Does VBS support system disk restoration?
Currently, VBS supports system disk restoration.
When restoring system disk data, make sure that the cloud server attached to the system disk is shut down.
You can also create an EVS through a system disk backup. However, the created EVS can only be used as a data disk for the time being.
Can I restore an EVS across AZs?
Yes.
VBS allows you to use the generated backup to create an EVS across AZs for data restoration. For specific operations, please see Cross-AZ Migration of EVS Data.
To restore across AZs, make sure that the new EVS AZ is different from the source EVS AZ in the EVS creation window. Moreover, the disk type, capacity, disk encryption, and other attributes are the same as those of the source EVS, which cannot be modified.
Do I need to stop the cloud server when using VBS to restore data?
Yes.
The steps to restore data using VBS are as follows:
1. First, you need to ensure that the cloud server attached to the EVS to restore data is shut down.
2. Restore the EVS with backups.
3. After restoration, start the cloud server again and use it.
Can I use backups to restore data after an EVS is changed or expanded?
Yes.
However, when an EVS is expanded, the data used for backup and restoration is that before the change, the data before the expansion.
After restoration, the data and file system configuration will be restored to the status before the expansion. Please make sure to perform disk partition expansion and file system operations again on the expanded capacity.
For specific operations, please see Expanding an EVS - Overview.
How do I restore the data on the original cloud server data disk to a newly created cloud server using VBS?
To restore the data on the original cloud server data disk to a newly created cloud server using VBS, please follow the steps below. However, please note that these steps may not guarantee data consistency.
1. Create an EVS backup for the data disk of the original cloud server. For specific operations, see Creating an EVS Backup.
2. Create an EVS using the created EVS backups. For specific operations, see Using Backups to Create an EVS.
3. Attach the newly created EVS to the new cloud server and use it as a data disk. For specific operations, see Attaching an EVS.
Can I terminate data restoration in progress?
No. Currently, VBS cannot terminate a restoration task in progress.
If you have specific requirements, feel free to reach out to our product pre-sales manager or solution manager through customer service phone lines and other means. We will tailor suitable solutions for you based on your business needs.
What should I do if an EVS created by backups cannot be attached?
l Issue Description
Users may encounter a scenario where an EVS created by backups is attached to the same cloud server, but the attaching process ultimately fails after the mount command is executed within the system. A possible reason is that the superblock of the EVS (an XFS type file system) stores the unique identification (UUID) of the file system. When the EVS is attached to the cloud server, the attaching fails because the cloud server has several same UUIDs.
l Solution: Log in to the cloud server to attach the EVS. Follow the two methods below for handling in the cloud server.
¡ Use the control parameters without a UUID when attaching the EVS: Execute the mount -o nouuid /dev/device name/mount path command.
¡ Re-assign the UUID: Execute the xfs_admin -U generate /dev/device name command.
Can I use the original backup copy on a system disk for restoration after reinstalling my operating system?
l The data cannot be directly restored to the original disk.
l You can use the backup copy to create a data disk.
After creating an EVS (data disk) using the original backup copy on a system disk, attach the new data disk to the cloud server and log in to the cloud server to view the data on the original system disk. For details, see Using Backups to Create an EVS.