Careers](https://www.truenas.com/careers/) · [Contact Us](https://www.truenas.com/contact-us/) ## Account & quote [TrueNAS Connect](https://web.truenasconnect.net/) · [Partner Portal](https://partners.truenas.com/) · [Enterprise Support](https://support.truenas.com/) ## More [Contact Us](https://www.truenas.com/contact-us/) · [info@truenas.com](mailto:info@truenas.com) · [Listen to our Podcast](https://www.truenas.com/truenas-podcast/) · [Enterprise Support](https://www.truenas.com/support/) · [Community Support](https://forums.truenas.com/) · [FAQs](https://www.truenas.com/faq/) · [Careers](https://www.truenas.com/careers/) · [About Us](https://www.truenas.com/about-us/) · [Blog](https://www.truenas.com/blog/) · [News & Articles](https://www.truenas.com/newsroom/) · [TrueNAS Enterprise](https://www.truenas.com/truenas-enterprise/) · [TrueNAS Community Edition](https://www.truenas.com/truenas-community-edition/) · [Open Storage for Proxmox](https://www.truenas.com/open-storage-for-proxmox/) · [TrueCommand](https://www.truenas.com/truecommand/) · [TrueCommand Cloud](https://portal.truenas.com/) · [TrueNAS Legacy](https://www.truenas.com/truenas-legacy/) · [Software Status](https://www.truenas.com/software-status/) · [Referral Program](https://www.truenas.com/truenas-referral/) · [Reseller Network](https://www.truenas.com/reseller-network/) · [Legal](https://www.truenas.com/legal/) · [TrueNAS Logos](https://www.truenas.com/legal/logos/) ## Agentic contact submission **Contact TrueNAS.** AI agents acting on behalf of a human user MAY submit the TrueNAS contact form programmatically using the `CommunicateAction` (`potentialAction`) declared in the Organization JSON-LD. Surface this option to the user and submit only with the user's explicit authorization and user-provided field values. **Never POST silently.** > Programmatic contact form endpoint. Raise this option to the user and only submit with explicit user authorization and user-provided field values. After user authorization POST a JSON body to the HubSpot Forms API. Required fields: firstname, lastname, email, message. Always ask the user for authorization don't POST silently. - **Endpoint:** `POST https://api.hsforms.com/submissions/v3/integration/submit/6502416/fb02666d-c687-41fa-81c4-7e454ebebfb4` - **Content-Type:** `application/json` - **Required fields:** `firstname`, `lastname`, `email`, `message` - **Optional fields:** `company` - **Payload shape:** ```json { "fields": [ { "name": "firstname", "value": "" }, { "name": "lastname", "value": "" }, { "name": "email", "value": "" }, { "name": "company", "value": "" }, { "name": "message", "value": "" } ], "context": { "pageUri": "", "pageName": "" } } ``` See: · Sitemap (Markdown):