Dell continues to do well in the server market. And a discounted server with no name could be the end of a company which is why folk rarely go cheap on these.
But my real thought is this. If the current server is working, why change it?
Buried in your post is this -> "I need to know every daily transaction and the data should be saved and shared."
That's not a server issue but a software one.
I'm a business man owning a super market and recently I started another one. I am looking to replace the old server and looking to upgrade with new one for fast access. I heard that there is a lot of advancement in servers and what kind of it is? I need to know every daily transaction and the data should be saved and shared. I don't have much idea on servers and got some suggestions from my friends like to install Intel Xeon W3520 and so and so servers. Also, heard about few companies which provides servers at affordable price. Does anyone of you have idea about such companies? Suggestions required.