I don’t have an opinion about SDD discs, I have not digged into that yet, but I do have a strong opinion about mirrored discs.
I don’t think there is anything complex about setting up a mirrored disc. It’s just an identical copy of the main disc.
You might have a point when it comes to other RAID configurations, combined with specific RAID controllers.
These days the build-in Mobo SATA controllers allow you to mirror each disc, thereby providing 100% secured content.
We have about 15 machines in our building, and not a year goes by when a disc fails somewhere. Be it a OS disc or data disc, it never caused us downtime or loss of content. Just replace the broken disc, whenever you have the time for it.
And even if it would add some level of complexity, I gladly sacrifice it in favor for never having to worry that a machine goes down or that I lose content.
Just my 2 cents …
Fredo