=================== System Requirements =================== Memory ------ Memory requirements for running an Nextcloud server are greatly variable, depending on the numbers of users and files, and volume of server activity. Nextcloud needs a minimum of 128MB RAM, and we recommend a minimum of 512MB. Recommended Setup for Running Nextcloud --------------------------------------- For best performance, stability, support, and full functionality we recommend: * Red Hat Enterprise Linux 7 / Ubuntu 16.04 LTS * MySQL/MariaDB * PHP 7.0 + * Apache 2.4 with mod_php Supported Platforms ------------------- * Server: Linux (Debian 7, SUSE Linux Enterprise Server 11 SP3 & 12, Red Hat Enterprise Linux/CentOS 6.5 and 7 (7 is 64-bit only), Ubuntu 14.04 LTS, 16.04 LTS) * Web server: Apache 2 (mod_php, php-fpm) or Nginx (php-fpm) * Databases: MySQL/MariaDB 5.5+; PostgreSQL; Oracle 11g (currently only possible if you `contact us <https://nextcloud.com/enterprise>` as part of a subscription) * PHP 5.6 + required * Hypervisors: Hyper-V, VMware ESX, Xen, KVM * Desktop: Windows XP SP3 (EoL Q2 2015), Windows 7+, Mac OS X 10.7+ (64-bit only), Linux (CentOS 6.5, 7 (7 is 64-bit only), Ubuntu 12.04 LTS, 14.04 LTS, 14.10, Fedora 20, 21, openSUSE 12.3, 13, Debian 7 & 8). * Mobile apps: iOS 7+, Android 4+ * Web browser: IE11+, Microsoft Edge, Firefox 14+, Chrome 18+, Safari 7+ See :doc:`source_installation` for minimum software versions for installing Nextcloud. Database Requirements for MySQL / MariaDB ----------------------------------------- The following is currently required if you're running Nextcloud together with a MySQL / MariaDB database: * Disabled or BINLOG_FORMAT = MIXED configured Binary Logging (See: :ref:`db-binlog-label`) * InnoDB storage engine (MyISAM is not supported) * "READ COMMITED" transaction isolation level (See: :ref:`db-transaction-label`) Emoji (UTF8 4-byte) support with MySQL / MariaDB ================================================ If you want to use UTF8 4-byte characters such as Emojis on your server, the database needs to be created with character set ``utf8mb4`` and collate ``utf8mb4_general_ci``, e.g.:: CREATE DATABASE nextcloud CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci; Additionally the following InnoDB settings need to be set:: [mysqld] innodb_large_prefix=on innodb_file_format=barracuda innodb_file_per_table=true See :doc:`../configuration_database/mysql_4byte_support` for more information.