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10.6: Verify Time Machine Backups System 10.6
Snow Leopard only hintBy pressing the 'Option' key while opening the Time Machine menu bar icon you see two new options, 'Verify Backups' and 'Browse other Time Machine Disks.'

The Second option is from 10.5 but as far as I can tell the Verify Backups option is new.

[crarko adds: I tested this, and it works as described. I didn't know about this one. I also checked on 10.5 and the Verify option is indeed absent there.]
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10.6: Verify Time Machine Backups | 10 comments | Create New Account
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10.6: Verify Time Machine Backups
Authored by: bhas on Feb 04, '11 08:07:24AM

You don't need to press the Option key while opening the menu.
It also works when you press the Option key when the menu is already open (dropped down).



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10.6: Verify Time Machine Backups
Authored by: dfbills on Feb 04, '11 09:16:59AM

I see the option, but choosing it appears to do nothing. I don't even see any activity in the console.

What does this actually do?

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-d



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10.6: Verify Time Machine Backups
Authored by: simsamsep on Feb 04, '11 12:21:27PM

What exactly is it supposed to do? Like "dfbills", I do not see anything happen when I choose the "Verify Backups" menu item. When the Time Machine disk happens to be spun down, it does not even spin up.



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10.6: Verify Time Machine Backups
Authored by: derekJAB on Feb 05, '11 05:03:37AM

Verifying doesn't work for me either on my MacBook Pro.



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10.6: Verify Time Machine Backups
Authored by: llee on Feb 04, '11 09:39:27AM

I find the "Verify Backups" menu choice confusing. I would interpret it as an option for verifying backups at the time they are executed, but, as no checkmark to indicate whether such an option is in effect can be seen when viewing the menu item, how can I determine which way the option's status is currently toggled? Read a .plist file maybe? I couldn't find anything in "/Library/Preferences/com.apple.TimeMachine.plist". Does anyone else know where it might be? Does a defaults shell command for setting the status of such an option exist?

My first edit was to change "any thing" to "anything"
My second edit was to include the explanation of both edits.

Edited on Feb 04, '11 09:46:49AM by llee



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10.6: Verify Time Machine Backups
Authored by: e_whizz on Feb 04, '11 09:11:16PM
The option is not a toggle to verify backup after they are performed during a normal hourly backup.

When you choose it, it will mount your backup (if on a Time Capsule or server), and perform a check over the most recent backup.

In the menu bar you will see Verifying Backup (xx%).

It is really quite quick. It took 6 minutes for my 300GB backup. Presumably it only checks the items most recently backedbup. Any further information from anyone as to what this is checking, and if anyone got and error during verification and if you were offered any ways to correct the error would be interesting to share.

From my system log…

5/02/11 4:00:26 PM com.apple.backupd[1507] Backup verification requested by user.
5/02/11 4:00:26 PM com.apple.backupd[1507] Attempting to mount network destination using URL: afp://charlie@TimeCapsule.local/Data
5/02/11 4:00:35 PM com.apple.backupd[1507] Mounted network destination using URL: afp://charlie@TimeCapsule.local/TimeCapsule
5/02/11 4:00:35 PM com.apple.backupd[1507] Running backup verification
5/02/11 4:00:36 PM com.apple.backupd[1507] QUICKCHECK ONLY; FILESYSTEM CLEAN
5/02/11 4:06:29 PM com.apple.backupd[1507] Backup verification passed!
5/02/11 4:06:30 PM com.apple.backupd[1507] Ejected Time Machine network volume.


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10.6: Verify Time Machine Backups
Authored by: Zali on Feb 04, '11 10:41:26PM
From Finder Help:

Verifying your backups

You can verify your backups to make sure they can be used if it ever becomes necessary to restore files.

To verify your backups:

1. Hold down the Time Machine icon in the menu bar while pressing the Option key.

2. Choose Verify Backups.

3. If you see a message that you must create a new backup, a problem has occurred that prevents Time Machine from using the existing backup. Click Start New Backup to create a new backup and remove the existing backup history (which removes your old backup).

If you click Back Up Later, you’ll be prompted with the dialog again in 24 hours. Time Machine won’t perform backups during this time.


To view the dialog at any time, hold down the Time Machine icon in the Dock and choose Back Up Now.

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10.6: Verify Time Machine Backups
Authored by: joekewe on Feb 08, '11 06:08:14PM
From a web search, it looks like "Verify Time Machine Backup" should be called "Verify Time Capsule" backup. My system log shows that I attempted to verify my Time Machine backup:

com.apple.backupd[70595]: Backup verification requested by user.

but (I believe) because it is a locally mounted volume, it didn't do anything and didn't leave any more entries in the log. From this older knowledgeable article, http://support.apple.com/kb/HT4076 it looks like Verify Time Machine was added when Time Capsule was having trouble.

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10.6: Verify Time Machine Backups
Authored by: Zali on Feb 08, '11 11:17:01PM
Once again, from Finder Help:

If you see a message that you must create a new backup, a problem has occurred that prevents Time Machine from using the existing backup.

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10.6: Verify Time Machine Backups
Authored by: asmeurer on Feb 21, '11 01:23:46PM

I don't know why Apple has to hide these options. The "Browse Other Time Machine Disks" one is particularly useful—and hard to find because of this.



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