Backups are automatically-created disk images of Droplets. Enabling backups for Droplets enables system-level backups at weekly or daily intervals, which provides a way to revert to an older state or create new Droplets.
We use a snapshot-based backup system that creates a point-in-time image based on the current state of a Droplet. These are called crash-consistent backups because the image retains the entirety of the disk’s data at the moment it is created.
The following process occurs on your Droplet when a backup occurs:
We create these backups in the background while the Droplet is running, so you don’t need to power down.
You can enable weekly or daily backups for Droplets. Backups are available for all Droplets, but they may not be ideal for Droplets with heavy I/O workloads, such as database servers, because disk writes have degraded performance while the backup is being created.
We retain weekly backups for four weeks and daily backups for seven days. We store backups in the same datacenter as the corresponding Droplet.
Backups occur during a backup window, which is a 4-hour window of time during which the Droplet automatically initiates a new backup. You can customize your backup window when you enable backups and view your current backup window on the Droplet’s Backups page.