Storage disaster recovery service SDRS is a service that provides disaster recovery for services such as elastic cloud server ECS, cloud hard disk service EVS, and dedicated distributed storage service DSS. There are still many differences between disaster recovery services and backup services in protecting data security. Which description of the comparison between the two is wrong?
A. he disaster recovery system not only protects the data, but also ensures the continuity of the business, while the data backup system only protects the recoverable versions of data at different points in time
B. isaster recovery is mainly for major natural disasters such as fire and land demand, so a certain safety distance must be ensured between the production site and the disaster recovery site; backup is mainly for factors such as human mis-operation, virus infection, and logic errors, and is used for business system data Recovery and data backup are generally performed in the same data center
C. n the event of a failure (such as an earthquake, fire), the switching time of the disaster recovery system can be reduced to a few seconds, and the recovery time of the surface backup system may be several hours to dozens of hours
D. he highest level of disaster recovery can achieve RPO=0, backup can set up to 24 automatic backup strategies at different time points a day, and the data can be restored to different backup points later
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