SHADOWING

   SHADOWING loads the host-based volume shadowing driver. See VSI
   Volume Shadowing for OpenVMS for more information about setting
   system parameters for volume shadowing.

   Specify one of the following values:

   Value  Description

   0      No shadowing is enabled; SHDRIVER is not loaded. This is
          the default value.

   2      Host-based volume shadowing enabled; SHDRIVER is loaded.
          Host-based volume shadowing provides shadowing of all
          disks located on a standalone system or an OpenVMS Cluster
          system.