sorry for typos here...
re crashed HD
There are free software recovery that sometimes can work to recover data from a seemingly dead hard drive....here is one but there are quite a few that might be useful. If you have most of this in a cloud somewhere then you are miles and miles ahead of a total loss which is comforting to say the least. Data recovery from a totally shot HD however can run into over a thousand dollars or more at least... It is quite shocking what they can charge you!
free on line
https://www.piriform.com/recuvahere is a CNET review to some recovery options.....
http://download.cnet.com/s/data-recovery/might be worth a try...
also I had a DELL laptop hd go bad a few months ago.....sometime it would intermittently work however..I did not have critical photos on it but I did have a lot photos downloaded from the internet as well as a lot of documents like camera instruction manual....The DEll laptop HDt was not reliable and only did work for brief periods..the giveaway which I ignored was a clicking sound the HD made that meant I should have STOPPED right there and recovered all my data files on-the-spot since when that click noise starts, things are never gonna get better...
I did bring it to a computer repair company to see what they could do but they were not gonna fiddle with it. But I did ask them that when they removed the HD what dock (toaster) did they use to work on it on their bench. The guy told me they use EZ-DOCK. This is a method a person suggested below but another brand and that was re a graphic card failure on a motherboard and was not related to the HD....meaning the HD was still OK.
Anyway, I went to Fry's and bought the single bay EZ-DOCK for 24 dollars....they do make a duel bay one for 36 dollars on Amazon...Anyway I bought the single bay one at Fry's and have since bought the double bay one on Amazon.
single bay
https://www.amazon.com/Kingwin-EZ-Dock-2-5-Inch-3-5-Inch-EZD-2535U3/dp/B00JKM0KUEtwin bay
https://www.amazon.com/Kingwin-2-5-Inch-3-5-Inch-Clone-EZD-2537U3/dp/B00N1QL9K0/ref=sr_1_fkmr0_1?s=pc&ie=UTF8&qid=1469277576&sr=1-1-fkmr0&keywords=EZ-Dock+double+babyThese are the easiest to use docks I have ever used in my life.....So I took the Dell bad hard drive and messed around with it by kind of jiggling it a bit in the slot and sure enough it would act normally for periods of time and I was then able to recover EVERYTHING on the hard drive that the repair company I brought it to could not since they were not going to sit there and jimmy that thing around to get it to work long enough to extract the information. I did go back to the store to the person who told me about the EZ-Dock they used and I told him that I was able to recover all my data and had it with me on a separate Transcend for proof.. They refunded me back the 69 dollar service fee which I guess they really did not have to but a rank amateur had done what they said they could not do....
https://www.amazon.com/Kingwin-EZ-Dock-2-5-Inch-3-5-Inch-EZD-2535U3/dp/B00JKM0KUEI am not saying this will work for you and I realize it was lucky for me to have recovered what I did in the old way one used to jiggle around the rabbit ear antenna on a TV that responded to directional shifts and even your own body mass somehow helping the reception.....There was more "touch" involved than any kind of "science".
The hard drives in most laptops are 2.5 inch and in a desktop they are 3.5 inch and this EZ-DOCK takes both sizes.
So you have a few options here ....software data recovery.....taking it to a company that might be able to cheaply recover your data or much more advanced industrial/business grade data recovery companies that will charge you an outrageous sum of money or you can do some occult jimmy jack thing like I did by doing some Apollo 13 ad hoc unconventional attempt without spending a lot of cash (EZ-DOCK) and still at least have a cool external "toaster" anyway (and I would get the double bay one)....
I normally use Transcend external hard drives since they are military grade little beasts...also reasonably priced on Amazon.
The loss of original, valued image files is a disaster of the first order especially if you have spent time tweaking the images in PhotoShop since how do you put a value on that time spent and the unique/original efforts you did..?
As one person suggested the triple back up is good but you have that cloud solution going on which is great as long as that company remains in business....
Others have suggested and I follow that advice as well that since photo cards have come down in price, simply KEEP the original photo card you shot with and never use it again other than to retrieve some precious/special "shoot" you may have done... Also thumb flash drives have come way down in price and that is another option to also copy images to as well.
Of course the other caution is probably to use no more than a 8GB or 16 GB photo cards since if you tank a 32GB card, you may have destroyed vast numbers of entire costly projects..
The amount of strategies to protect images is pretty wide ranged if you think about it with the printing of the photo probably being the BEST insurance of archiving what you have done .....
I always fear for a lot of the smart phone people these days who take photos of their kids....sends them to everybody they know on the fly....then a few months later erase them to make room for more images they snap with their smart phones....meaning when their kids are 20 years old they might not even have a shoe box of photos of themselves....
The printing out of family photos like our parents did (I am 68) with prints and slides and we did for our kids with our film cameras is still the nearly foolproof archiving method particularly true with B/W photos.. Those old glossy B/W photos will probably survive a mass extinction asteroid hit. What's nice about a photo is that you can rescan it and make another digital image file of it which is nice if you no longer have the negative....and in the 1940's-1970's most consumers just tossed those negatives in the trash!!!
The failure of a hard drive can be consequential and it is GOOD to have raised the subject here so that all of us can take a step back and examine our own practices in this regard.....The sharing of different methods to recover data then forces us to review our archival practices and encourages others to weigh in with suggestions...
I have always made sure my two grand daughters not only have the digital on line images but I do the old fashion method and make them photo albums ....and a few coffee table photo books as well.
So anyway...good luck with your effort though you are one up on most to have them stored on a server somewhere ...... Losing images on a hard drive is about as bad as messing up while shooting the original photo in the first place....
We all have been there and done that......for family photos losing images is a catastrophe on so many levels.
I think our parents had it right re making prints.....In fact I KNOW they had it right.....