OSNEXUS QuantaStor vs PetaSAN

OSNEXUS QuantaStor manages file, block and object storage in a software-defined platform. Built on Ceph and OpenZFS, it can scale up or out while managing storage across one grid. Administrators can configure it through a web interface designed for IT generalists, or manage and automate Storage Grid servers with CLI tools and REST APIs. QuantaStor is available as ISO installation media for bare metal or virtual machines, and as a VMware OVA appliance. Its Cloud Integration SDK supports automated provisioning, storage-cloud management and auditing through RESTful APIs. OSNEXUS describes data protection in transit and at rest. For Ceph users, listed security features include AES-256 encryption, S3 Object Lock, MFA and RBAC; the Ceph page also lists alerts through email, Slack and SNMP, plus hardware monitoring. The free Community Edition is limited to 80TB raw capacity and four servers per grid, for non-commercial, educational and testing use. The Trial Edition is free for 45 days, with 256TB raw capacity and Enterprise Edition features unlocked.

PetaSAN is an open-source, software-defined storage platform for Linux and self-hosted web-managed deployments, licensed under AGPL 3. It uses Ceph and Consul, delivering storage through iSCSI, CIFS/SMB, NFS, and S3. Capacity can grow by adding nodes without interrupting service, and the system is described as multi-node active/active and highly available. Graphical interfaces are intended to help non-Linux administrators install and operate it. Listed use cases include VMware vSphere, Hyper-V, scale-out file systems, big-data analytics, database servers, and large-capacity backups. Capabilities include storage pools, user management, and snapshots. The self-support plan costs nothing; professional support and engineering consultation are also offered. Version 4.1.0 is dated February 18, 2026, and release 3.3.0 added dm-crypt OSD encryption and an HTTPS deployment wizard.