I use a HP-N54L Proliant server with stablebit drive extender and stablebit pool to be able to rebuild drives that fail and span drive. (qty 4 x 4 tb Hitachi coolspins). Plus a boot drive. When it fails I can then attst if it works as advertised!
But nothing is fool or fail proof. They only way is multiple backups methodology but even this misses.
Best advice.....if it's important make a backup, then another incrementing each other. I've actually changed HDD platters on old 286/386 system in the RAAF HTS test-stations. Big job (clean rooms) and prone to fail...let alone the new smaller high density platters.
Its a damn problem even today...cloud backup (or NAS cloud) is IMHO one of the best.
FWIW...remember if its too important to be lost then develop a backup procedure.
Brendan
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