Not true. They may have multiple servers but many do not maintain multiple sites. Them losing data IS an issue. You talk about hacking. 99,9999999% of the junk on cloud storage isn't worth a plug nickle to a hacker. But the insertion of one small piece of malicious script that then is backed to the various backup servers is all it takes. At a specific time or on a specific command ALL of the servers get erased. DATA GONE!So what happens if the cloud storage site has a fire, hit by a tornado, a flood. Same difference. The cloud is a fools paradise in my opinion. Too many things could happen, even simple things like they go out of business.There are plenty of fireproof and waterproof NAS boxes you can get such as this one:
So the $100,0000 question - Do you currently have your drives in a fireproof/waterproof storage box??? Even then I can tell you from experience on the scene of many house/business fires, tornadoes, floods, etc. that it is highly likely that even my big, heavy safe, is questionable as to keeping the contents safe. That's why there is always a drive in the briefcase along with other important papers that I can grab in hurry as I head out the door.
If you want true secure off site storage you invest in true multi site, redundant backup, disaster proof backup solutions. The same ones that the financial institutions and big businesses use since they can't afford to have a data loss event.
Companies that deal in cloud storage have multiple storage sites and redundancies. Them losing data is not an issue. The issue is hacking. No company no matter how big or who they are can get hacked. Look at Yahoo many years ago and never mind all the companies that get hacked but never make it to the public's ears. Cloud storage is not bad if used correctly but I would never put anything that you wouldn't want stolen on there.