Beware, the Mozy client for Mac does a great job of backing up and is useless for recovery of big data sets. Web recovery is possible by downloading many .dmg files but Mozy provide no good way to merge the multiple directory structures split between the .dmgs.
I posted more details here:
http://blog.zvi.net/2010/09/mozy-reviewed-great-backup-lousy.html
I posted more details here:
http://blog.zvi.net/2010/09/mozy-reviewed-great-backup-lousy.html