How does Azure Backup differ from Azure Site Recovery?
Both Backup and Site Recovery are important to an effective disaster recovery solution as both services capture data and offer restore semantics. Backup ensures that your data is safe and recoverable while Site Recovery keeps your workloads available when/if an outage occurs.
- Backs up data on-premises and in the cloud
- Have wide variability in their acceptable Recovery point objective. VM backups usually one day while database backups as low as 15 minutes.
- Backup data is typically retained for 30 days or less. From a compliance view, data may need to be saved for years. Backup data is ideal for archiving in such instances.
- Because of a larger Recovery point objective, the amount of data a backup solution needs to process is usually much higher, which leads to a longer Recovery time objective.
Azure Site Recovery
- Coordinates virtual-machine and physical-server replication, failover, and fullback.
- DR solutions have low Recovery point objectives; DR copy can be behind by a few seconds/minutes.
- DR needs only operational recovery data, which can take hours to a day. Using DR data for long-term retention is not recommended because of the fine-grained data capture.
- Disaster recovery solutions have smaller Recovery time objectives because they are more in sync with the source.
- Remote monitor the health of machines and create customizable recovery plans.