> I just got an error from my Time Capsule: “Time Machine completed a verification of your backups. To improve reliability Time Machine must create a new backup for you.” I went ahead and started a new backup, but how can I know that my backups are reliable?
I just got an error from my Time Capsule: “Time Machine completed a verification of your backups. To improve reliability Time Machine must create a new backup for you.” I went ahead and started a new backup, but how can I know that my backups are reliable?
Absolutely hitting Start New Backup was the right move!
All we need to do is make sure your Time Capsule has enough room to accommodate the additional information. If it doesn’t, we can archive the existing data to a separate drive.
So here’s what happened: Time Machine [italics mine] is the software that runs on your Mac, and backs up to an external drive or to a network device like a Time Capsule.
The wireless convenience of the Time Capsule comes with a tradeoff: It stores your backups in an encapsulated file called a disk image. It’s like a pretend disk, and like any disk, the file system inside it can corrupt. File systems are weak that way, which is just one of the reasons we keep a backup.
It may help to remember that a backup is just a copy of your files. You need to keep 3 copies of any file — a file doesn’t exist unless it exists in three places — and any of those copies is vulnerable.
Finally, I would recommend running Disk Utility on your Mac, just to make sure your main data drive has not itself become corrupt. Here are easy instructions!
Straight from afp548.com:
Wednesday, January 09 2008 @ 09:37 pm CST
Contributed by: macshome
A while back I posted a tip on a useful, but little known, preference setting for dealing with the Kerberos Agent dialog box. Today I’m posting another little known setting to handle an even more annoying box. The time machine “Use this disk for backup?” dialog.
The scenario is like this. Every time you plug in a different external disk time machine asks if you want to use it for backups. This is fine for the home user that can just click the No button, and get on with life. This is a giant pain in a managed deployment though as the setting is set per machine, not disk. Imagine if you have 3,000 Macs and 500 external disks that float around. That’s a lot of nag windows and a lot of chances for users to screw up. What we need is a way to set a policy that tells time machine to not ask about every disk that is plugged in. That way we can guide the users to the correct result. Here it is (one line):
defaults write com.apple.timemachine DoNotOfferNewDisksForBackup -bool YES
As with the Kerberos setting, I would push this with policy so that you don’t need to touch every Mac by hand.