Hp XP Continuous Access Software Manuel d'utilisateur télécharger pdf (Page 3)

Contents

1 Overview of HP XP Continuous Access Journal Software..................................8

XP Continuous Access Journal....................................................................................................8

Features..................................................................................................................................9

Benefits...................................................................................................................................9

Business Solutions...................................................................................................................10

2 About XP Continuous Access Journal Operations..........................................11

Functionality Overview............................................................................................................11

Journal Obtain..................................................................................................................12

Journal Copy.....................................................................................................................12

Journal Restore..................................................................................................................12

XP Continuous Access Journal Components................................................................................13

Storage Systems.................................................................................................................14

XP Continuous Access Journal Software.................................................................................14

Logical Disk Controllers.......................................................................................................14

Main and Remote Control Units (Primary Storage Systems and Secondary Storage Systems)........15

Consistency Groups...........................................................................................................15

Remote Copy Connections..................................................................................................16

Initiator Ports and RCU Target Ports.......................................................................................17

Journal Groups..................................................................................................................17

Data Volume Pairs..............................................................................................................18

Journal Volumes.................................................................................................................18

Number of Journal Volumes............................................................................................18

Specifications for Journal Volumes...................................................................................18

Restrictions on Journal Volumes.......................................................................................19

Journal Volume Areas....................................................................................................20

Host Failover Software........................................................................................................20

XP Continuous Access Journal Remote Copy Operations..............................................................21

Initial Copy Operation........................................................................................................21

Update Copy Operation.....................................................................................................22

Journal Group Operations...................................................................................................23

Journal Group Operations..............................................................................................23

Read and Write I/O Operations During XP Continuous Access Journal Operations.....................23

Read / Read Failure......................................................................................................23

Write and Update Copy / Write Failure...........................................................................24

Update Copy Failure.....................................................................................................24

Special XP Continuous Access Journal Software Write Command........................................24

Secondary Data Volume Write Option..................................................................................24

Difference Management.....................................................................................................25

Journal Processing..................................................................................................................25

Journal Processing at the Primary Storage System...................................................................25

Types of Journals...........................................................................................................26

Journal Processing at the Secondary Storage System..............................................................26

Storing Journals at the Secondary Storage System.............................................................26

Selecting and Restoring a Journal at the Secondary Storage System.....................................26

XP Continuous Access Journal Delta Resync Operation.................................................................27

Journal Obtain at XP Continuous Access Synchronous Secondary Site...........................................28

Switching the Master Journal Group of XP Continuous Access Journal............................................30

Pair Status.............................................................................................................................32

Split Types (PSUS)..............................................................................................................38

Suspend Types...................................................................................................................40

Suspension Condition.........................................................................................................41

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Hp XP Continuous Access Software Manuel d'utilisateur Page 3

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