ECO NUMBER:	 DECDFS03_022
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                PRODUCT:	 DECdfs for OpenVMS
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                UPDATED PRODUCT: DECdfs for OpenVMS 2.2
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                APPRX BLCK SIZE: 25299
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DIGITAL

Cover Letter for DECdfs for OpenVMS Systems, version 2.2-3 ECO Kit 
DECdfs03_022.


ECO Kit DECdfs03_022 Description
--------------------------------

     DECdfs for OpenVMS System is a DECnet and DECnet/OSI layered product
     that provides  OpenVMS  users with the ability to use remote OpenVMS
     VAX  and  OpenVMS AXP disks as if they were directly attached to the
     local  OpenVMS  system.   DECdfs   software    provides  users   and 
     applications with transparent, high performance  file  access  while 
     using fewer CPU resources than standard DECnet  and  DECnet/OSI file
     access. 

     Systems running DECdfs software can act  as "servers"  or  "clients"
     or both.   DECdfs servers  make file resources available to  systems 
     running DECdfs  client software. DECdfs clients are able to use file
     resources of  systems  running  DECdfs  server  software.   The file 
     resources accessible through DECdfs can range in scope from a master
     file directory and all of its subordinate directories and files on a
     disk volume, to an  individual file.   The  DECdfs  server  software
     assigns a unique name to the resource to be shared. 


What's new in  DECdfs for OpenVMS Systems, Version 2.2-3?
     
DECdfs now supports OpenVMS V7.1 on Alpha and VAX hardware. 

The following problems have been resolved:

      o  Occasional system crash on system closedown when used with
         DECnet/Plus V6.3-5

      o  DECdfs client process sometimes jams in RWAST state when DECnet
         reports errors on the link. 


DECdfs V2.2-3 supersedes V2.2-2 and addresses all the problems originally
addressed in that release. These are as follows: 


      o  When you perform an operation on a file on a DECdfs device, the
         DECdfs   server   may  crash  unexpectedly  with  an  UNXSIGNAL
         exception at DFSSDRIVER+01B5B (OpenVMS VAX only).

      o  When you perform an operation on a file on a DECdfs device, the
         DECdfs server may crash unexpectedly with an SECURITY1 bugcheck
         at DFSSDRIVER_NPRO+3030 (OpenVMS Alpha only).

      o  If you enable checksumming, the DECdfs client may crash  during
         the   checksum  calculation  with  an  INVEXCEPTN  bugcheck  at
         DFSRRDRIVER+1100 (OpenVMS Alpha only).

      o  When multiple processes on a DECdfs client are accessing  files
         on  a DECdfs device, the processes may go into the LEF state if
         a DECnet error occurs on  the  connection  between  the  DECdfs
         client and the DECdfs server.

      o  On a system that is running both DECdfs and DECnet/OSI,  DECdfs
         may  appear  to  use  all  available DECnet connections because
         DECnet/OSI  ignores  requests   from   DECdfs   to   disconnect
         connections.

Installation Overview
---------------------

     This kit is supplied as a self extracting ZIP file.  To expand the kit 
     into its VMSINSTAL savesets type the following at the DCL prompt:

     $ Run DECDFS03_022.TXT.ZIPEXE

     You can install this kit with the VMSINSTAL utility by logging into
     the SYSTEM account, and typing the following at the DCL prompt:

         @SYS$UPDATE:VMSINSTAL DECDFS03_022 [location of the saveset]

     The saveset location may be a tape drive, or a disk directory  that
     contains the kit saveset.

     You MUST reboot your system when you have installed the kit.



  Copyright Digital Equipment Corporation 1997.  All Rights reserved.

  This software is proprietary to and embodies the confidential technology
  of Digital Equipment Corporation.  Possession, use, or copying of this
  software and media is authorized only pursuant to a valid written license
  from Digital or an authorized sublicensor.

        This ECO has not been through an exhaustive field test process.
        Due to the experimental stage of this ECO/workaround, Digital
        makes no representations regarding its use or performance.  The
        customer shall have the sole responsibility for adequate protection
        and back-up data used in conjunction with this ECO/workaround.