I have recently built a mATX NAS which resides in my attic, it has a Gigabyte B450 motherboard with a Ryzen 1200 CPU and 16 GB DDR4. The GPU is a measly GT210 from back in the day but it gets the job done.
There are currently 4x storage devices connected to it: 1x 4 TB SATA HDD, 1x 8 TB SATA HDD, 1x10 TB external USB 3.0 HDD and the OS drive which is a Samsung 970 Pro (250 GB).
I have Gigabit fiber connected, and so my downloads are really fast, therefore I am currently using my SSD for temporary download storage. After download is completed, the files are automatically moved to the HDDs for long term storage. However, when I queue multiple downloads and they don't finish sequentially, my SSD fills up with temporary files.
I have been looking for a PCI Express adapter which would allow me to mount two PCI Express 3.0 nVME drives, using 8x PCI Express lanes. I found several products that might fit the requirements, but I'm not sure how well they perform. The last thing I want to do is having to frequently crawl up to my attic and fiddle with the NAS, so I am asking the community for advice. Have you bought/used such an adapter, and if so, what are your recommendations?
I have found the following:
JEYI iHyper-Pro m.2 X16 TO 4X NVME
I also saw this realy expensive product, which costs more than my entire NAS:
JEYI X4X4 4*NVME PCIE 3.0 GEN2 TO NVME ASMEDIA 2824
Anyway, if you know of a better, more reliable (and tested!) such product, please tell me