SAS Drive Problems

[SteveiJobs]

So I recently put together a new gaming PC to replace my aging Haswell rig.

 

Ryzen 7 5800X

ASRock Taichi X570

32G Trident Z RGB

1TB NVMe WD Black

Intel X540-T2 10G NIC

GTX 1070 (holdover until supply returns)

 

But the issue I am running into is with my bulk storage. I do a lot of work with servers at work and I wanted to (big brain idea) repurpose some old hardware for a big Steam Library drive. I took a PERC H310 and 2x 15K SAS drives out of a decommissioned server and put them into the final PCIe x16 slot of my motherboard.

 

The drives recognized fine and the PERC drivers are up to date but the problem is that this setup is SLOOOOOW. Like, 18 MB/s sequential reads. Is it a PCIe lane thing? The 10G NIC and RAID card should be PCIe 2.0 and I haven't seen any slowdown in games with my GPU but downloading games and transferring files is excruciating. I striped them together with Disk Management so I'm not using the onboard RAID, and reformatting to ReFS seemed to help a bit but I'm wondering if anyone has any experience with using a RAID controller in a Workstation/Gaming rig.