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<blockquote data-quote="MacInWin" data-source="post: 1814970" data-attributes="member: 396914">It's supposed to do that, so I'm confused why it's not. The way TM works is that the first backup is full, then after that only those things which have changed since the last backup are actually copied over to the backup. Anything NOT changed is linked to in the dated backup. That technique means that an external drive can last a very long time, in most cases. When TM needs more room, it deletes the oldest backup, but it still keeps the oldest &quot;real&quot; file it can. And none of them are supposed to go to the Trash, they just get deleted by TM from the drive. Now, when a backup is deleted, it is true that all of the links in that backup would need to be deleted as well, so the count of backups can be large. But they shouldn't end up in the Trash. You said: Can you elaborate on what you mean by &quot;new backups?&quot; Are you starting a brand new backup very frequently? As I said, only the FIRST backup is normally a full backup, the rest are incremental and very small. But if you are manually creating new backups, that is going to fill an external drive pretty quickly.Also, as a general rule the backup drive should be roughly twice the size of the data on the internal drive. So if your internal has, let's say, 500GB of data, you should be using a 1TB drive at a minimum.</blockquote>

[QUOTE="MacInWin, post: 1814970, member: 396914"] It's supposed to do that, so I'm confused why it's not. The way TM works is that the first backup is full, then after that only those things which have changed since the last backup are actually copied over to the backup. Anything NOT changed is linked to in the dated backup. That technique means that an external drive can last a very long time, in most cases. When TM needs more room, it deletes the oldest backup, but it still keeps the oldest "real" file it can. And none of them are supposed to go to the Trash, they just get deleted by TM from the drive. Now, when a backup is deleted, it is true that all of the links in that backup would need to be deleted as well, so the count of backups can be large. But they shouldn't end up in the Trash. You said: Can you elaborate on what you mean by "new backups?" Are you starting a brand new backup very frequently? As I said, only the FIRST backup is normally a full backup, the rest are incremental and very small. But if you are manually creating new backups, that is going to fill an external drive pretty quickly. Also, as a general rule the backup drive should be roughly twice the size of the data on the internal drive. So if your internal has, let's say, 500GB of data, you should be using a 1TB drive at a minimum. [/QUOTE]

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