What's needed is an industry standard on how to partition and isolate these devices, while allowing appropriate inter-system communications to occur. Then at least there is something that people can hold vendors to and drive the level of technical maturity in the right direction. The sad thing is that these companies are locked in the 1990's mindset, and unless there us a blowtorch applied to their feet they will keep on selling equipment to their customers that is technically obsolete.
The main reason they put it out is that it helps reduce their costs.
The key piece of advice is If manufacturers chose to use OTS software in their devices and vulnerabilities in OTS software can affect the safety and effectiveness of their networked devices, they have to act to keep their devices safe and effective.
Locking their devices away behind firewalls is great, but you should also provide copies of the above documentation to the vendor and ask them how they act to "keep their devices safe and effective". Make sure your legal staff are involved in asking the question, and see how quickly their advice changes.
Oh - and if you want bonus points in this - make sure that your purchasing people are across this issue and the question is asked during all procurement exercises, and that the contracts and specifications stipulate that the vendors are accountable for doing so.
Now the maximum temperature for the majority of Australian households in summer rarely if ever reaches or exceeds that. There is a large amount of the continent where the temperature exceeds that - however its very sparsely populated (you are looking at the central deserts after all) and has minimal infrastructure anyway.
For the majority of the population (i.e. major population centres on the coast) it's quite reasonable.
Unfortunately the Fire Department Standard Operating Procedure was that every fire was suspicious until proven otherwise, and the site was declared a crime scene. Consequently the Business was denied access to the site for several weeks until the situation was resolved and the remaining building could be made safe.
By that stage enough of their customers had moved to another accountancy firm and they were unable to survive with the remaining customers despite being able to completely rebuild their IT infrastructure.
I'd suggest in your example you may want to consider some form of removable media (5 GB will easily fit on a dual-layer DVD) and keep the backups in a secure safe at another family members house in case of disaster. With backups that size you could make several copies and keep them at multiple locations. Alternatively, encrypt the backups and keep a copy at work.
If you are not allergic to Microsoft products it's got a lot to recommend it:
Available on Windows, OSX & Linux
Cross-platform tools like Xamarin (which as an interesting ecosystem for cross-platform mobile apps)
That's not how Slashdot is supposed to work
With a closed source product you basically have to trust the vendor to get it right, and to patch defects in a timely manner.
OpenSSL is a classic demonstration of one of the truths of computer programming - namely that good cryptography is HARD.
I just wish that the big players who use this in their products would support the developers - and make it a better outcome for all of us who rely on this product.
Nice business model
I have to admit for all the blue ray disks I have, the included menus and bumf just makes it a less pleasant experience.
I don't know who builds in the code for these 'features' - but it makes it very difficult to justify buying legitimate media when the studios seem to put all their crapware in the way.