Hp StorageWorks XP Remote Web Console Software Manual de usuario descargar pdf (Pagina 42)

TCz Synchronous, URz primary site URz secondary site

primary host

master JNL VOL

ournal obtain

secondary host

secondary subsystem

secondary

dataVOL

restore JNL VOL

ournal restore

R-VOL

primary data VOL

master JNL VOL

ournal obtain

primary subsystem

M-VOL

primary data VOL

TCz Synchronous

secondary site

journal

copy

Copying by TCz

Synchronous

Write

Data flow

secondary

host

secondary subsystem

Journal data flow

URz pair for delta resync operation

Figure 7 Delta Resync Setting in 3DC Multi-target Conﬁguration (Before Failure Occurs)

As shown in Figure 7 on page 42 a URz pair created with the delta resync option is deﬁned as a

pair but no copy operation is performed (Hold status). Actual copy operation will not be performed

until when the failure occurs and delta resync operation is performed. There are several requirements

to create a URz pair for delta resync operation, such as you need to specify the unused mirror ID. For

detailed information about the requirements of creating a URz pair for delta resync operation, see

“Requirements for Creating URz Pair for Delta Resync Operation” on page 96.

For the information about the delta resync operation that will be performed when a failure occurs in the

conﬁguration shown in Figure 7 on page 42 see “Switching the Master Journal Group of URz”onpage43.

Overview of Universal Replicator Operations

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Hp StorageWorks XP Remote Web Console Software Manual de usuario Pagina 42