I've been using www.jungledisk.com... for a while now, and highly recommend it. They've recently been acquired by Rackspace and have just released v3 of their product. Heaps of cool features, I wont list them here, the site has everything you need to know!
Really easy to use, I'd definitely take a look. I pay usd$1/month for their premium service (allows access to your files over the web etc), plus usd$0.15/GB/month of storage on rackspaces cloud storage. Alternatively you can use it with Amazon's S3 storage service, but that is slightly more expensive as you have to pay for bandwidth/transfers as well as the actual space.
I'm not sure about other options but I dont hesitate suggesting this one :)
My Mozy home was without backup for a week while their support asked me to restart the program, reset something, etc. When nothing worked they did something on the server side and that seems to have "unblocked" it.
It is worth thinking about whether you want a backup service, or a virtual drive.
Mozy is a backup service. If you delete a file on your computer that is being backed up, Mozy will keep it for 30 days then delete it from your backup. This could cause problems if you (or someone else who uses your PC) accidentally deletes a file and you do not realize it for a couple months and try to restore it.
Something like Idrive is a virtual drive. You upload/backup files and they are held till you delete them from Idrive itself, regardless of whether you have it on your PC.
My preference was for Idrive, which I still use for my personal documents. Sadly though Idrive caps at 150GB or so. I have over 400gb of pictures and video, so needed to go with Mozy as my main provider as it does not have a cap.
Remember when doing any research that the key importance of any of these services is not really ease of upload, but ease of restore. Too many reviews concentrate on the former. Its like rating an insurance company on how well the cash your cheque every month, and not on whether they can pay out if there is a problem.
Dropbox is nice - $99 USD per year for 50GB storage. I've been using their free 2GB storage for a few months now.
One possible downside is that all mirrored files and folders can only reside in one master folder; can't pick and choose different folders on your computer to back up, not even with shortcuts. But Dropbox is working on implementing this.
Any of these services NZ based? I'm not particularly keen on sending the data internationally, for transfer rates reasons more than anything. Previous providers I have worked with install a WAN connection rather than use the Internet link for SLA reasons. However all these providers were immature at the time (a few years back) and the service didin;'t deliver.
Cool, thanks i'm going to sign up this arvo and set my backsup to upload between 1am and 7am during our free off peak data period.
Are there any limitations about Mozy i should know about before signing up? Any file size caps? Is the space really unlimited per computer? What if my PC has 3 hard drives? Does that count as one computer?