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Backups: Trust but Verify

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It’s easy to assume your backup app—whether it’s Time Machine, Carbon Copy Cloner, Backblaze, Retrospect, or something else—is quietly doing its job. But it’s possible for a bug to corrupt backups or for a destination disk to fail silently, such that you can’t restore backed-up data. We’ve seen this happen! For peace of mind, set a quarterly reminder to verify your backups. Test by restoring a few files and opening them: for Time Machine, enter Time Machine and restore a few important files; for a clone, mount it and open files; for a cloud backup, perform a small restore. Backup failures aren’t common, but since backups are your lifeline after a catastrophe, it’s worth confirming they work.

(Featured image by iStock.com/Andreus)

Social Media: Don’t just trust your backups—verify them. Each quarter, restore a few files from Time Machine, your clone, or your cloud backup, and make sure they open correctly. Silent failures happen; test restores prevent nasty surprises.

Time Machine Now Offers Daily and Weekly Frequencies

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Since its inception, Time Machine has backed up on an hourly schedule. It then keeps hourly backups for the previous 24 hours, daily backups for the last month, and weekly backups back to the start of the backup. Once free space on the backup drive gets low, Time Machine deletes older backups to make room for new ones, always maintaining at least one copy of every backed-up file. The traditional hourly backups are usually fine, but starting in macOS 13 Ventura, Apple lets you choose a daily or weekly schedule instead. One of those might be useful for Macs that are turned on infrequently or where very little important data changes. It also might reduce resource usage and how much data Time Machine backs up. Most people shouldn’t need to change the backup frequency, but if you’ve always wanted to, now you can.

(Featured image based on an original by iStock.com/STILLFX)

Social Media: Has Time Machine’s hourly backup frequency been problematic for you? Starting in macOS 13 Ventura, you can instead choose a daily or weekly backup schedule.

Make Sure to Test Your Backup System with Occasional Restores

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Did you know that the word for the irrational fear of Friday the 13th is paraskevidekatriaphobia? Neither did we, but what that supposedly unlucky day is good for—whenever it rolls around—is reminding us to test our backup systems. If something does go wrong, backups can save your bacon, but only if they’re actually working. So on Friday the 13th this month, take a few minutes to make sure you can restore files from Time Machine, see if you can boot from your bootable duplicate, and generally verify that your data really is being backed up successfully. And if you’ve already missed the 13th, today is a fine day to make up for it with a quick test.

(Featured image by Adam Engst)

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