How to Test a Backup Restore Before You Need It

Setting up backups feels like finishing the job. It is actually only half of it. Backups fail quietly in ways nobody notices until the day they are needed: the backup stopped running months ago, an important folder was never included, the encryption password was lost, or restoring everything takes three days when you can only afford one.

A restore test, sometimes called a restore drill, finds these problems while they are still harmless. It takes an hour or two a few times a year.

Why backups fail when you need them

• The job stopped running. A password changed, a drive filled up or a subscription lapsed, and the warning emails went to an unread inbox.
• Something important was never selected. A new folder, a second computer, the accounting database or the website was not in the backup plan.
• Files are there but unusable. They are corrupted, or a database was copied while it was being written to.
• Nobody can get in. The backup account login or encryption key lived in one person's head.
• Recovery is too slow. Downloading everything from the cloud over an ordinary internet connection can take far longer than anyone expected.

The quick drill: every one to three months

1. Confirm the backups are running

Open your backup tool or dashboard and check the date of the last successful backup for every computer and system. Anything older than your schedule means something is wrong.

2. Pick a few files at random

Choose three to five files from different places: a recent document, an older spreadsheet, a photo, something from a shared folder. Randomness matters, because testing the same file every time proves very little.

3. Restore them to a different location

Restore the files to a new folder rather than overwriting the originals. This avoids accidents and makes comparison easy.

4. Open each one

A restored file is only useful if it opens correctly. Open each document, spreadsheet and image and make sure the content looks right.

5. Try restoring an older version

Pick a file and restore the version from a week or a month ago. Version history is what saves you from accidental edits, deletions and ransomware, so make sure it actually works.

The deeper drill: once a year

Once a year, practice a bigger recovery that resembles a real disaster.

• Restore an entire folder set or a full computer to a spare machine or a separate location.
• Restore critical business systems, such as accounting data or a customer database, and confirm the application can open them.
• Restore your website to a test location, if you run one. Our guide to backing up a website explains what should be in that backup.
• Time the whole process, from starting the restore to being able to work again.

The timing answers a crucial question: how long could your organization be without its data? If the answer is too long, you may need a faster local backup, a different service plan or a written priority order for what to restore first.

Check the human side too

A restore depends on people as much as technology. During your annual drill, also confirm:

• At least two people know how to sign in to the backup system.
• Backup passwords and encryption keys are stored securely somewhere other than the systems being backed up, such as a password manager with emergency access or a sealed paper copy.
• Written recovery steps exist, short and clear enough for someone stressed to follow.
• Contact details for whoever helps with your technology are written down on paper.

Keep a simple restore log

Record each test in a shared document. A short entry is enough:

• Date of the test and who ran it.
• What was restored and from which backup.
• Whether everything opened correctly.
• How long it took.
• Problems found and what was done to fix them.

Over time, this log becomes proof that your backups work, which is valuable for insurance questions, board reviews and your own peace of mind.

When a test fails

A failed test is good news in disguise, because you found the problem before a real emergency did. Fix the cause right away, whether it is a missing folder, an expired subscription or a lost password, then run the test again to confirm.

If you have not set up backups yet, start with our guide to the 3-2-1 backup rule, then put your first restore test on the calendar for the following month. And if your "backup" is really a synced folder, read why cloud sync is not a backup before you rely on it.