[Silhouette]

At the office, we tend to have frequently scheduled sync of any important data from personal devices to a server, and other important data is centrally hosted on servers anyway. Servers have RAID set up. So far none of that is really a true back-up, but it gives us some resilience against immediate hardware failure.

The true back-up is dailies (or on demand if appropriate) from the server to an off-site backup service. All data already encrypted on our side before it leaves the building. We take some measures to ensure consistent snapshots, including for tricky applications like databases and source control repositories where a filesystem-level snapshot may be insufficiently robust.