Those things sound like a good idea, but are flaky. Easier and a lot more dependable solution is to buy another SSD. A good setup is to do something like the following:
SSD 1: Two partitions (C & D): (C)WINDOWS & (D)Factory Recovery
SSD 2: Two partitions (F & G): (F)BACKUP (ICO OF WINDOWS & D) & (G)MEDIA
Skipped E drive because it is typically optical.
As an example my C drive has 267GB on it now. To create an image on the F drive takes less than 10 minutes. If the C drive crashes, unpacking the image from F to C takes less than 15 minutes. Make an image weekly, and the drive life will be in the thousands of years from the read/write standpoint. There is always a chance of a mechanical failure of course, but there isn't a lot of 'mechanics' to a SSD. The best way to keep any component in PC from failing is to have an UPS system to keep voltage correct, and prevent surges. Every PC should have an UPS, without fail.
Good setup. However, my setup is different:
500GB SSD1 Two partitions 250 GB ea : C: Windows 7 D: ACTIVE DATA
4TB HD1 five partitions: F: ARCHIVED DATA, G: Music H: Photos
I: Videos J: Image files of Windows 7
500GB SSD2: Exact Clone of SSD1
4TB HD2: Exact clone of HD1
Since ACTIVE DATA changes often, I backup very important files in ACTIVE DATA to a thumb drive. After the active files are no longer in use on my SSD, I transfer the files to the slower HD.
SSD1 and HD1 are on the PC and in use and therefore hardware failure is more likely on SSD1 and HD1 than SSD2 and HD2. When there is a hardware failure, a simple swap fixes the problem.
I had a case when my Acronis image file failed to restore. My Acronis 2012 is 7 years old, Acronis tech support implied that I should update Acronis by paying $29.99 for an updated Acronis program which I decline. Instead, I decided to do a clean install of windows 7 which is a long process. I decided to be "less dependent" on image files to restore my system. I still have image files but image files are not my sole method of restoration.
I was also inspired by Marie Konda to "declutter" my operating system. After the clean install and installing only the important programs that I needed, I noticed how much faster my 8 year old PC was. I then decided to clone the operating system on a second SSD so that my backup operating system is a "Marie Konda" or decluttered operating system.
Note that my decluttered operatng system is not installed on my PC. I am very careful what new programs that I add... but I have assurances that SSD2 is there when I needed it. There were many times I installed a program and the new program screwed up my PC and when I un-install the program, the PC was still not the same.
The Hot Swap hardware may have made the exterior USB hard drives obsolete. This is because data transfer is slow using USB cable compared to data transfer using the internal SATA III cable on the motherboard that is directly connected to the hot swap hardware. External USB hard drives involved plugging in the power cable and the USB cables but the Hot Swap hardware do away with any exterior cables! I still get a thrill plugging in my SSD and HD like a thumb drive. To store my SSD and HD, I purchased protective hard cases and stored them in my fire resistant and flood resistant home safe.