Looking into getting that, yet looking up the expansions, those seem very limited to Synology’s own products. I get sticking with the recommended RAM, but the NVME expansions and HDD’s should be good from any brand, right?
Also, every talks about HDD’s, what about using SSD’s instead? I guess that’ll cost more? Any downsides apart from that?
People seem to like the NAS variety (Red) of Western Digital. SSDs are only good if you really really need fast storage and have an actual use for it but the price to capacity isnt there. Slots are limited in NAS so if you need to add more, you will run out soon because you used small fast storage and if you had ZFS/BTRFS in it you will need downtime when rebulding the redundancy.
Anyway, Just use NAS rated HDDs (its a solved problem already, the reason it is the standard). It has less hassle and headaches and cheap too in the long run.
When buying my HDDs, I didn’t find any reference on whether expensive NAS drives are actually more reliable. In my country (Germany), paying like 50% premium means it has to be 50% less drive failures to justify the cost. These “special” Synology drives are even more expensive.
I just bought normal enterprise drives for my (non-Synology) NAS and got myself additional backup drives I can use as spare as well, all for less money.
From my perspective the whole “NAS HDD” is mostly about marketing and certification. Just get more of cheap drives like Seagate Exos or Toshiba MG0X.
SSDs are way more expensive per TiB. Unless you need the low latency on all of your data or write a lot, HDDs are still the workhorse for storing lots of data. That’s why most keep SSDs for caching.