The main goal of Extended File Specifications is to provide
    extended file naming capabilities, while also:

    o  Maintaining high reliability, scalability, and availability

    o  Maintaining the traditional (ODS-2) serial file interoperation
       capabilities

    o  Causing the least possible amount of change for layered
       products and applications

    However, once ODS-5 volumes are enabled, some of the new
    capabilities can potentially impact certain applications or
    layered products, as well as some areas of system management.

    The following guidelines and description of changes in the base
    operating system will help you determine the level of impact on
    your OpenVMS environment.