Currently we have many 1U data-stores that are running a 10Gbps copper. Each box pretty much saturates its line (700gbps-900Gbps sustained) they all have 300GB SAS drives x8 in a raid 10 so about 1 TB total per box. (inherited this setup)
We need more storage and less rack space so the 10 servers are being removed and I am looking to put 2-2U's in their place. I am being asked to increase storage to 40TB raw and my question is related to new hardware.
If I get 2U or 4U server that has 40tb raw raid 10 each with 100GbE I assume I would still be limited by the 12Gbps raid controller. Each 2u will have 24 10k 2.4TB SAS drives.
Am I better off scaling to more servers like the current setup and not saving rack space? Or is there a way to consolidate these 10 1U servers into something that can handle 85-100Gbps sustained and not have a bottleneck by the raid controller?