I have several computers to backup, i.e. if I want to use Crashplan I need their family plan which costs $150. A lot cheaper with Arq ($50) + Amazon Cloud Drive ($60) for an unlimited amount of computers with a higher level og security (yes, I know, ´you can achieve a similar degreee of security by using Crashplan, but the workflow of doing this is more complicated). The drawback is that you can not view the files, it is only for archival purposes.
I get around the Crashplan Family plan pricing by simply plugging my wife's external drive into my Mac Mini and let Crashplan do its thing. Her data doesn't need to be uploaded daily as she doesn't make many changes on her MBP. If someone has been rotating external drives to a remote location going the plug-and-play route is a lot simpler. So that may appeal to some folks.
As far as the security "issue": I think that being worried about keeping the key on the CP server is bordering on paranoia. Do you really think that what you have stored on your computer is valuable enough for a Crashplan employee to go to considerable trouble (at the risk of being arrested and losing his job) to try and access the a 448-bit key via a brute force attack? Are you trying to tell me that you know that Crashplan does not have adequate controls to monitor such internal activity on its servers? Does it not matter to you that it is generally accepted as a fact that not even the NSA has the capability to crack a 448-bit key?
I was mistaken: It's not
bordering on being paranoid; it
is paranoia. Unfortunately, there is no cure for that affliction.
As far as the workflow being more complicated with Crashplan, how much more difficult is it to enter the key than a password that unlocks the key? The answer: It is no more complicated. Store the key in 1Password or a similar encrypted database and it's as easy as one click.
Just to show that I don't think that Crashplan is the
only option worth considering, I took a moment to check out Arq.
Arq gets a thumbs-up in the Take Control book as possibly the best way to access Amazon storage. So if you want to that route Arq sounds like a winner. Here is an excerpt from Kissell's book:
Arq supports versioning, encryption and file-level deduplication, and it faithfully backs up and restores all Mac metadata (such as file ownership and permissions, access control lists, extended attributes, Finder tags, and aliases)—a rare capability among online backup tools.
(Do you see why I highly recommend the Take Control book? I sincerely hope that this discussion will result in people buying it!)
There is this caveat regarding Amazon S3 storage:
In any case, given Amazon’s pricing structure for S3 storage, if you keep more than about 160GB of data online, other services are more economical. As it turns out, even Amazon now offers a cheapU er service, called Glacier (alt.cc/ag), with prices as low as $0.01 per gigabyte per month—but the catch is that because Glacier is inU tended for longUterm storage, it can take several hours to access files when you want to restore them.
Pricing may have changed since the ebook was released, so just take it as something to check out before taking the plunge. When I was using Amazon S3 storage the pricing bordered on the arcane. Hopefully things have improved since then. I would also read user comments about Crashplan, Arq, and particularly Amazon S3 storage, unless Autoxave and my opinions are enough for you. ;-)
And seriously consider getting
Backing Up Your Mac: A Joe On Tech Guide. It's in its third edition and it is getting better with age. The chapters on local data backups, including lots of info on specific hardware and software, are as good as the Cloud section. And the guide to how to set up a bullet-proof data backup system will save you a lot of time and sleepless nights. Enter the code WINTERFEST2015 at checkout and save 25% ($2.50) on the ebook. I just checked it and the code still works. (Codes often have a daily quota so try again the following day if it isn't accepted.)
Ok, that's it for me! Seeing as how Crashplan is not paying me to market for them, this will be my last post on the subject. (Believe it or not, I don't work for Take Control Books either!) Good luck to the OP and anyone else searching for online storage service.