thanks so much guys, its up and running

info for all : i live in Egypt

@marcinozga , thanks for your suggestion , i'm starting to think about one big server instead of two.

@Pete-S , unfortunately, supermicro is not available here and the shipping cost for a new server is massive.

@dave_c , the cost to buy something from outside the country is tough, we cant do that right now.

@bnrstnr , the r510 is the only server i can find here with 3.5 slots, either that or older,
and we can't import from outside the country these days.

learning about Gluster and Ceph and which one is better for my needs to deploy

@DustinB3403 , is this question for me?
if it is, to me a proper storage server would be an enterprise server hardware with a stable server os, physical or virtual (i too prefer virtual), with a lot of storage features :D, and a scalable storage system for future expansion