Help Center> Cloud Server Backup Service> User Guide (Paris and Amsterdam Regions) > Service Overview> Accessing and Using CSBS> Constraints and Limitations

Updated on 2022-02-22 GMT+08:00

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Constraints and Limitations

Note the following constraints and limitations about CSBS:

An ECS can be associated with only one backup policy.
An ECS with shared EVS disks cannot be backed up using CSBS.
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.

Parent topic: Accessing and Using CSBS

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