docs: update info about requirements

docs/admin/system-overview.rst

@@ -1,163 +1,171 b''
 .. _system-overview-ref:
 
 System Overview
 ===============
 
 Latest Version
 --------------
 
 * |release| on Unix and Windows systems.
 
 System Architecture
 -------------------
 
 The following diagram shows a typical production architecture.
 
 .. image:: ../images/architecture-diagram.png
   :align: center
 
 Supported Operating Systems
 ---------------------------
 
 Linux
 ^^^^^
 
 * Ubuntu 14.04
 * CentOS 6.2 and 7
 * Debian 7.8
 * RedHat Fedora
 * Arch Linux
 * SUSE Linux
 
 Windows
 ^^^^^^^
 
 * Windows Vista Ultimate 64bit
 * Windows 7 Ultimate 64bit
 * Windows 8 Professional 64bit
 * Windows 8.1 Enterprise 64bit
 * Windows Server 2008 64bit
 * Windows Server 2008-R2 64bit
 * Windows Server 2012 64bit
 
 Supported Databases
 -------------------
 
 * SQLite
 * MySQL
 * MariaDB
 * PostgreSQL
 
 Supported Browsers
 ------------------
 
 * Chrome
 * Safari
 * Firefox
 * Internet Explorer 10 & 11
 
 System Requirements
 -------------------
 
 |RCM| performs best on machines with ultra-fast hard disks. Generally disk
 performance is more important than CPU performance. In a corporate production
 environment handling 1000s of users and |repos| you should deploy on a 12+
 core 64GB RAM server. In short, the more RAM the better.
 
+
+For example:
+
+ - for team of 1 - 5 active users you can run on 1GB RAM machine with 1CPU
+ - above 250 active users, |RCM| needs at least 8GB of memory.
+   Number of CPUs is less important, but recommended to have at least 2-3 CPUs
+
+
 .. _config-rce-files:
 
 Configuration Files
 -------------------
 
 * :file:`/home/{user}/.rccontrol/{instance-id}/rhodecode.ini`
 * :file:`/home/{user}/.rccontrol/{instance-id}/mapping.ini`
 * :file:`/home/{user}/.rccontrol/{vcsserver-id}/vcsserver.ini`
 * :file:`/home/{user}/.rccontrol/supervisor/supervisord.ini`
 * :file:`/home/{user}/.rccontrol.ini`
 * :file:`/home/{user}/.rhoderc`
 * :file:`/home/{user}/.rccontrol/cache/MANIFEST`
 
 For more information, see the :ref:`config-files` section.
 
 Log Files
 ---------
 
 * :file:`/home/{user}/.rccontrol/{instance-id}/enterprise.log`
 * :file:`/home/{user}/.rccontrol/{vcsserver-id}/vcsserver.log`
 * :file:`/home/{user}/.rccontrol/supervisor/supervisord.log`
 * :file:`/tmp/rccontrol.log`
 * :file:`/tmp/rhodecode_tools.log`
 
 Storage Files
 -------------
 
 * :file:`/home/{user}/.rccontrol/{instance-id}/data/index/{index-file.toc}`
 * :file:`/home/{user}/repos/.rc_gist_store`
 * :file:`/home/{user}/.rccontrol/{instance-id}/rhodecode.db`
 * :file:`/opt/rhodecode/store/{unique-hash}`
 
 Default Repositories Location
 -----------------------------
 
 * :file:`/home/{user}/repos`
 
 Connection Methods
 ------------------
 
 * HTTPS
 * SSH
 * |RCM| API
 
 Internationalization Support
 ----------------------------
 
 Currently available in the following languages, see `Transifex`_ for the
 latest details. If you want a new language added, please contact us. To
 configure your language settings, see the :ref:`set-lang` section.
 
 .. hlist::
 
   * Belorussian
   * Chinese
   * French
   * German
   * Italian
   * Japanese
   * Portuguese
   * Polish
   * Russian
   * Spanish
 
 Licencing Information
 ---------------------
 
 * See licencing information `here`_
 
 Peer-to-peer Failover Support
 -----------------------------
 
 * Yes
 
 Additional Binaries
 -------------------
 
 * Yes, see :ref:`rhodecode-nix-ref` for full details.
 
 Remote Connectivity
 -------------------
 
 * Available
 
 Executable Files
 ----------------
 
 Windows: :file:`RhodeCode-installer-{version}.exe`
 
 Deprecated Support
 ------------------
 
 - Internet Explorer 8 support deprecated since version 3.7.0.
 - Internet Explorer 9 support deprecated since version 3.8.0.
 
 .. _here: https://rhodecode.com/licenses/
 .. _Transifex: https://www.transifex.com/projects/p/RhodeCode/