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1.1. System Requirements
Ubuntu 18.04 LTS Server Edition supports four (4) major architectures: AMD64, ARM, POWER8, LinuxONE and z Systems (although this manual does not cover installation on LinuxONE or z Systems, see the dedicated guide2 for that).
Ubuntu Server 18.04 LTS introduces a new installer, the "live server" installer (sometimes called "Ubiquity for Servers" or simply "subiquity") which provides a more user friendly and faster installation experience.
At the time of writing it only supports amd64 processors and does not support LVM or RAID or other more sophisticated storage options, nor does it support reusing existing partitions on the disks of the system you are installing. It also requires access to the Ubuntu archive, possibly via a proxy. The previous, debian-installer based, installer is still available if these restrictions mean you can't use the live server installer.
The table below lists recommended hardware specifications. Depending on your needs, you might manage with less than this. However, most users risk being frustrated if they ignore these suggestions.
Table 2.1. Recommended Minimum Requirements
Install Type Install Method | CPU | RAM | Hard Drive Space | ||
Base System | All Tasks Installed | ||||
Server (Standard) | debian-installer | 1 gigahertz | 512 megabytes | 1.5 gigabyte | 2.5 gigabytes |
live server | 1 gigahertz (amd64 only) | 1 gigabyte | 1.5 gigabyte | n/a | |
Server debian-installer (Minimal) | 300 megahertz | 384 megabytes | 1.5 gigabytes | 2.5 gigabytes | |
The Server Edition provides a common base for all sorts of server applications. It is a minimalist design providing a platform for the desired services, such as file/print services, web hosting, email hosting, etc.