Unfortunately the only card that can go into the integrated storage slot is a SAS 6ir modular or a S300 modular, which you already have. The SAS 6IR has no cache and only supports raid levels 0 and 1(no raid 5). In order to go with a H700, you would have to remove the current Ethernet card you have in slot 1.  [URL] page 38 
Hello, I have an R415 server with an S300 integrated RAID card and I'm looking for: Dell PERC H700 Integrated RAID Controller to install in the integrated RAID controller slot. I don't want to use the PCI-E slot right above for a RAID card because I need it for Ethernet. I would like the 1GB if possible but I think they only designed the integrated H700 card with 512MB. When I search for Dell PERC H700 Integrated RAID Controller, I get alot of results but cannot get an exact match for an R415 server. I'm concerned that if I get the wrong one, it will not fit right. Please advise on the correct H700 integrated card for an R415.
Looking for the right part number for an R415 H700 integrated raid card