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NFS Shares

A share is any volume, drive, or directory resource that is shared across a network. During failover, the target can assume or add any source shares so that they remain accessible to the end users. Automatic share failover only occurs for standard Windows file system shares. Other shares, including NFS shares, must be configured for failover through the failover scripts or created manually on the target.

  1. On your target, set the NFS service to manual startup. This allows the post-failover script on the target to control when the service starts on the target.
  2. Create each shared drive or directory on the target exactly as it exists on the source. Configure each drive or directory as an NFS share by following these steps.
    1. Right-click the drive or directory that you want to share, select Sharing, and click the NFS Sharing tab on the Program Files Properties dialog box.
    2. Enable Share this folder, provide the name of the share, and click OK.
  3. On the target machine, copy the chngname utility, chngname.exe, from the \tools\Win2K directory of the Double-Take CD or from the support web site to the directory where Double-Take is installed.
  4. Add the following to your failover script.

    5. rem Commands for NFS share failover

    rem The chngname utility (chngname.exe) must be located in the same

    rem directory where Double-Take is installed.

    rem The following command temporarily changes the name of the server. You

    rem will need to replace <drive>:\<directory>\ with the location of

    rem your Double-Take chngname utility and replace

    rem source_name with the name of the source machine.

    <drive>\<directory>\chngname /s source_name

    rem The following command starts the NFS service

    net start "Server for NFS"

In the event of a failure, the clients must remount the shares in order to access them.