[clug] Deduping backups from more than one workstation?

[Michael Still]

Hi.

I have a backup scheme which involves my workstations rsyncing
themselves to a server. At the moment there is one directory per
workstation. However, this is kind of painful because the workstations
have many duplicate files (source repositories, OS files, etc).

So, how do other people solve this problem? Is there some fancy pants
filesystem which can handle having duplicates of many files while only
storing them once?

Thanks,
Mikal