Constraints

General

• A vault can be associated with only one backup policy.
• A vault can be associated with a maximum of 256 resources.
• A maximum of 32 backup policies can be created.
• Only backups in the Available or Locked vaults can be used to restore data.
• Backups in a Deleting vault cannot be deleted.
• When Storage Disaster Recovery Service (SDRS) is used to set up disaster recovery for cloud servers, restorations can be performed at the disaster recovery site only after protection is disabled.
• Backups cannot be downloaded to a local PC or uploaded to OBS.
• A vault and its associated servers or disks must be in the same region.

Cloud Disk Backup

• Only disks in the Available or In-use state can be backed up.
• A new disk must be at least as large as the backup's source disk.

Cloud Server Backup

• A maximum of 10 shared disks can be backed up with a cloud server.
• Only backups in the Available or Locked vaults can be used to create images.
• Cloud servers support crash-consistent backup, whereas database servers support application-consistent backup in addition to crash-consistent backup.
• Images cannot be created from backups if the amount of resources associated with a server backup vault exceeds the quota.
• You are advised not to back up a server whose disk size exceeds 4 TB.

Application-Consistent Backup