Originally Posted by JaapJan
Why is a RAID 1 NOT a back up, it seems to me as a full copy of the "master" drive?.
Because there are more reasons for a backup than protecting against a lost drive...

Virus', accidentally deleted files, incorrectly modified files, bulk modified files, bulk deleted files, enclosure failures...to name but a few.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).