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After writing data to an Amazon EBS volume, you can periodically create a snapshot of the volume to use as a baseline for new volumes or for data backup. If you make periodic snapshots of a volume, the snapshots are incremental so that only the blocks on the device that have changed after your last snapshot are saved in the new snapshot. Even though snapshots are saved incrementally, the snapshot deletion process is designed so that you need to retain only the most recent snapshot in order to restore the volume.
Snapshots occur asynchronously and the status of the snapshot is
until the snapshot is complete.
By default, only you can launch volumes from snapshots that you own. However, you can choose to share your snapshots with specific AWS accounts or make them public. For more information, see Sharing Snapshots.
When a snapshot is created, any AWS Marketplace product codes from the volume are propagated to the snapshot.
You can take a snapshot of an attached volume that is in use. However, snapshots only
capture data that has been written to your Amazon EBS volume at the time the snapshot command is
issued. This may exclude any data that has been cached by any applications or the operating
system. If you can pause any file writes to the volume long enough to take a snapshot, your
snapshot should be complete. However, if you can't pause all file writes to the volume, you
should unmount the volume from within the instance, issue the snapshot command, and then
remount the volume to ensure a consistent and complete snapshot. You may remount and use your volume while
the snapshot status is
To create a snapshot for Amazon EBS volumes that serve as root devices, you should stop the instance before taking the snapshot.
To unmount the volume in Linux/Unix, use the following command:
umount -d device_name
Where device_name is the device name (for example,
To unmount the volume in Windows, open Disk Management, right-click the volume to unmount, and select Change Drive Letter and Path. Select the mount point to remove, and then click Remove.
To create a snapshot using the console
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
Click Snapshots in the navigation pane.
The console displays a list of current snapshots.
Click Create Snapshot.
The Create Snapshot dialog box appears.
Select the volume to create a snapshot for and click Create.
Amazon EC2 begins creating the snapshot.