On: I nearly lost the Lightroom catalog with of all my photos

[rcarmo]

I haven’t had any issues with my Synology NAS yet, but I did have to stop using my iMac due to recurring _local_ data corruption errors: https://taoofmac.com/space/blog/2021/08/08/1600

I wonder if the OP also has a Fusion drive - merely reading off a corrupt SSD cache or bad RAM would explain some of the damage.