Intelligent differential backup?

[Cuffz]

Looking for a backup program that has the following intelligence...
(Windows 7)

For example in a usual differential backup:

-A file on the source is moved to another folder
- User runs backup
Software deletes the file on the destination folder, spends time making a new copy of the file in the new location.

Intelligent differential backup:

- A file on the source is moved to another folder
- User runs backup
- Software detects that a copy of the folder already exists somewhere on the destination, it moves this to the new location rather than spending time to make a new copy.

... Currently my backup processes waste a lot of disk access and cpu cycles... needlessly creating 1000s of new copies.

[r_j_k_p]

I am looking for something very similar.
In my example:

Normal HDD :
Folder 1:
file 1
file 2
file 3
file 4

Backup HDD(after copy):
Folder 1:
file 1
file 2
file 3
file 4


say a month or two has elapsed, and now on my normal HDD, file 2 has been deleted as i don't need it anymore, and an extra file 5 has been added...
i need some software that will intelligently detect that file 1, 3, 4 are already present and correct so they don't need to copy them again, but also to detect that file 2 is no longer needed so is deleted on the backup HDD and also to add file 5.

I am currenly doing backups on 2Tb worth of data, and wasting lots of time and HDD condition.

Any help is more than welcome.

Thanks

[aidanjt]

DeltaCopy sounds like what you're after.

[spoon_]

Ooh data de-dup and block based copy are awesome, not on Windows though!

Thanks Microsoft for sticking with NTFS for the 17th year in a row...


I believe Genie Timeline has something what you after to offer.