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.
Concurrent data restoration is not supported.
Auto capacity expansion does not take effect if it is enabled after the vault is full.
Cloud Disk Backup¶
Only disks in the Available or In-use state can be backed up.
Frozen disks in the retention period cannot 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.
Frozen servers in the retention period cannot be backed up.
You can back up specific disks on a server, but such a backup must be restored as a whole. File- or directory-level restoration is not supported.
When 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.
You are advised not to back up a server whose disk size exceeds 4 TB.
SFS Turbo Backup¶
Only file systems in the Available state can be backed up.
An SFS Turbo file system backup cannot be used to restore data to the original file system.