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doc-exports/docs/cbr/umn/cbr_01_0009.html
Weixi, Tan d8fd72c894 update CBR UMN 
Reviewed-by: Muller, Martin <martin.muller@t-systems.com>
Co-authored-by: Weixi, Tan <tanweixi@noreply.gitea.eco.tsi-dev.otc-service.com>
Co-committed-by: Weixi, Tan <tanweixi@noreply.gitea.eco.tsi-dev.otc-service.com>
2024-09-02 08:34:57 +00:00

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Constraints

General

  • A vault can be associated with only one backup policy.
  • A vault can be associated with only one replication policy.
  • A vault can be associated with a maximum of 256 resources.
  • A maximum of 32 backup policies and 32 replication 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 disk backups cannot be replicated to other regions.

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.
  • Backups can be replicated only to regions that have replication capabilities.
    • A backup can be replicated only when it meets all of the following conditions:
      1. It is an ECS backup.
      2. It contains system disk data.
      3. It is in the Available state.
    • Only backups can be replicated. Backup replicas cannot be replicated again but can be used to create images.
    • A backup can be replicated to multiple regions but can have only one replica in each destination region. Manual replication: A backup can be manually replicated to the destination region as long as it has no replica in that region. A backup can be manually replicated again if its replica in the destination region has been deleted.
    • Only replication-supported regions can be selected as destination regions.

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.
Parent topic: Service Overview