OSNEXUS QuantaStor

Web · Windows · Linux · Self-hosted · API

Freedom report

Two barsScore 5.0

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely3 of 6 device platforms
DocumentedThinly documented

OSNEXUS QuantaStor is ranked #17 of 21 in NAS software on Freedom251. It runs on API, Linux, Self-hosted, Web, Windows. There is a free plan. A free trial is offered.

OSNEXUS QuantaStor plans and pricing

All plans

Community Edition Free 80TB raw capacity · maximum 4 servers per storage grid · non-commercial, educational, and testing use osnexus.com · 5 Oct 2026

Trial Edition Free 45 days · 256TB raw capacity · Enterprise Edition features unlocked osnexus.com · 5 Oct 2026

Enterprise Edition Not published Request a quote; sold through distributors, managed hosting providers, OEMs, VARs, and system integrators osnexus.com · 5 Oct 2026

Compared on NAS software

Free plan: No
Storage pools: Yes
User management: Yes
Snapshots: Yes
Container support: Yes

Best OSNEXUS QuantaStor alternatives

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Two bars TrueNAS Free tier No. 1Free6.8 Two bars ZimaOS Free tier No. 2Free6.8 Two bars napp-it Free tier No. 3Free6.7 One bar DPlaneOS Free tier No. 4Free6.5 One bar NovaNAS Free tier No. 5Free6.5 One bar OpenNAS Free tier No. 6Free6.5

The record

Unified storage: QuantaStor provides scalable file, block, and object storage in a software-defined storage platform.
Storage architecture: It uses Ceph and OpenZFS and can scale up or out while managing storage in a single grid.
Management: Its web management interface and configuration workflow are designed to simplify storage setup for IT generalists.
Automation: Storage Grid servers can be managed and automated through CLI and REST APIs.
Deployment formats: QuantaStor is offered as ISO installation media for bare-metal or virtual-machine installation and as a VMware OVA virtual storage appliance.
Integration SDK: The Cloud Integration SDK supports automated provisioning, storage cloud management, auditing, and other tasks through RESTful APIs.
Security: OSNexus describes QuantaStor as providing data protection on the wire and at rest for enterprise and cloud storage deployments.
Ceph security features: The vendor lists AES-256 encryption, S3 Object Lock, MFA, and RBAC among QuantaStor security capabilities for Ceph users.
Alerts and monitoring: The Ceph page lists real-time alerts through email, Slack, SNMP, and other channels, and hardware monitoring for thermals, power, fans, and disk health.
Support: OSNexus lists support contact by phone and email and says it sells QuantaStor through partners including distributors, OEMs, VARs, and system integrators.
Intended users: OSNexus says QuantaStor serves industries including healthcare, energy, media and entertainment, transportation, higher education, nonprofits, and government.
Company: OSNexus says it was founded in 2010 and lists its address in Bellevue, Washington.
Founded: 2010
Headquarters: Bellevue, Washington, USA
Price from: Free

Where it ranks on Freedom251

Best NAS Software in 2026#17 of 21

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Sources

osnexus.com/products/software-defined-storage· checked 5 Oct 2026
osnexus.com/downloads-content· checked 5 Oct 2026
osnexus.com/ceph-and-quantastor· checked 5 Oct 2026
osnexus.com/about· checked 5 Oct 2026
osnexus.com/quantastor· checked 28 Sept 2026