Overview of needed harddrive space per UCS role

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Produktlogo UCS Version 3.1

This article offers an overview over the used harddrive space for each UCS 3.1 system role. The size is determined after the first start and the successful domain join of the system.

The recommended disk space for a typical UCS 3.1 Master installation is 15GB. Even when it can be installed in a small disk (A full installation uses around 4GB), a production system would not perform as is expected. During updates and through log files, more space will be required as indicated in the table.


The difference between i386 and amd64 is too small, so no differentiation was made ​​between them.

The standard packages are described below. For the minimal installation, the DC Master was installed with the UDM and each system was installed with the UMC.

Used harddrive space per system role

System role Standard installation Minimal installation
DC Master 2.5 GB 1.1 GB
DC Backup 2.5 GB 1.1 GB
DC Slave 2.3 GB 1.1 GB
Memberserver 2.4 GB 1.1 GB
Base system 800 MB 800 MB

Standard packages for each system role

Package DC Master DC Backup DC Slave Memberserver Base system
Services for Windows
  Samba 4
  Samba 3
  Univention AD Connector
System services
  Mail-Server (Postfix, Cyrus IMAPd)
  Webmailer (Horde 4)
  DHCP
  Print server
  Web-Proxy-Server (Squid)
  Bacula (Backup)
  Network monitoring (Nagios)
Virtualization
  Virtual Machine Manager (UVMM)
  Xen virtualization server
  KVM virtualization server
Administrative toosl
  Univention Directory Manager X X
  Univention Management Console X X X X
  Univention Software Monitor
Desktop Environment
  Graphical user interface

Further links

Personal tools