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OceanStor 9000 V300R006C00 File System Feature Guide 12

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Application Scenarios

Application Scenarios

The InfoStamper feature provides advantages such as rapid execution and minimal storage space consumption. Therefore, it can be used in a variety of scenarios, including rapid data backup and recovery, continuous data protection, and remote replication.

Continuous Data Protection, Rapid Data Backup and Recovery

Snapshots occupy only a small amount of storage space. Therefore, you can configure a periodic snapshot policy to create multiple snapshots for a source directory at different points in time. If files in the source directory encounter non-physical damage such as a virus attack or mistaken data deletion or overwrite, you can use the files in a directory snapshot created before the damage to recover lost data, ensuring data security and recoverability.

If there are important points in time or critical data, you can manually create snapshots so that you can quickly recover data in the event of file damage or misoperation.

Figure 5-7  Continuous data protection as well as rapid data backup and recovery implemented by snapshots

Remote Replication

Remote replication relies on snapshot technology. After a remote replication task starts, snapshots are periodically created based on the specified interval. Then, data at the snapshot point in time is synchronized to the secondary storage system. In each synchronization, only data differences between the current snapshot and the last snapshot will be replicated. When a data synchronization between the primary and secondary directories in a remote replication task is complete, a consistency snapshot is created on the secondary storage system to record the snapshot pair relationship involved in the data synchronization. If a consistency snapshot is created on the secondary storage system for a data synchronization, that data synchronization is complete.

Figure 5-8  Remote replication scenario

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Updated: 2019-06-27

Document ID: EDOC1000122519

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