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Installation notes

Review the installation notes below before beginning an installation or upgrade.

Because Double-Take has operating system dependent files, if you are upgrading your operating system (to a new major version, not a service pack) and have Double-Take installed, you must remove Double-Take prior to the operating system upgrade. Uninstall Double-Take, perform the operating system upgrade, and then reinstall Double-Take.
During installation, a file called DTInfo.exe is installed to the Double-Take installation directory. This program can be run to collect configuration data for use when reporting problems to technical support. It gathers Double-Take log files; Double-Take and system settings; network configuration information such as IP, WINS, and DNS addresses; and other data which may be necessary for technical support to troubleshoot issues. After running the executable, a zip file is automatically created with the information gathered.
Since Double-Take installs device drivers, it is recommended that you update your Windows Recovery Disk, before installing or making changes to your servers. For detailed instructions on creating a recovery disk, see your Windows reference manuals. Make sure that you select the option to back up the registry when building the repair disks.
If you are installing to a drive other than the drive which contains your system TEMP directory, the Microsoft Windows Installer will still load approximately 100 MB of data to the TEMP directory during the installation. If you do not have enough disk space on the drive that contains the TEMP directory, you may need to change where it is located.
If during the installation you receive the message that the wizard was interrupted before the installation could be completed, you will need to delete the registry value DefaultAccessPermissions under the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ole key in order to install Double-Take. This registry setting denies permissions for retrieving and setting property values. Deleting this registry setting will not have a negative impact on your server.
The following files require administrator credentials. If you are not logged in with administrator credentials, you will be prompted to supply them.
- dfo.exe
- DTInfo.exe
- setup.exe