160 GB to backup approx how large should the backup made by TM be?

Just completed my first TM backup. 160GB took up about 19GB in backup space. Does this make sense? Did it get everything? This is my first Mac. Loving it! I remember back when making a zip file on a PC was a big deal, so I'd like to make sure that I actually have a complete backup and that the file sizes make sense.

Hmm, no. It should be about the same - usually a little bigger including overhead. How are you determining the size of the backup? Is this a drive dedicated to Time Machine, or is there other stuff on the drive? If you go into Time Machine preferences, under Options, are there any excluded locations?
Matt

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