NAS Data Storage | A file server built on a desktop version, (re-uploading the question, there were no worthwhile answers in the past) what is your opinion?

Question

NAS

Good day, I'll try to be brief.
The bottom line, about a year ago, I got the idea to create my own file exchange / file storage service.
I decided to start small, namely to build servers on the Desktop version. (Computer components).
And what is the question itself?
The question is:
What components are not unimportant besides drives.
Namely.
Do I need a powerful processor for a file server?
How much RAM is needed for such a server?
(A server that will simply execute write/store/read instructions)
[Sorry, I may not be using the right terms, as I'm relatively new to this stuff].
p/s
There is no need to recommend a ready-made NAS storage solution, as I wrote above, I chose the "Desktop" server assembly option.

Based on what I know, I have selected several build options for such servers.
I ask experts in this field to evaluate this option and suggest if I made a mistake in something.
In my opinion, the processor should not be very powerful, since the most important thing, as I said above, is the drives.
RAM is also not in large quantities.
________
Assembly. Option #1:
AMD A4-6300 processor.
Motherboard ASRock FM2A68M-DG3+.
RAM Kingston ValueRAM 2GB.
Aerocool Vx-350 [VX-350] power supply.
Espada FG-SA3114-4IR-01-CT01 controller (For combining drives in a RAID).

________
Assembly. Option #2:
Intel Celeron G3900 processor.
Motherboard MSI H110M PRO-VD PLUS.
RAM Samsung [M378A5244CB0-CRC] 4GB.
Aerocool Vx-350 [VX-350] power supply.
Espada FG-SA3114-4IR-01-CT01 controller (For combining drives in a RAID).
These server options are notable for their low price, and in my opinion they are suitable for this kind of use, but this is my opinion. I would like to hear yours.
All presented assembly options will use drives: Western Digital Red. Volume 1 or 2 terabytes. Each server will have: 2 or 4 terabytes of memory. The drives will be combined into a RAID array to achieve maximum read / write speed.
Based on the presented assembly options, express your opinion, and correct me if I was wrong somewhere.
P/s2
It is not necessary to say that your own file hosting will not be needed, that there are others without me. I know all this, I have taken all this into account. Just if you know, give information in technical terms.
Thank you for your attention, if I forgot to write something here, I'll write in additions;)
Good luck.