Handy says Mozy will ship you drives if you need to restore NOW.
They will ship disks (CD/DVD), not drives...but at a cost. You can also download via their website for short order items.
Here are the details on the DVD restore option:
DVD Restore (Recommended for large restores)
When restoring large amounts of data, avoid long download times and slow connection speeds by ordering a DVD restore. MozyHome will recover your data and burn it to CDs within 2-5 business days, then ship your DVDs via FedEx Next Day delivery.
Please be aware that the current FedEx Next Day shipping rate will be charged to your credit card, as well as a $29.95 processing fee plus $0.50 per GB of data.
So if I needed my data in a hurry...it would cost me $325.95 + shipping to have them send me my data (at roughly 600GB stored on Mozy) overnight after their 2-5 day processing.
I do still use their service and it gives me an off-site backup in case of severe loss of property. That could be accomplished with a removable drive if you remember to take it to a friends or family members on a routine schedule.
Fushigi, regarding your concern #1:
You're right...a company could go away. I'd hope that there was some warning and that each customer was notified. I don't rely on them as my primary storage backup, so in the event that Mozy (since I use them) goes under, I will still have at least one backup and can begin to look for an alternate source location.
Mozy has at least some decent backing as being part of Pi and EMC under
a formed company called Decho which includes Pi with Mozy being the flagship product. They would need to remain profitable to keep their service working which makes complete sense. They've been around since 2005 which is still somewhat new. EMC acquired them for $76 million in 2007, so they must have thought there was some value in the company. For whatever it's worth, my company has now twice given out free accounts (time-based) to employees to use their service. I would think if they weren't profitable, we wouldn't be getting these. I would even pay the $5/month.
Fushigi, regarding your concern #2:
(I know this is marketing copy & paste, but relevant):
* Encryption
– Blowfish: At the beginning of the backup process, all files are locally encrypted with 448-bit Blowfish encryption.
– AES: MozyPro users have the option of supplying a personal key utilizing military–grade 256–bit AES encryption en lieu of 448–bit Blowfish encryption.
– SSL: These encrypted files are then sent via 128–bit SSL–the same encryption used in online banking–to a Decho–managed data center where they remain in their encrypted state.
* Data centers: All data centers employ state-of-the-art security and are SAS70 certified.
* Near Continuous Data Protection: Mozy automatically detects and backs up new and changed files.