Time Machine Smart Update?

Does Mac's Time Machine have a "smart update" option like SuperDuper where only new information gets backed up instead of the entire hard drive each time? I was hoping that Time Machine within the newer Lion OS would have this option, but I haven't upgraded yet.

Thanks.

Time Machine works that way automatically. It does not do a complete backup each time unless you erase the backups and start over. It only backs up what has changed.

chscag said:

Time Machine works that way automatically. It does not do a complete backup each time unless you erase the backups and start over. It only backs up what has changed.

Click to expand...

Is that also true for the Snow Leopard version of Time Machine?

It has been true for every version of Time Machine ever since it was first introduced with Leopard.

That is essentially what time machine is already doing.

It does not back up the entire drive each time it runs. The first backup takes a while because it is a full backup if all files minus any that you have excluded (such as virtual machine files), On subsequent backups two things happen:

1. Any new or modified files are backed up.
2. For unmodified files Time Machine creates a pointer to the original file.

Edit: I really must be getting old. Multiple thread responses in the time it took me to type one. Slow down guys let the old dude catch up.