Retention & Storage

The Retention & Storage card (green) controls how many backups are kept on-server and lets you customise backup filenames.

Backup filename prefix — a short string prepended to every backup filename, e.g. mysite produces mysite_f12.zip. Lowercase letters, numbers, and hyphens only. Changing this prefix does not affect existing backup files.

Keep last N backups — when a new backup is created and the on-server count exceeds this limit, the oldest backup is deleted automatically. The storage estimate updates in real time as you type:

• Estimated storage needed — the retention count multiplied by the size of the most recent backup. Shown in red when it exceeds available disk space.
• Disk free space — current free space on the partition containing the backup directory. Shown with a green / amber / red traffic-light indicator.

The card also shows a live storage breakdown: backup storage used, media uploads folder size, plugins folder size, and themes folder size.

Recommended: keep 3–7 backups on-server and download at least one offsite weekly.