Right now I have a SuperMicro 24 bay 846 for my NAS, but I'm really pissed off that I can't get rails for it as I bought a really nice rack and am trying to rack everything now. I got my R900 racked and I love the rails and general quality of Dell servers. So I think I want to get a Dell to use as a storage server to match my router and hypervisor.

So far I'm eyeing the R510 12-bay. I would like more, but there doesn't seem to be a lot of used Dell high capacity servers for decent prices. I figure I could use the R510 and expand it with a PowerVault later if I see a good deal on one.

Is there another model I should be looking at? I know the R710 is much more popular, but I don't see any that utilize the whole front panel for 3.5" hotswap bays. I need a lot of storage.