Backup Software Suggestion requested

[FireBean]

I'm looking for something with the following requirements. Tell me what you think will work good.

Details:
All home PCs are using folder redirection to the the NAS (with sync) so that in the event of the laptop/desktop going belly up, I can get to the data just fine.

Looking for something that does incremental backups and that is not intrusive to the user.

Must be free and reliable.

Would be nice if it automatically removes backups after a certain amount of time.

 

[Blue Fox]

Veeam endpoint backup works pretty well. Been using it myself at home to replace WHS: Free Desktop and Laptop backup - Veeam Endpoint Backup

 

[dbwillis]

Cobian Backup might fit the bill

 

[ashman]

I second Veeam Endpoint Backup, great software and completely free.