• Cloud Server Backup Service

  1. Help Center
  2. Cloud Server Backup Service
  3. User Guide
  4. Service Overview
  5. Accessing and Using CSBS
  6. Constraints and Limitations

Constraints and Limitations

Note the following constraints and limitations about CSBS:

  • An ECS can be associated with only one backup policy.
  • Shared EVS disks in ECSs can be backed up.
  • CSBS supports crash-consistent backup of EVS disks on an ECS but not application-consistent backup of them.
  • CSBS does not support consistent backup of multiple ECSs.
  • CSBS supports backup and restoration of all EVS disks as a whole instead of part of the EVS disks on an ECS. In addition, CSBS does not support file- or directory-level restoration.
  • You are not advised to back up an ECS whose capacity exceeds 4 TB.