---
myst:
  html_meta:
    description: "Complete reference documentation for Ubuntu Server, including glossary, system requirements, and technical specifications."
---

(reference)=
# Ubuntu Server reference

Our reference section is used for quickly checking what software and commands
are available, and how to interact with various tools.

* Our {ref}`reference-glossary` contains definitions for common terminology
  used in this documentation.

```{toctree}
:hidden:
:titlesonly:

glossary
```

## Server installation

Although Ubuntu Server is flexible and designed to run on a wide range of 
hardware, you can refer to the following requirements page to see the
various architectures Ubuntu Server can be run on, and suggested minimal values
for memory and storage.

```{toctree}
:titlesonly:

installation/system-requirements
```

## High Availability

The recommended tool for managing High Availability Pacemaker clusters is now
`pcs`, as of 23.04 (Lunar). Here we provide a reference guide to help you
migrate from `crmsh` to `pcs`.

```{toctree}
:titlesonly:

high-availability
```

## Other tools

This section contains suggestions of other useful tools for system
administrators.

```{toctree}
:titlesonly:

other-tools
```