I also have multiple SSD back ups. My NAS, or a HDD in it, has never failed since purchase, some years ago. Synology 4 Bay, Seagate Ironwolf Pro HDD drives. I also have an old desktop computer set up on a WiFi power switch that I can control remotely. The same data is held on an SSD in that PC, and there is also a HDD in that PC that holds the same data. Then, to be paranoid about it, I have an SSD attached to the router at that location. If the NAS dies, I have the PC and / or the SSD and HDD in it. If the PC dies, I have the NAS. If both die, I have the SSD attached to the router. I just VPN into the router. So, at that location, I have four storage devices for data back up. I have my computer and two SSD's here as back ups at the second location. I have a cloud subscription. I contacted the cloud company and they stated all my data would not be held in just one data center, so should that data center burn to the ground, they still have my data in a similar fashion to parity. Yes, the PC shuts down incorrectly, but I've never had a problem. So, you are somewhat correct, I haven't tried it swapping out a HDD to test RAID / Parity, but with 4 Bays, I think I should be good. Likewise, because my Synology NAS has never failed, I have no experience of buying a new one and data loss. I would be surprised if the Synology company didn't have some type of compatibility between models, but happy to learn more if you know. Here's a youtube video from the first page of a Google search.
Create an account or sign in to comment