How to take a snapshot of a volume
A volume snapshot is a copy of a storage volume (root disk or data disk), captured at a point in time.
Volume snapshots are different from virtual machine snapshots. See How to take a snapshot of a VM.
Volume snapshots can be taken manually as described in this document, or automatically at scheduled intervals: see How to setup a recurring snapshot of a volume.
Each volume snapshot consumes an amount of space equal to the original volume size. Because of this, volume snapshots are not a cost effective way of storing multiple backups of a volume. The most efficient approach is to use recurring snapshots, for which only the most recent (one or two) snapshots are retained, and set the snapshot frequency to daily or hourly as required.
To make use of the data in a snapshot, you can convert it to a volume, and attach the volume to a VM in order to access the stored data.
A snapshot can be converted to a template, which can be used to create VMs. See How to create a template from a volume snapshot.
Clickin the left-hand menu. Click the name of the volume you wish to snapshot.
Alternatively, you can start from the list of virtual machines (clickin the left-hand menu), click the name of a virtual machine, and then click the button, which shows the root disk and any additional data disks for that VM.
In the volume's . The following dialog should appear:sub-panel, click the button in the task bar:
Use thetext box to provide an optional name. If the name box is left blank then the snapshot will be named with the volume name plus a date and time string.
Clickto take the VM snapshot. You don't need to wait on this page for the process to complete. The creation process will usually take some minutes to complete, depending on the data size of the volume.
A notification box will appear when the snapshot creation is complete.
Click the name of a volume. Click the .button in the Details sub-panel:
A list of snapshots for this volume will be displayed:
Alternatively, you can see a list of all the snapshots in your VDC account by clickingin the left-hand menu, then use the drop-down list to select .
Note: The snapshot list contains manual snapshots (see 'MANUAL' in the Interval Type column) and also snapshots generated by any recurring snapshot process.
A new snapshot will appear in the list of snapshots with the state ‘BackingUp’, otherwise a successful state will be ‘BackedUp’, with a green indicator dot.
Click the name of a snapshot to show itssub-panel:
There is a task bar containing buttons for three operations:
: Templates that you create will appear in the 'Mine' category of the panel, and in the 'My Templates' category when you deploy a new virtual machine. For details, see How to create a template from a volume snapshot.
: The volume that you create will appear in the list of volumes in the panel and the contents of the volume can be accessed by using to attach the volume to a VM. For more details, see How to add a volume to your VM.
: Note that deleted volume snapshots cannot be recovered.