The procedure for rapid recovery is as follows:

1. Obtain the VM configuration from the backup.
2. Call the NFS datastore adding API to mount the NFS datastore containing the backup data of the raw/qcow2 disk to HCI and name it X.
3. Modify the configuration, including group, run location, datastore, and NIC.
4. Call the VM creation API to create VM A based on the backup configuration. In this case, the disks of VM A are in the datastore of HCI.
5. If a BIOS file exists, call the file upload API to recover the BIOS file.
6. If a TPM file exists, call the file upload API to recover the TPM file.
7. Call the rebasebackingfile API to make each disk D of VM A point to the backup image of the NFS datastore.
8. Power on VM A.

After rapid recovery, you can choose whether to enable backup data merging by calling the corresponding API. If it is enabled:

1. Backup image data in the NFS datastore is merged into the datastore of the VM.
2. Then, VM disks no longer point to the backup images of the NFS datastore.

The procedure for backup data merging is as follows.

1. Call the backup data merging API to fetch backup data.
2. Wait for backup data fetching.
3. Query VM details and check whether the VM is changed from a rapidly-recovered VM to a non-rapidly-recovered VM.
4. Rapid recovery is complete.

Note:

1. In rapid recovery scenarios, thin provisioning must be selected for disks of the VM to be created, and the disk size must be no smaller than the logic size of the backup image.
2. The read/write permission on the NFS datastore is required. Otherwise, the NFS datastore may fail to be mounted.
3. After rapid recovery, do not forcibly unmount the NFS datastore when the VM is powered on. Otherwise, VM business may become abnormal.
4. Unmount the NFS datastore in either of the following ways:

(1)Before backup data is fetched, that is, the VM is still a rapidly-recovered VM, shut down and delete the VM before unmounting the NFS datastore.

(2)After backup data is fetched, that is, the VM becomes a non-rapidly-recovered VM, unmount the NFS datastore.