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OceanStor 9000 V300R006C00 File System Feature Guide 12

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Application Scenarios

Application Scenarios

InfoReplicator applies to the scenarios of disaster recovery, data distribution, and secondary site data access.

Disaster Recovery

In disaster recovery scenarios, data of a source system (primary system) is periodically replicated to a destination system (secondary system) for a failover in case the source system breaks down due to a natural or man-made disaster.

The source and destination systems can be deployed in the same city or in different cities. When they are deployed in the same city, the recovery point object (RPO) is in minutes. When they are deployed in different cities, the RPO is in hours. You can customize disaster recovery policies to deploy storage systems based on your disaster recovery requirements.

Normally, only the source system is accessed by applications and the destination system serves as a standby one. InfoReplicator supports the following disaster recovery scenarios:
  • One-to-one disaster recovery

    One source system and one destination system are deployed. The destination system serves as the mirror backup of the source one.

  • Many-to-one disaster recovery

    Multiple source systems and one destination system are deployed. Data in the source directories on different source systems is replicated to the destination directories on the same destination system.

Figure 6-15 and Figure 6-16 show the disaster recovery scenarios.
Figure 6-15  One-to-one disaster recovery
Figure 6-16  Many-to-one disaster recovery

Data Distribution

Data distribution means that data of one source system is periodically replicated to different destination systems. This data backup method applies to scenarios where a headquarters periodically replicates data to its branches. For example, a university campus periodically replicates class schedules and course information to its regional campuses.

InfoReplicator allows data to be replicated from one source system to a maximum of three destination systems, namely, 1 to 3 distribution.

Figure 6-17 shows the data distribution.
Figure 6-17  Data distribution

Secondary Site Data Access

Secondary site data access means that applications directly access the destination system instead of the source system during data analysis. Data analysis only accesses the destination system and therefore does not affect the access performance of the source system.

Contents of the destination system are updated after changed data is periodically synchronized from the source system. To ensure stable data access of applications during data analysis, InfoReplicator allows the applications to access the snapshot data of the destination system.

Figure 6-18 shows the secondary site data access.
Figure 6-18  Secondary site data access
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Updated: 2019-06-27

Document ID: EDOC1000122519

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