Hp 3PAR Application Software Suite for Oracle User Manual download pdf (Page 124)

How Remote Copy Works

A Remote Copy configuration typically involves two HP 3PAR StoreServ Storage systems: a local

or primary system and a remote or secondary system. The synchronization between the local and

remote systems can be either synchronous or asynchronous mode.

In synchronous mode, Oracle database virtual volumes between the local and remote HP 3PAR

StoreServ Storage systems are always in synchronization. However, the copy of the Oracle database

on the remote server is considered inconsistent and can be only used for crash recovery. Recovery

Manager for Oracle can be used to create a consistent snapshot image (Virtual Copy) of the

database virtual volumes on the local and remote HP 3PAR StoreServ Storage systems. The database

is placed in backup mode prior to the snapshot being taken. See Figure 4 (page 124)

Figure 4 Synchronous Mode Remote Copy Configuration

In asynchronous mode, Recovery Manager for Oracle can help to initiate synchronization between

the database virtual volumes between two HP 3PAR StoreServ Storage systems and create a

consistent database Virtual Copy on the local and remote systems. See Figure 5 (page 125).

124 Using Remote Copy with Recovery Manager

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Hp 3PAR Application Software Suite for Oracle User Manual Page 124