Backup Storage

Backup storage is storage for storing virtual machine disk backups, mounted to the platform through external mounting. Currently mainly supports NFS storage.

Disk backup is a backup of a virtual machine disk's snapshot at a certain point in time. Host backup is a collection of disk backups of all disks of a virtual machine.

The method to obtain disk backup is: first snapshot the virtual machine disk, then export the snapshot data as a qcow2 file, which is the disk's backup.

Currently only supports full disk backup.

Both snapshots and backups save the state of virtual machine disks at a certain point in time, and can restore disks at a specified point in time. However, the differences between snapshots and backups are as follows:

	Snapshot	Backup
Storage Location	Inside Block Storage	Independent storage outside block storage, such as NFS or object storage
Retention Time	Short	Long
Recovery Time	Short	Long
Export/Import	Not Supported	Supported

📄️ Create Backup Storage

Starting from 3.11, backup storage supports the following network storage as backup storage: