Magento System Requirements

Magento system requirements in base level, Magento will require the following software:

• Supported Operating Systems:
  • Linux x86, x86-64
• Supported Web Servers:
  • Apache 1.3.x
  • Apache 2.0.x
  • Apache 2.2.x
  • Nginx (starting from Magento 1.7 Community and 1.12 Enterprise versions)
• Supported Browsers:
  • Microsoft Internet Explorer 7 and above
  • Mozilla Firefox 3.5 and above
  • Apple Safari 5 and above on Mac only
  • Google Chrome 7 and above
  • Adobe Flash browser plug-in should be installed
• PHP Compatibility:
  • 5.2.13 – 5.3.15
  • Required extensions:
    • PDO_MySQL
    • simplexml
    • mcrypt
    • hash
    • GD
    • DOM
    • iconv
    • curl
    • SOAP (if Webservices API is to be used)
  • Safe_mode off
  • Memory_limit no less than 256Mb (preferably 512)
• MySQL:
  • EE 1.13.0.0 or later: MySQL 5.0.2 or newer
  • EE 1.12.0.2 or earlier: MySQL 4.1.20 or newer
  • CE (all versions): MySQL 4.1.20 or newer
• Redis NoSQL (optional for CE 1.8 and later, EE 1.13 and later)
  • redis-server version 2.6.9 or later
  • phpredis version 2.2.2 or later
• SSL:
  • If HTTPS is used to work in the admin, SSL certificate should be valid. Self-signed SSL certificates are not supported
• Server – hosting – setup:
  • Ability to run scheduled jobs (crontab) with PHP 5
  • Ability to override options in .htaccess files

And the last question is how do you know your server/hosting meet these requirements or not?

There is a very simple way to check with this article tips How do I know if my hosting compatible with Magento?