Creating a Disk from a Snapshot
Scenarios
You can create new disks from snapshots by either locating the target snapshot in the snapshot list and create a disk or specifying parameter Create from snapshot when creating a new disk.
Constraints
Item |
Description |
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Legacy snapshots |
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Standard snapshots |
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General constraints |
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You can view the snapshot upload progress in the status column. If there is a progress bar, the upload is still in progress. After the progress bar disappears, the upload is complete.
Creating an EVS Disk from a Snapshot
- Sign in to the EVS console.
- In the navigation pane on the left, choose Elastic Volume Service > Snapshots.
The Snapshots page is displayed.
- In the snapshot list, locate the target snapshot and click Create Disk in the Operation column.
- Configure the disk parameters. For details, see parameter descriptions and operations provided in Purchasing an EVS Disk.
To specify a disk capacity larger than the snapshot size, simply enter your desired capacity in the Disk Specifications area.
- Click Next.
- Confirm the configuration and click Submit.
- If you are buying a yearly/monthly disk, make the payment and click OK.
The disk list page is displayed.
- In the disk list, view the disk status.
When the disk status changes to Available, the disk is successfully created.
- Follow-up operation: A disk created from a snapshot already has partitions and file systems. You need to attach the disk to an ECS and then mount the partitions before you can use the disk.
- If you choose not to attach to server during the disk creation, attach the disk to an ECS by referring to Attaching an EVS Disk.
- If you choose to use existing partitions instead of re-initializing the disk, mount the partitions in the OS.
- In Linux, mount the partitions on desired mount points and configure auto mount at system startup. For details, see the steps for mounting partitions and configuring auto mount in Initializing a Linux Data Disk (Less Than or Equal to 2 TiB).
- In Windows, no further action is required. You can simply use the existing partitions.
- If you choose to re-initialize the disk, do as follows:
Note that re-partitioning a disk will erase all the existing data on the disk, so you are advised to use snapshots to back up the disk data first.
- In Linux, unmount the partitions, delete them (by running fdisk <disk-name>, entering d and the partition number, and entering w), and then re-initialize the disk.
- In Windows, delete the partitions (using the volume deletion tool) and then re-initialize the disk.
For details about how to initialize a disk, see Initializing EVS Data Disks.
Related Links
- To check more snapshot FAQs, see Snapshot.
- To buy new data disks, see Purchasing an EVS Disk.
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