After my previous single drive NAS crashed and burned, I need a replacement.
I've been told to get a dual drive NAS and configure it for RAID 1.
But I've also been told that even RAID 1 can fail if the mirror crashes, and I am better off with two separate single NAS drives with one drive a the usable drive and the other as a backup for the first. Then run a software that auto backs-up the first NAS drive to the 2nd NAS drive. This seams much more complicated than a RAID 1 system, plus how often should I tell the software to back-up? Once a day? Then should the software only look for changes between the two drives, or do a complete back-up each and every day? I would think this would wear out the drives quickly.
So should I go for a RAID 1 system, or some other back-up system? Must be network backup.