Having been involved in a digital internet business, I may be able to answer some questions for you. I have not used cloud storage because I have read what many others in digital businesses have said about their experience with cloud storage. Many of them are using cloud storage, and a lot can depend on the company you choose. I don't recall all the companies that have it. I know that one company supplies you with an EHD that you load up and send back. Others upload directly from your computer. Some have complained that it is a very slow process with some companies. One woman said that she didn't get everything uploaded when she had a crash and lost about a third of her stuff. In the digital business I have been involved with, the storage is often in the thousands of gigabytes. I don't know if anyone has had a crash and had to restore from the cloud storage, though many have cried over their fried HD or EHD, which always brings up the discussion of cloud storage. Personally I haven't used it and don't intend to. I don't know what could happen to that server where my digital files are stored. It could fry, it could get hacked, it could get a virus. I backup to EHDs and DVD. I haven't done offsite storage, but am thinking about sending DVDs of photos and other pertinent info to one of my children for safe keeping.
One potential problem that has been mentioned is the download restrictions that are being instituted by some broadband companies. If you have a HD crash, it may not be possible to download a large amount of material without going over the DL limit and incurring a very large bill for overages. Better I think to backup on your own devices, and store offsite in a safe place. Or if it all goes, just remind yourself that it was going to all burn up in a short time anyway.