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Contents
1 Overview..................................................................................................5
Parallel Access Volumes.............................................................................................................5
Base and alias devices..............................................................................................................5
Parallel Access Volumes modes...................................................................................................5
Parallel Access Volumes in dynamic mode...............................................................................6
Parallel Access Volumes in static mode....................................................................................6
Workload Manager..................................................................................................................6
WLM in goal mode..............................................................................................................7
WLM in compatibility mode..................................................................................................7
Hyper Parallel Access Volumes...................................................................................................7
Flow of I/O requests using Parallel Access Volumes.......................................................................7
Flow of I/O requests using Hyper Parallel Access Volumes.............................................................8
2 Requirements and specifications...................................................................9
Requirements...........................................................................................................................9
Functions incompatible with Parallel Access Volumes...................................................................10
IBM CC and Extended Remote Copy (XRC) for Mainframe restrictions............................................10
Sharing Parallel Access Volumes across multiple sysplexes............................................................10
Preventive Service Planning......................................................................................................10
3 Performing Parallel Access Volumes operations.............................................11
Assigning aliases to base volumes............................................................................................11
Removing aliases from base volumes.........................................................................................12
Reassigning aliases ................................................................................................................13
Calculating Parallel Access Volumes used capacity......................................................................14
Refreshing Parallel Access Volumes data....................................................................................15
4 Verifying and monitoring devices................................................................16
Verifying base and alias device definition..................................................................................16
Verifying status of devices per channel path...............................................................................16
Verifying Hyper Parallel Access Volumes aliases from z/OS.........................................................17
Verifying Hyper Parallel Access Volumes aliases from z/OS on z/VM...........................................18
Monitoring with MVS commands..............................................................................................19
DISPLAY command.................................................................................................................19
DEVSERV PATHS command......................................................................................................19
DEVSERV QPAV commands.....................................................................................................20
DISPLAY IOS HYPERPAV command...........................................................................................21
GTF I/O tracing.....................................................................................................................22
VM CP commands for z/VM....................................................................................................22
QUERY CU command.............................................................................................................22
QUERY DASD DETAILS command.............................................................................................23
QUERY PAV command............................................................................................................23
QUERY VIRTUAL DASD DETAILS command.................................................................................24
QUERY VIRTUAL PAV command................................................................................................24
5 Troubleshooting........................................................................................25
Troubleshooting......................................................................................................................25
6 Support and other resources......................................................................26
Contacting HP........................................................................................................................26
Subscription service............................................................................................................26
Documentation feedback....................................................................................................26
Related information.................................................................................................................26
HP websites......................................................................................................................26
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