Long term Huge Data Archiving looking best way storage and might be years before access it again.?

I think you need to re-evaluate your strategy here.

Can you think of any tech you own now which is compatible with tech from 30 years ago? it's not a reasonable expectation that 30 years from now you will be able to just plug and play.

Hundreds of GB isn't much data considering the higher end HDD's of today can hold 4, 8 and 16 TB each. Your plan should be as follows:

Work out exactly how big your data is going to be lets assume 2TB based on what you wrote. Now go out and buy three drives each big enough to hold all of the data. Copy all of your files onto each of the three disks.

Put each disk inside an anti static bag, wrap it in a cloth and then inside a ziplock bag then a 3rd bag with rice or silica packets. This will give 3 layers of protection. Static, Sunlight and Moisture. Now store each disk in a different location, this will protect from flood, and fire.

Finally every 10 years, buy new drives and complete the process over again. This means you are running hardware which is max 10 years old and the storage medium might have changed alot since then, and gotten cheaper and better resilient against the world.

If you keep it up your data should be able to last a VERY long time. Something to consider too when you are opening them up, for transfer, make sure the files can still be read by the technology available, media may need to be updated to newer codecs or file formats....Show more

Optical disc: CD/DVD (shelf life of ~20 years)
External hard drive with USB cable (shelf life of ~15? 20? years?)...Show more