The Centrastor service includes a snapshot capability that is used to create point-in-time copies of files. These "previous versions" are made accessible through the User Interface (web browser) providing protection against corruption or accidental deletion.
Select a folder in the User Interface (UI). Then from the toolbar look for the "Latest Version" string and calendar icon on the right of the window. Click on the icon to reveal a new window with a timeline of available snapshots. Selecting an older version by date and time changes the view of the folder to that moment. Files or folders can then be selected and copied from this view then pasted into the current (latest version) view by using the right-click file management options while toggling between the views. That is to say, switch to the older version view, select and copy the file in question, switch back to the current view and paste the file into the target folder.
The default snapshot retention policy for all virtual portals is as follows:
- Retain daily snapshots for 7 days
- Retain weekly snapshots for 4 weeks
Customers can apply their own retention policy through a custom provisioning plan, but the above will be enforced as a set of maximum values. So a portal administrator could choose to lower these values within their own policy, but not increase them.
Snapshots are consolidated over time. At the end of a 24 hour period, defined as 00:00:00 to 23:59:59, the last snapshot created becomes the daily snapshot. Likewise at the end of a week, defined as Monday to Sunday, the last snapshot created becomes the weekly snapshot.
Snapshots are only created if there are changes to the users Cloud Drive, i.e. if files are synced (uploaded) to the portal.
Snapshots for project folders are retained according to the policy associated with the user who owns the project. Therefore, if users who collaborate on the same project have different snapshot retention policies, it is the owners policy that determines how long the snapshot will be held and not necessarily the user who actually synced the file.