CONTENTS

  Title Page

  Copyright Page

  Preface

  1      Introduction to DECdfs
    1.1 Components of a DECdfs Environment
      1.1.1      Digital Distributed Name Service
      1.1.2      Access Points
      1.1.3      DECdfs Management Components
        1.1.3.1      The Server
        1.1.3.2      The Client
        1.1.3.3      The Communication Entity
    1.2 Client-Server Consistency Issues
      1.2.1      System Times on the Client and Server
      1.2.2      Logical Names on the Client and Server
    1.3 Comparison of Standard OpenVMS File Access and DECdfs File Access
    1.4 The DFS$CONTROL Commands
      1.4.1      Using DFS$CONTROL Commands in DECdfs Command Files
      1.4.2      Using DFS$CONTROL Commands Interactively
      1.4.3      Getting Help with DECdfs

  2      Managing a DECdfs Server
    2.1 Setting System Parameters
      2.1.1      Limiting the Number of Open Files
      2.1.2      Controlling DECdfs Activity
      2.1.3      Limiting Inactive DECdfs DECnet Links
    2.2 Setting Up Proxy Accounts
      2.2.1      Setting Up Privileges
      2.2.2      Setting Up UICs, ACLs, and User Names
        2.2.2.1      User Identification Codes
        2.2.2.2      Access Control Lists
        2.2.2.3      User Names
      2.2.3      Giving VMScluster Clients Access to Server Files
      2.2.4      Allowing Client Users to Print Server Files
    2.3 Creating and Managing Access Points
      2.3.1      Deciding Where to Place Access Points
      2.3.2      Adding Access Points
        2.3.2.1      Systems With DECdns
        2.3.2.2      Systems Without DECdns
        2.3.2.3      Using the /LOCAL Qualifier
      2.3.3      Determining Access Point Information
      2.3.4      Changing Access Points
      2.3.5      Removing Access Points Added with the /CLUSTER_ALIAS Qualifier
      2.3.6      Maintaining Consistency with DECdns
    2.4 Protecting Server Files
    2.5 Protecting Individual Files
    2.6 Managing the Persona Cache
      2.6.1      Specifying the Lifetime of Persona Blocks
      2.6.2      Flushing the Cache
      2.6.3      Displaying Cache Counters
    2.7 Managing the Data Cache
      2.7.1      Specifying the Size of the Cache
      2.7.2      Specifying the Per-File Quota
      2.7.3      Displaying Cache Counters
    2.8 Using a VMScluster as a DECdfs Server
      2.8.1      Serving an Access Point from a Cluster Alias
      2.8.2      Serving an Access Point from Individual Cluster Members
    2.9 Stopping and Starting DECdfs on Your System

  3      Managing a DECdfs Client
    3.1 Setting System Parameters
    3.2 Mounting Access Points
      3.2.1      Assigning Device Unit Numbers
      3.2.2      Assigning Logical Names
      3.2.3      Specifying Volume Names
      3.2.4      Enabling Data Checking
      3.2.5      Mounting Alternative Access Points
    3.3 Displaying Client Device Information
    3.4 Using the Client Device
      3.4.1      Printing Server-Based Files on a Client
      3.4.2      User Identification Codes on Server Files
      3.4.3      Access Control Lists on Server Files
      3.4.4      DECdfs Error Conditions
      3.4.5      DECdfs Mount Verification
      3.4.6      Partially Mounted Devices
    3.5 Performing Checksum Comparisons on DECdfs Connections
    3.6 Printing Files from a Client Device
    3.7 Using the OpenVMS Backup Utility with a Client Device
    3.8 Using a VMScluster as a DECdfs Client
      3.8.1      Using Cluster Aliases
      3.8.2      Submitting Print and Batch Jobs
    3.9 Stopping and Starting DECdfs on Your System

  4      DFS$CONTROL Commands

  ADD ACCESS_POINT

  DISMOUNT

  EXIT

  HELP

  MOUNT

  REMOVE ACCESS_POINT

  SET COMMUNICATION

  SET SERVER

  SHOW ACCESS_POINT

  SHOW CLIENT

  SHOW COMMUNICATION

  SHOW SERVER

  SHOW VERSIONS

  SHUTDOWN COMMUNICATION

  SNAPSHOT CLIENT

  SNAPSHOT COMMUNICATION

  SNAPSHOT SERVER

  START COMMUNICATION

  START SERVER

  STOP COMMUNICATION

  STOP SERVER

  A Status Messages

  B Troubleshooting the DECdfs Environment
    B.1 What to Do First
    B.2 Controlling Event and Error Messages
    B.3 Using Other DECdfs Servers and Clients to Isolate Problems
    B.4 Solving Common DECdfs Problems
      B.4.1     DECdfs Fails After Upgrading from an Earlier Version
      B.4.2      Unexpected Error While Opening a File
      B.4.3     Unexpected Error While Accessing an Open File
      B.4.4     Unexpected DECdns Errors when Performing Access Point Operations
      B.4.5     Problems Accessing Server Files
        B.4.5.1      New Client User Cannot Access Server Files
        B.4.5.2      Existing Client User Cannot Access Server Files
      B.4.6     Problems Printing Server Files
      B.4.7     Problems Backing Up Server Files

  C Adjusting DECnet and Client RMS Parameters to Enhance Performance
    C.1 Setting DECnet Network Parameters
      C.1.1      Line Receive Buffers/Station Buffers
      C.1.2      Pipeline Quota
      C.1.3      Maximum Window
      C.1.4      Maximum Links/Transport Connections
    C.2 Setting Client RMS Default Parameters
      C.2.1      Sequential File Access
      C.2.2      Indexed Sequential File or Relative File Access

  D Obsolete Command Qualifiers and Configuration Logicals

  E DECdfs Compatibility with Earlier DECdfs Software Versions
    E.1 File Specification Differences
    E.2 Server to Client UIC Conversion
    E.3 Extraneous Error Messages on Certain DFS$CONTROL Commands
    E.4 ACL Suppression
    E.5 SHOW CLIENT /FREE_BLOCKS Output

  F Information for Programmers