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HCS 6.5 supports VM backup and disk backup. The backup function is provided in the form of cloud services. Users can apply for backup resources as required and configure backup policies.
l Cloud Server Backup Service (CSBS)
The CSBS service creates a backup for the ECS (including the configuration specifications of the ECS and data on system disks and data disks) and uses the backup to restore ECS service data. Users can apply for the service easily. They only need to specify backup objects, backup policies, and (optional) replication policies. The system will create backup service instances automatically. Based on their own needs, users can also adjust the service instances. The service ensures the security and correctness of user data and ensures service security.
l Volume Backup Service (VBS)
The VBS service creates a backup for the EVS disk and uses backup data to restore the EVS disk. Users can apply for the service easily. They only need to specify backup objects, backup policies, and (optional) replication policies. The system will create backup service instances automatically. Based on their own needs, users can also adjust the service instances. The service ensures the security and correctness of user data and ensures service security.
Key technologies:
l Automated backup
In addition to manual backup, tenants can also select automatic scheduling in the backup policy. Then backup jobs are automated according to the scheduling policy.
l Permanent incremental backup
The storage snapshot and snapshot comparison technologies enable data blocks to be obtained directly from the production storage, eliminating the need for deploying a backup proxy in protected VMs reducing the backup impacts on user services, and simplifying backup solution deployment and maintenance.
For each backup job, the storage system creates a snapshot for a destination VM. For the first backup job, eBackup performs a full backup using snapshot data; for all subsequent backup jobs, eBackup performs only incremental backups (namely, backs up only data changes between the current data and the last snapshot data). After a backup job is complete, eBackup deletes earlier VM volume snapshots, retaining only the latest snapshot for comparing the differences with the snapshot to be generated in the next backup job.
l Automated recovery
The aim of recovery is to recover data to a pre-fault point in time using backups, preventing system breakdown due to faults such as mis-deletion. Data can be restored to the original ECS or original volume, to a specified ECS or new volume, or to a new EVS disk created by using the EVS disk backup.
l Two-level backup
Data is backed up to the local storage and then replicated to the remote storage. That is, backups are stored at both local and remote sites. The local site performs local backup according to the tenant-configured backup policy and the remote site performs remote replication according to the tenant-configured replication policy.
Hope that it can help you!
