Cloud Backup and Recovery (CBR) provides snapshot-based backup services for cloud disks (referred to as disks), as well as elastic cloud servers and bare metal servers (referred to as servers) and supports restoring data to servers and disks using backups. In addition, CBR supports synchronizing backup data in the offline backup software OceanStor BCManager and VMware VMs to the cloud. In this way, users can manage backup data on the cloud and restore data to other servers on the cloud using the backup data. CBR maximizes the security and accuracy of user data to ensure service security.
CBR enhances data integrity and service continuity. For example, if a server or disk is faulty or a misoperation causes data loss, you can use backups to quickly restore data.
CBR uses vaults to store backups. Vaults can either be backup vaults or replication vaults.
- A backup vault is a container that stores backups of servers and disks. Backup vaults are classified into the following types:
- Server backup vault: Server backup vaults include those that only store backups of common servers and those that store backups of servers with databases. You can associate a server with a vault and bind an automatic backup or replication policy to the server. You can also replicate backups in a vault of one region to a replication vault of another region. Server backups can be used to restore server data.
- Disk backup vault: Disk backup vaults store only disk backups. You can associate a disk with a vault and bind a backup policy to the disk.
- Hybrid cloud backup vault: Hybrid cloud backup vaults store only backups synchronized from the offline backup software OceanStor BCManager and VMware VMs. You can replicate backups to a replication vault of another region and restore the backup data to other servers.
- Replication vaults store only replicas of backups. Such replicas cannot be replicated again. Replication vaults for server backups also include those that store only replicas of common backups and those that store replicas of database backups.
Backup Mechanisms of CBR
By default, CBR executes a full backup for a server or disk that has not yet been backed up using CBR, and subsequently performs incremental backups. Both full backup and incremental backup can restore data to the state at the backup point in time.
CBR automatically creates snapshots during backup and retains the latest snapshots for each disk. If a disk has been backed up, the most recently created snapshot will be automatically deleted when a new backup task is successfully executed. Only the latest snapshot is retained.
CBR works with OBS to back up data to object storage, enhancing backup data security. Figure 1 shows the CBR product architecture.
Next Article: Backup Types
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