DIGITAL Network Process Failover (NPF)
                      DIGITAL Network Process Failover (NPF)
                      DIGITAL Network Process Failover (NPF)
                                   Version 1.0
                                   Version 1.0
                                   Version 1.0

                                   Cover Letter
                                   Cover Letter
                                   Cover Letter

                                September 9th 1998

                             Part Number: AA-RF2CA-TE


         Dear Customer,

         DIGITAL is delighted that you have chosen DIGITAL Network
         Process Failover to satisfy your high availability application
         requirements. Please read this cover letter carefully before
         installing your software kit.

         DIGITAL Network Process Failover Version 1.0 is a software
         foundation for High Availability applications which fills the
         gap between current cluster technology and Fault Tolerant
         systems. Digital Network Process Failover makes it easier to
         build applications which provide continuous services where both
         logic and data can seamlessly survive a software failure.
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         DIGITAL Network Process Failover Version 1.0 for DIGITAL UNIX
         is comprised of the software kit and accompanying
         documentation.

         Refer to the Software Product Description (SPD 70.43), the
         DIGITAL Network Process Failover Installation Guide (AA-RF2AA-
         TE) and the Release Notes for information on software and
         hardware prerequisites.

         CONTENTS OF THE SOFTWARE KIT

         Your kit includes the following DIGITAL Network Process
         Failover software distribution media for DIGITAL UNIX 4.0D:

         . DIGITAL Network Process Failover Base Components
           
         . DIGITAL Network Process Failover Development Toolkit
           
         . DIGITAL Network Process Failover Configuration Tools
           
         . DIGITAL Network Process Failover Programming examples
           
         . DIGITAL Network Process Failover unsupported online man pages
           
         . DIGITAL Network Process Failover unsupported tools



         1
                             
           UNIX is a registered trademark in the United States and other
         countries, licensed exclusively through X/Open Company Ltd.






         Your kit also contains the DIGITAL Network Process Failover
         Version 1.0
         documentation set, which is composed of:

         . DIGITAL Network Process Failover Programmer's Guide
           
         . DIGITAL Network Process Failover Reference Manual
           
         . DIGITAL Network Process Failover Configuration Guide
           
         . DIGITAL Network Process Failover Installation Guide
           
         . DIGITAL Network Process Failover Manager Administrator Guide
           
         . DIGITAL Network Process Failover Rev 1.0 Release Notes

         Note that you will only be able to install the software for
         which you have purchased licenses.

         RELEASE NOTES

         The Release Notes can be printed out during installation. The
         Release Notes contain important information including
         recommendations, amendments to the documentation and
         restrictions.