Image with SP and protection

I'm sure this has been discussed, but will a normal back-up with SP back up all of my FD-ISR Pro snapshots or do you need to included all sectors?

Also, a friend has asked me if he purchases FD-ISR Rescue and gets a virus/malware etc in one of his snapshots, can this still infect the other snapshot or is that a protected area?

 

SP with its default settings (out-of-the-box) will backup and restore all FDISR snapshots (upto 10) or FDISR PC Rescue snapshots (2).
I know because I'm using SP + FDISR myself since September 2007, which is a total recovery solution, if you use it right.

The possibility that a virus infects more than one snapshot is in theory possible, but that's not a problem for me.
No malware can survive permanently on my system, unless it's a malware that infects other hardware components than my harddisks.