VS XDMS Cluster Server
                                          Release 1.53.01
                                  Customer Software Release Notice






                                           December, 1998
                              Copyright Wang Laboratories, Inc., 1998
                                               001136







                       DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITIES


                 The staff of Wang Laboratories, Inc., has taken due care in preparing
                 this manual; however, nothing contained herein modifies or alters in
                 any way the standard terms and conditions of the Wang purchase, lease,
                 or license agreement by which this software package was acquired, nor
                 shall Wang Laboratories, Inc., or its subsidiaries be liable for
                 incidental or consequential damages in connection with or arising from
                 the use of the software package, the accompanying manual, or any
                 related manuals.



                                          SOFTWARE NOTICE


                 All Wang Program Products are licensed to customers in accordance with
                 the terms and conditions of the Wang Laboratories, Inc., Standard
                 Program Products License; no ownership of Wang Software is transferred
                 and any use beyond the terms of the aforesaid License, without the
                 written authorization of Wang Laboratories, Inc., is prohibited.



                                      RESTRICTED RIGHTS LEGEND

                 Use, duplication or disclosure by the Government of this technical data
                 is subject to restrictions stated in paragraph (A) (15) of the Rights
                 in Technical Data and Computer Software clause at 48-CFR-252-227-7013.



















                                              PREFACE


                This Customer Software Release Notice (CSRN) provides important
                information for using Release 1.53.01 of the VS XDMS Cluster Server and
                is intended for all users.

                This CSRN is organized as follows:

                Chapter 1 describes enhancements to the release.

                Chapter 2 details hardware and software requirements.

                Chapter 3 lists problems corrected since the last general release.

                Chapter 4 describes restrictions and special considerations.

                Chapter 5 lists the files included in this package.

                Chapter 6 provides installation instructions.









          CHAPTER 1
          ENHANCEMENTS

                N/A



          CHAPTER 2
          HARDWARE AND SOFTWARE REQUIREMENTS

          2.1   HARDWARE REQUIREMENTS

                A 16-MB Virtual Address Capable processor linked with with another
                similar processor utilizing RSF controllers.


          2.2   SOFTWARE REQUIREMENTS


                VS Operating System 7.53.01 or later

                XDMS version 1.53.01 or later



          CHAPTER 3
          CORRECTED PROBLEMS


                The problems listed below have been resolved in this release:

                PTR Number   Problem Resolution

                E127358      PCDU in XDMS when performing a rewrite using entry-ordered
                             files.

                M200023683   PC01 in special input over the cluster.

                M200023680   System crash during read special input operation.










          CHAPTER 4
          RESTRICTIONS AND SPECIAL CONSIDERATIONS

                The implementation of XDMS Cluster Server is intended to provide for
                accessability in a clustered environment.  In that a second level of
                file processing is being added it should be understood that performance
                measurements for IO processed accross the cluster will have somewhat
                greater CPU costs.  Application performance levels have been found to be
                at acceptable levels.  Careful tuning in a multi-system environment is
                much more important.

                This release no longer supports the COBOL verb 'Hold Extention Rights'.

                Rollforward recovery cannot be performed across the cluster.

                The XDMSSERV does not update file IO counts until a file close operation
                is issued, this will affect the accuracy of SAM data collection and
                analysis.












          CHAPTER 5
          MEDIA CONTENTS


                LIBRARY = @SYSTEM@

                Module    Version      Description

                XDMSSERV  1.53.01      XDMS Cluster Server


                Library = CSRNLIB

                XSRVSRN   1.53.01      Software Release Notice (this document)









          CHAPTER 6
          INSTALLATION


          6.1   PRELIMINARY STEPS FOR UPGRADES

                1. Inhibit logons and ensure that all users are logged off the system.

                2. Logon to the system as a system administrator.



          6.2   SOFTWARE INSTALLATION USING VS BACKUP (All CP Types)

                Refer to the "VS Media, Transfer, and Device Utilities Reference" for
                instructions on using the BACKUP and DISKINIT utilities.

          6.2.1 Running BACKUP

                1. Mount the diskette containing the Release 1.53.01 XDMS Cluster Server.

                3. Using BACKUP, restore the release to the system volume disk, using
                   the following specifications:

                   INPUT screen:
                           VOLUME = (volume name of distribution media)
                           DEVICE = DISK         FUNCTION = RESTORE
                                      ERRDISP  = YES
                                      FILESEQ  =
                                      MOREFILE = NO
                                      SELECT   = NO

                   OUTPUT screen:
                           VOLUME = (name of new system volume)
                           DEVICE = DISK
                           CLEAR  = NO







                   OPTIONS screen:
                           DUPFILES = SCRATCH

                   LOGFILES screen:
                          Press ENTER to obtain a log file.


                       EOJ screen:
                          Press PF16 or ENTER to terminate BACKUP.

                4. Dismount the release media from the tape drive.


          6.3   FINAL STEPS

                1. If you are not IPLed, do so.  Specify the normal configuration file.
                   Inhibit logons.