
XOSTOR
Hyperconvergence solution for your virtual infrastructure, XOSTOR is based on DRBD technology and allows you to create a powerful virtual SAN in order to mutualize the storage spaces of your servers.
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High availability enabler
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Open solution for HCI
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Reduce IT costs
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Scale as you need
Unlock the true potential of your servers
With XOSTOR, turn your local server disks into a high-performance virtual SAN. Use your SSDs or HDDs to create an HCI (hyper-converged infrastructure) and secure it with data replication.

Turnkey deployment,
user friendly management
Designed to be deployed in a few click directly from you Xen Orchestra Appliance, your HCI will be ready in
a
few clicks with XOSTOR.
With Xen Orchestra as a central management point to manage your cluster administering and controlling your
nodes
has never been easier. Monitoring, replace faulty node, scale resources in and out, everything is accessible
directly from your Xen Orchestra Appliance.
Scale at your own pace
Add (or remove) XOSTOR nodes as your needs grow and evolve. XOSTOR is designed for flexibility and scalability.
XOSTOR SR capacity calculator
This calculator helps determine your available storage capacity using a simple formula:
SR Capacity = (Smallest Disk Size × Number of Hosts) ÷ Replication Count
Important considerations:
- You must have at least 3 hosts to form a XOSTOR cluster.
- The maximum number of hosts supported in a single cluster is 7.
- The maximum size of any single Virtual Disk Image (VDI) will always be limited by the smallest disk in your cluster.
This calculator helps you quickly determine the appropriate XOSTOR storage capacity for your virtualization needs.
For example, if you have 3 hosts each with 200 GiB disks and set replication to 2, your total available storage (SR capacity) would be 300 GiB.
The power of open-source with
enterprise level support
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No license
use anytime, anywhere
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Active community
support each other, achieve together
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Github repository
report and contribute
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Professional team
full time employed developers
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24/7 support
full time employed engineers

It all started with XCP-ng
XCP-ng is the hypervisor layer of your infrastructure, the first thing you need to install on your server.
XOSTOR DevBlog
XOSTOR is the result of a long cooperation with LINBIT, the company behind the DRBD project. Find out more about the development of XOSTOR.