fpmtngal,
I agree with Mark and Jack that backing up some data to a remote server (cloud storage) decreases the risk of loss, is convenient, and can be a wise tool to include in your backup approach. And I agree with you, that for mobile photographers, syncing terabytes of raw images to cloud storage is not an effective solution for most. I did try CrashPlan for a few months, but decided it wasn't worth the hassle for me. At the time (on a 1 Mbs DSL Link) it would have taken me weeks to complete the sync. I'm an Adobe beta tester, but stopped actively participating in discussions on their forum about two years ago, when it became obvious, that their intent was to move to a cloud-only model for Lightroom. IMO, mobile DSLR RAW shooters and cloud storage are not a good marriage.
Lou's suggestion is a good one. I'd like to add that the desicants need to be periodically dried out or they will become ineffective. How will you know when they need drying out? The most common approach is to buy beads infused with a dye. The most common dyes indicate that they are still working by their color. There are two dominant types: Blue and Orange. Both turn clear when they are saturated with moisture. My understanding is that the blue dye is poisenous, but it also appears to be the most popular indicator. I don't lick my disk drives, or lenses, so that wasn't something I was concerned about 🙂
My primary motivation wasn't disk storage. Mine was that I noticed fungus growing on an interior element of a very old Canon 300mm F4 L lens I own. I ended up buying something that is more durable and convenient. Yes, it costs more, and the additional up-front cost won't be worth it for many. That said, I bought 3 Ruggard PDC24-BB boxes and am very satisfied with them.
I have no connection with B&H (except as a customer) or Ruggard. I'm just providing an opinion about a product I'm very pleased with. Well-sealed, strong, and with a very convenient gel bead recycler.
Here is the review I posted October of last year:
"Best Dry Box without the need for continuous power
I've used two of these for a couple months and have ordered a 3rd. I first experimented with an air-tight tub for half the price of this one and bulk desiccant placed in an old vitamin bottle with holes drilled in it. The inexpensive tub hinges were a molded part of the base tub. Inferior design for long-life because after many open-closes, the hinge part fails. And having to refresh the desiccant by pouring it out into a baking sheet for the oven, baking it, and returning it to the bottle is cumbersome. The cartridge with an integrated heater, that just needs to be plugged into a wall socket for 3 hours is much more convenient. Also, as you may know, the desiccant doesn't wear out. There isn't a number of recycles limitation. Yeah, the heating coil or it's connections may eventually fail, but that's a low probability potential failure for 1000 recycles. And it's much more convenient to just plug the cartridge into a wall socket than deal with a home brew solution using an oven. But these are for storage, not shipping containers."
Here's the link to reviews on the box/gel-cartridge (including mine):
https://www.bhphotovideo.com/c/product/1377861-REG/ruggard_pdc24_bbs_portable_dry_case_24.html/reviews
Dan