z/VM: CP Planning and Administration - z/VM - IBM

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 333CSE Capabilities . . . . . . . . . . . . . . . . . . . . . . . 333Users Supported . . . . . . . . . . . . . . . . . . . . . . . 334Setting Up a CSE Complex . . . . . . . . . . . . . . . . . . . 334Planning for CSE . . . . . . . . . . . . . . . . . . . . . . . 334Requirements . . . . . . . . . . . . . . . . . . . . . . . . 334Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . 335Supported Features . . . . . . . . . . . . . . . . . . . . . . 335Sharing DASD Volumes . . . . . . . . . . . . . . . . . . . . 336Avoiding Shared DASD I/O Bottlenecks . . . . . . . . . . . . . 337Placing of the CSE Area . . . . . . . . . . . . . . . . . . . 340Defining Volumes Containing Minidisks to be Shared . . . . . . . . 340Cross System Linking and Synchronization of Directories . . . . . . . 340Spool File Directory Statements . . . . . . . . . . . . . . . . . 341Preparing for CSE . . . . . . . . . . . . . . . . . . . . . . 341Cabling the Hardware . . . . . . . . . . . . . . . . . . . . 341Preparing for a Single Source Directory . . . . . . . . . . . . . 341Nonshared Directory Entries . . . . . . . . . . . . . . . . . 342Enabling CSE . . . . . . . . . . . . . . . . . . . . . . . . . 345Installing the VM/Pass-Through Facility and Its Modifications . . . . . . 345Defining CP for Each System . . . . . . . . . . . . . . . . . . 346System Definition for CSE . . . . . . . . . . . . . . . . . . 346CP_OWNED Statements . . . . . . . . . . . . . . . . . . . 347Example of a System Configuration File . . . . . . . . . . . . . 347Initializing the Volumes for Cross System Link . . . . . . . . . . . . 349Generating the Cross System Link Facility . . . . . . . . . . . . 349Initializing the CSE Area on Shared Minidisk Volumes . . . . . . . . 350Preparing the Communication Virtual Machine (CVM) . . . . . . . . . 350Verifying Your CSE Configuration . . . . . . . . . . . . . . . . . 353Verifying Cross System Link . . . . . . . . . . . . . . . . . . 353Enabling Cross System Spool . . . . . . . . . . . . . . . . . . 353Starting CSE Communication . . . . . . . . . . . . . . . . . 353Verifying Cross System Spool . . . . . . . . . . . . . . . . . 354Activating Spool for Systems Not Active after Start CSECOM . . . . . 355Phasing CSE into the Production Environment . . . . . . . . . . . . 356Networking Implications of CSE . . . . . . . . . . . . . . . . 357Administering CSE . . . . . . . . . . . . . . . . . . . . . . . 358How Linking Works in z/VM . . . . . . . . . . . . . . . . . . . 358How CSE Extends Linking . . . . . . . . . . . . . . . . . . . 359Controlling Cross System Link . . . . . . . . . . . . . . . . . 359CSE Area . . . . . . . . . . . . . . . . . . . . . . . . . 359Location of the CSE Area . . . . . . . . . . . . . . . . . . 361Protecting the CSE Area . . . . . . . . . . . . . . . . . . . 361Placing of the CSE Area . . . . . . . . . . . . . . . . . . . 361VM I/O Performance Measurement for Shared DASD . . . . . . . . . 365What Is Cross System Spool? . . . . . . . . . . . . . . . . . . 366How CSE Extends Spooling . . . . . . . . . . . . . . . . . . 367z/VM Spooling Commands Extended by CSE . . . . . . . . . . . 368Copy Input (Reader) Spool Files . . . . . . . . . . . . . . . . 369Copy Output (Print and Punch) Spool Files . . . . . . . . . . . . 370Spool File Numbering . . . . . . . . . . . . . . . . . . . . 370Access to Spool Files . . . . . . . . . . . . . . . . . . . . 370VM/Pass-Through Facility Functions for Cross System Spool . . . . . . 371Spool Synchronization Request Tracing . . . . . . . . . . . . . 371Multiple Concurrent Logon Sessions . . . . . . . . . . . . . . . 371Preparing to Deal with Outages . . . . . . . . . . . . . . . . . . 372Part 2. System Planning and Administration 19