Carbonite Pro Mozy Pro CRASHPLANPRO
Back up to external drives No Windows only Yes
Compatible with Linux No No Yes
Multiple backup sets No Mac, Windows only Yes
Set version retention No No Yes
Set active / away CPU usage No Yes Yes
Keep deleted files... For 30 days For 30 days Forever
Multiple file versions Past 90 days, PC only Past 30 days Unlimited
Continuous, minute-by-minute 10 minutes to 24 hrs. 12x per day max. Yes