Hp XP P9500 Storage Bedienungsanleitung PDF herunterladen (Seite 3)

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 Defining devices.......................................................................................11

Selecting optimum base/alias device ratio.................................................................................11

Defining an LCU.....................................................................................................................11

Defining a base or alias device................................................................................................14

Finding a device eligible for dynamic Parallel Access Volumes management...................................17

Address mapping between base and alias devices.....................................................................21

4 Preparing for Parallel Access Volumes operations..........................................22

Setting the WLM mode............................................................................................................22

Enabling Hyper Parallel Access Volumes on z/OS......................................................................23

Enabling Hyper Parallel Access Volumes from z/OS on z/VM......................................................23

Setting the MIH timer value......................................................................................................24

5 Performing Parallel Access Volumes operations.............................................25

Assigning aliases to base volumes............................................................................................25

Removing aliases from base volumes.........................................................................................26

Reassigning aliases ................................................................................................................28

Calculating Parallel Access Volumes used capacity......................................................................28

Refreshing Parallel Access Volumes data....................................................................................29

6 Verifying and monitoring devices................................................................30

Verifying base and alias device definition..................................................................................30

Verifying status of devices per channel path...............................................................................30

Verifying Hyper Parallel Access Volumes aliases from z/OS.........................................................31

Verifying Hyper Parallel Access Volumes aliases from z/OS on z/VM...........................................32

Monitoring with MVS commands..............................................................................................33

DISPLAY command.................................................................................................................33

DEVSERV PATHS command......................................................................................................33

DEVSERV QPAV commands.....................................................................................................34

DISPLAY IOS HYPERPAV command...........................................................................................35

GTF I/O tracing.....................................................................................................................36

VM CP commands for z/VM....................................................................................................36

QUERY CU command.............................................................................................................36

QUERY DASD DETAILS command.............................................................................................37

Contents 3

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