This is a list of the most frequently asked questions.


How do I install the software?

We provide an installable ISO image. You will need to burn the image to CD, DVD or USB pen drive.

See the Hardware Support page for details on the minimum system requirements.

See the Download page to download the ISO image.

See the Bootable USB Guide page for details on how to burn the image.

See the Installation Guide page for details on how to install.

What operating system is Zetastack based on?

Debian Linux.

Is VMware ESXi required?

No. VMware is not required nor is it supported.

Zetastack provides the complete stack for virtualization, storage, networking and backup.

Can I install the software on an existing Linux system?

No. The installer needs to install the dedicated OS. It is not possible to install as an application on an existing system.

What hardware do I need to install Zetastack?

See the Hardware Support page.

Is a trial version available?

Yes. A 60 day trial is available after installation of the ISO. See the Download page.

What happens to the software at the end of the trial?

Only the management software will stop working at the end of the trial period. We don’t touch any data you have created. The virtual machines will continue to run until they are shutdown.

There is no need to re-install Zetastack if you are purchasing a license. Just update the system when we have confirmed payment.


How is the software sold?

The software license is sold as a 12 month subscription.

How much does it cost?

See the Pricing page.

How do I pay for the software?

You need to install the software first, to prove that it works on your hardware.

We take payment by bank transfer and all major credit and debit cards.

What happens at the end of the subscription period?

The subscription does not automatically renew.

We'll remind you that payment is due before the end of the subscription period. However, you are under no obligation to renew.

You are free to walk away at the end of the subscription period.


What is a node?

A node is a server that has Zetastack installed.

How many nodes do I need?

Zetastack can run on a single node.

A minimum of 3 nodes is required to build a HA cluster.

What is the limit on the number of nodes I can use?

A maximum number of 9 nodes is currently supported.

We are supporting up to 15 nodes in late 2018.

VM Support

What VM types are supported?

KVM for fully virtualized systems. This includes Linux, Windows, BSD and other operating systems.

LXC for containers. Only Linux operating systems are supported for LXC.

Can VMs be imported?

Yes. We support the importing of various VM image formats including VMware VMDK, Hyper-V VHDX, VirtualBox VDI, QCOW2 and raw images.

Is a console included?

Yes. A web based console is included that is encrypted by SSL/TLS.

The console supports both KVM and LXC machines.

High Availability

Is there a high availability option?

Yes. Both storage HA and VM HA is included as standard.

How does the high availability option work?

It requires a minimum of 3 nodes.

For storage, the VM images are distributed and replicated between the nodes using erasure encoding.

For VM HA, failed nodes are fenced by hardware IPMI and the VMs on the failed node are restarted on different nodes.


How is the software managed?

Through a web based application. The application supports PCs, phones and tablets.

We use HTML5 with no fancy extensions, proprietary plugins or flash.

How is the software updated?

The software is updated over the Internet.

Updates are applied live to the cluster without any disruption to the running VMs.

What languages are supported?

At present, only English is supported.