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Contents
1 Overview..................................................................................................5
About Parallel Access Volumes...................................................................................................5
Devices used in PAV operations..................................................................................................5
Base devices.......................................................................................................................5
Alias devices.......................................................................................................................5
Parallel Access Volumes modes...................................................................................................5
Goal mode.........................................................................................................................6
Implementing a dynamic PAV operation.............................................................................6
Compatibility mode..............................................................................................................7
Implementing a static PAV operation..................................................................................7
Hyper Parallel Access Volumes...............................................................................................7
Workload Manager..................................................................................................................7
I/O request workflow using Parallel Access Volumes......................................................................8
I/O request workflow using Hyper Parallel Access Volumes............................................................8
2 Requirements and specifications...................................................................9
Requirements...........................................................................................................................9
Notes......................................................................................................................................9
Functions incompatible with Parallel Access Volumes...................................................................10
IBM CC and Extended Remote Copy (XRC) for Mainframe restrictions............................................10
Parallel Access Volumes shared across multiple sysplexes.............................................................10
Preventive Service Planning......................................................................................................10
3 Defining devices.......................................................................................11
Unused device addresses usage as alias devices........................................................................11
Optimal Parallel Access Volumes results and base-to-alias device ratios.....................................11
Optimal dynamic PAV results and alias devices......................................................................11
Hyper Parallel Access Volumes optimum base/alias device ratio..............................................11
Defining logical control units to the Remote Web Console host storage system................................11
Defining base or alias devices to host operating systems..............................................................14
Finding a device eligible for dynamic Parallel Access Volumes management...................................18
Address mapping between base and alias devices.....................................................................21
4 Preparing for Parallel Access Volumes operations..........................................22
Setting the WLM operational mode...........................................................................................22
Hyper Parallel Access Volumes enablement from z/OS on z/VM workflow....................................23
Enabling Hyper Parallel Access Volumes on z/OS..................................................................23
Enabling Hyper Parallel Access Volumes from z/OS on z/VM.................................................24
MIH timer value setting workflow..............................................................................................24
5 Performing Parallel Access Volumes operations.............................................25
About assigning alias volumes..................................................................................................25
Assigning alias volumes to base volumes...................................................................................25
Deleting alias volumes from base volumes..................................................................................27
Assigning alias volumes to different base volumes.......................................................................28
Calculating Parallel Access Volumes used capacity......................................................................29
Refreshing Parallel Access Volumes data....................................................................................29
6 Verifying and monitoring devices................................................................30
The workflow for verifying and monitoring devices......................................................................30
Verifying the device definitions.................................................................................................30
Verifying the status of devices per channel path..........................................................................31
Verifying Hyper Parallel Access Volumes aliases from z/OS.........................................................32
Verifying Hyper Parallel Access Volumes aliases from z/OS on z/VM...........................................33
HP Confidential
Contents
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