Backup vs Archive
Backups Are for Recovery and Archives Are for Keeping
Backup vs archive is a common question, and the answer comes down to purpose. A backup is a copy of current data kept so it can be restored if the original is lost or damaged. An archive is a copy of data that is no longer actively used, moved to storage where it can be kept for a long period, often for legal, financial or historical reasons.
The purpose is the real difference. A backup answers the question of how to get a site back after it breaks. An archive answers how to keep material for years and find it again when someone needs it. Both can use similar storage technology, but they are designed for different jobs.
Why an Archive Cannot Replace a Backup
Archives are built for low cost and long durability. They are often placed on slower or cheaper storage, grouped by project or date, and changed rarely. They are not designed for fast restores of a live website or database, and they usually do not hold the frequent versions that a backup schedule produces.
Backups, meanwhile, rotate. Old copies are removed as new ones are made, so the backup set stays a manageable size. Archives are meant to stay put. If you treat an archive as a backup, restoring may be slow, the copy may lack the settings you need, or the copy may be months older than the problem you are trying to fix.
Some owners use the same storage for both, with separate folders, retention rules and access settings. That can work, but each should still be planned on its own. How long backups are kept is covered in backup retention policy. Off-site cloud storage is a common home for both, as described in cloud backup.
Frequently asked questions
Is an archive a backup?
Not in the usual sense. An archive keeps data that is no longer in use, often for many years. It is generally not refreshed regularly and is not designed for quick recovery of a live site. A backup is a regularly updated copy made to restore a system after loss.
How long should an archive be kept?
It depends on the rules that apply to the data, such as legal, financial or industry requirements, and on what the owner needs to keep. Backup retention is a different question. Backups are usually kept for a window sized to how far back a recovery might need to reach, and older copies are then removed.