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System Requirements

Drupal WxT can run on a wide range of desktop and server operating systems including Windows, MacOS, Linux and UNIX. However, you will need to configure the environment according to the standard Drupal 7 requirements. This page provides a brief summary of those requirements and recommendations. More information is available from the system requirements page at

Web server

  • Apache 2.x
  • Microsoft IIS

Database server

  • PostgreSQL 8.4+
  • MySQL 5.0.15+
  • SQLite 3.3.7+ (Development)


  • 5.3.4+
  • 5.4.4+ (Recommended)


Installing a PHP accelerator is highly recommended, especially for production use, such as APC for Apache or WinCache for IIS. On all platforms, change the memory_limit variable in php.ini to be at least 256M. If you are still having problems (seeing “white screens” or errors during installation) try setting:

  • max_execution_time to around 120
  • realpath_cache_size to 512K, 1M or 2M
  • max_input_time to around 120

Additionally, if using MySQL:

  • innodb_flush_log_at_trx_commit to 2
  • max_allowed_packet to 96
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