You may want to backup your DevTest environment for many reasons. Only a few files need to be backed up to save your configuration.
Note: This procedure is intended for backup and restore within the same version of DevTest. Do not copy files from one version of DevTest to another. 
Please open a support ticket is you have questions.

All supported DevTest environments.

To save your current DevTest configuration, back up the following files and directories:

• Files located in the DevTest_Home directory:
  • *.properties
  • *.xml 
• Files located in the DevTest_Home/bin directory:
  • *.vmoptions
• Directories located in the DevTest_Home directory:
  • HotDeploy
  • vseDeploy
  • CVSMonitor