It's sort of like that extra disk in your raid 1 setup at home. Compared to a single SSD the performance improvement doesn't really show (for desktop loads)...

It's sort of like that extra disk in your raid 1 setup at home. Compared to a single SSD the performance improvement doesn't really show (for desktop loads)... However when things come to a rare (but somewhat inevitable) and screeching halt and that mirror has one of the copies shatter beyond recognition... that's when the doubled price proves that it was worth it. Such a dashboard would invariably also add load and complexity (both failure points) to the system, but outwardly most users would be unaware of their existence.