DIY NAS or Synology DS1821+

[Enquiries]

I'm thinking about having a NAS and I'm in doubt between building DIY or buying a Synology DS1821+. The DS1823xs+ is now available, but due to the limitations/restrictions of hardware and disk updates (from the brand itself), the end of the SHR and price, it is interesting to know if it is still worth buying a DS1821+? Is the life expectancy of this equipment still long and system updates still to come (for how long)? Or should i choose to build a NAS in a Fractal Design Meshify 2 Xl case, MSI Meg x670e ace motherboard and AMD Ryzen 9 7900 non x CPU? I want the NAS to store documents, photos, videos, plex in all rooms of the house and also for 2 external accesses to the house. Later it may try/evolve (without certainty) into a home assistant and explore artificial intelligence (Big data and machine learning). This will be my first NAS. If you recommend DS1821+ what is the unofficially dual sfp+ card, double NVMe and ram that I should by? Is any difference between 32 or 64 gb of ram?

[ed]

Certainly, if your plans involve tasks like machine learning, a traditional NAS may fall short of the required processing power. In this case, opting for a robust CPU such as the Ryzen 9, a 12th or 14th-gen i5 or i7 would be a prudent choice. However, if you decide to go for a NAS alongside your custom build, Synology offers compatibility lists for RAM and NVMe options for the DS1821+. You can find a list of compatible NVMe SSDs here and compatible RAM modules here.
https://www.synology.com/en-global/compa...d_internal
https://www.synology.com/en-global/compa...egory=rams