What about lifetime of Zymkey4, HSM 4 and HSM 6

Hello everyone,

I’m currently working on an HSM solution for securing IoT as a school project. The first step is to choose an HSM solution between Zymkey 4, HSM 4 and HSM 6.
So, one criteria I’d like to talk about in my decisional matrix is the lifetime of the HSM. Like, how much time can I rely on one of them ?

Does anybody have a feedback about this for a normal to high usage in pretty decent conditions (normal humidity and heat, etc).

Thanks, any answer will help me a lot !