I agree that I would take an online backup/imaging over WAN solution over tape but certainly in a country like mine there is simply not the bandwidth and/or reliability available for these solutions.
One dis-advantage of online backups is speed.
I'd strongly recommend decent online backup over tape if possible. If you're happy with those prices then you'll get a decent solution for that kind of money, the company I work for offers a online backup service (complete with delta blocking, versioning etc) for around £3/Gig per month.
There are other cheaper options out there too. It's automatic, no need to worry about tapes and you have previous versions of your files as well as simply a point in time snapshot. You even have the option of offsite CDP, which you'll never get anywhere near with tape.
Seriously I think if you're connection is up to it you need to have a decent reason to use tape these days. I'm saying that as technical advice rather than pimping a product we sell, if you google for online data backup or similar you'll get a good snapshot of what's out there. We use software from Asigra to power the platform and I know there are some other resellers of the same in the UK (some of them big names too), it's reasonable software, has it's flaws but generally does the job and is fairly comprehensive in platform support terms.
Its not the time taken to backup that makes online not that suitable for largish backups its the time taken to get the backup info back down to your office. If this is for office DR and you are a smallish office then in the case of a proper disaster you can easily get a few PC's up and backup restored off a hard drive within a day. If you have to download a 200GB (also need to get a new internet connection/utilise someone elses)this would seriously increase the downtime.
The other problem people don't like with online backup's is essentially your giving all your data to a third party.
Who do you work for? Would be interested in discussing this a bit more.
Any decent online backup provider is storing and transmitting data encrypted and don't hold a key to recover it.
Causes more problems than it solves to be honest - the number of customers who forget the encryption key and are dismayed when they get told we simply can't get their data back - but it's very secure.
Don't get me wrong i think online backup's are a great idea but for example there are quite a few people on here that will not even use logmein (in my eyes a reputable company ) for remote adminitration because you go through a 3rd party.
I had hSo come in to demonstrate the backup service! Small world