I've currently got a small desktop server w/ 4 drives running Ubuntu and the wife wants it out of my office. I've finally found a grove on usage and want to be able to expand the server space upward as needed. I have room for a 19" deep rack, which somewhat limits my server case options to a RM41-506 or something similar. I had wanted to get the Rosewill 4500 but I don't have a rack that deep.
I understand the concepts of raid and was thinking of that in the RM41 but it just doesn't have the expandability for future proofing. From what I understand JBOD doesn't get me any type of redundancy absent having 2 JBODs and duplicating the data. I'm happy to educate myself on certain technologies, but would appreciate someone pointing me in the right direction if I'm misunderstanding something.
What would you get for the server case vs other options for increasing data storage to 100+TB in the future with some sort of data protection?