This document introduces the overview of vePFS file system backup features, usage constraints, notes, billing, and usage process information.

Notes

The vePFS backup feature is currently in invitation-only testing. Contact your account manager if you wish to try it.

Supported features

vePFS file system backup is a high-efficiency, low-cost data protection solution for the vePFS file system provided by Volcano Engine Cloud Backup. It supports backing up 100MB/s/TiB, performance edition, intelligent computing edition, and VPC intelligent computing edition vePFS, compatible with NFS, SMB, and Fuse protocols. You do not need to install additional agent software or plugins on the backup source; simply configure it on the console to easily back up the file system. In cases of accidental deletion, ransomware attacks, or other issues on the vePFS file system, you can restore data from cloud backup to ensure data security.

Constraints and limitations

Limit	Value
Backup source	The maximum number of backup plans that can be associated with a single backup source: 300. The maximum concurrent tasks supported by a single backup source (including backup and restore tasks): 1. The maximum number of queued tasks supported by a single backup source (including backup and restore tasks): 2.
Backup plan	The maximum number of backup plans that can be added per account per region: 300. The maximum number of backup sources associated with a single backup plan: 300.
Backup policy	The maximum number of backup policies that a single account can add within a single region: 300.
Number of inodes	The maximum total inode count of Filesets (subdirectories) selectable in a single backup: 2 billion.
Number of directories	The maximum total number of directories that can be backed up in a single backup: 100 million.

Notes

vePFS file system backup depends on the vePFS DataFlow feature. Before backing up the vePFS file system, make sure of the following:

Enable the vePFS DataFlow feature. This is a whitelist feature, so contact your account manager to request activation.

Configure DataFlow bandwidth for the vePFS file system that needs backup. For detailed steps, see Configure dataFlow bandwidth.

For restrictions and considerations on using DataFlow, see DataFlow Overview.

The first time you use Cloud Backup, cross-service authorization is required to allow CBR to access other services and resources. Follow the prompts in the console to complete the cross-service authorization.

The backup storage space for vePFS file system backups is a TOS bucket created by CBR in the same region. The bucket type is Standard.

Billing

vePFS file system side

vePFS file system backup relies on vePFS data mobility features. For details, see Data mobility overview.

TOS side

The backup storage space for vePFS file system backups is a TOS bucket. On the TOS side, storage capacity fees will be charged based on the backup data size. For details, see Storage capacity fees.

During data backup and recovery, TOS API calls generate request fees. For details, see Request Fees.

Steps

Manual backup

Automatic backup

The manual backup steps are as follows:

Enable the cloud backup service.

The cloud backup service is currently in the invitation testing phase. You can contact your account manager to enable it for free.

Create a vePFS backup source.

For detailed steps, see Create vePFS Backup Source.

Create a vePFS backup source in the Cloud Backup console. The backup source refers to the object being backed up, that is, the vePFS file system.

Manual backup.

For detailed steps, see Operation Steps.

Manually back up the backup source by creating a manual backup task. The system automatically generates the corresponding restore point.

Restore backup data.

For detailed steps, see Operation Steps.

When data restoration is needed, restore the backup data to the specified path in the original file system using the restore point corresponding to the backup time.

Cloud Backup and Recovery