How to block HDD from writing?

Question

Hard disks

Guys, tell me how to block the HDD from recording. It is desirable not means of OS (access). It is necessary to record 500-800GB of information and for a long time. Moreover, in order to be able to connect this disk to other computers, and they would not be able to overwrite the information in any way. I did not see a lock at the level of iron (the device itself). Through the OS, protection is easy to remove. If you use encrypted containers, then the info itself in them is of course write-protected and whatever you want, but the container itself is in the form of a file or partition.

Answer 1

insert the disk into nas, set the permissions on nas.

Answer 2

buy something like this: Zalman ZM-VE300 - there is a Write Protect item in the menu, it helped me out more than once

Answer 3

And Nitsche, that the HDD needs to be rewritten from time to time, so as not to demagnetize?