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Time machine will be useful in two situations: So when you "enter Time Machine" to retrieve a file, you can look back in history to a time when the file existed, and restore it. If you delete a file, Time Machine notes when it was deleted, but does not delete the file's previous backups, (For example, my backup for this computer currently has about a year's changes.) It keeps the old copies, up to one every hour for the current day, the most recent one for the previous 30 days,Īnd as many weekly backups as it has room for on disk for previous months.
Lacie backup wont clear old backups portable#
(Starting with OSX Lion, portable Macs can keep some snapshots on the local hard disk.) Then, every hour, Time Machine copies the files changed since the last scan to the external drive. When you first start it, Time Machine copies all of your files to the backup volume. My Time Capsule is getting old and I guess I'll be researching these devices. Instead you have to buy a "NAS" (Network Attached Storage) box.
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Unfortunately this product is no longer supported. You could back up one or more Macs to this device they shared the space on the disk. (Apple used to sell the Time Capsule, a version of the Airport Extreme wireless router that also included a big disk drive. This will help if your hard drive crashes or if you delete something and then wish you had not. If you care about the files on your computer, do more than one of the following.īuy a big cheap external drive (I like LaCie drives). See Frequently Asked Questions about Time Machine and Backup. If you do delete files, back them up first.Don't waste your time deleting a lot of little files.Do not delete system files and applications that you "think" you don't need: you might be wrong.The second most likely problem is mistakenly deleting files. If this happens, you'll feel bad: but if you have no backup, you'll feel really bad.) (Or you might drop your computer or spill a drink on it. Hard disks are built to last a few years but can crash at any time. If you have any important data that's stored on just one device, you should feel nervous. The same thing happened to me in October 2008 my 10 month old computer made a funny noise and wouldn't boot.Īll my files were lost! I got a new drive (under AppleCare warranty), restored from backup, and didn't lose a thing. Of all the bad things that could happen to your computer, a disk crash is the most likely.Ī friend had a lot of great Photoshop pictures on her hard drive, and then one day her machine would not boot: the hard disk was dead, and she had no backup.