# Choose Installation Folders

Choose disk drives and directories according to your requirements and the space available on your computer. The default directories are:

Program files: | `C:\Program Files\IBM\WebSphere MQ`
Data files: | `C:\Program Files\IBM\WebSphere MQ`
IBM® Global Security Kit files: | `C:\Program Files\IBM\GSK7`
Log files: | `C:\Program Files\IBM\WebSphere MQ\Log`

The folders are used as follows:

Program files
  The WebSphere® MQ executables and binaries. These occupy roughly 20 Mb. To find out exactly how much space, when you reach the Setup Type install panel, choose Custom install, and on the Features panel, click the Space button to see how much space is needed for each feature and also how much space you have available on your drives. The features that are already selected when you first open the Features panel after choosing Custom are the ones included in the Typical install.
Data files
  The files containing WebSphere MQ queue managers, queues, messages, code page conversion tables, and so forth. Your applications may be such that these files become very large. Check with your system administrator if you are not sure how much space you will need. The data files directory is only created if you install one of the features that require it, which are:
  - Server
  - Windows® Client
  - Java™ Messaging
IBM Global Security Kit files
  The files related to the IBM Global Security Kit, which supports SSL connections in WebSphere MQ for Windows. The IBM Global Security Kit files directory is only created if you install one of the features that require it, which are:
  - Server
  - Windows Client
Log files
  WebSphere MQ keeps logs of its transactions. The log file sizes are in proportion to the amount of messaging activity in your application. The files continue to grow until deleted. Check with your system administrator if you are not sure how much space you will need. The log files directory is only created if you install the feature that requires it, which is:
  - Server

Parent topic: Installation Choices