Spoir

Is that something that's configurable or visible somewhere? Or is that a limitation of a single link from the controller? I did some testing and it looks like the second shelf controller isn't even doing anything even if it's the only one connected, again I think this is just because I have SATA drives in there, but I wonder which side would be responsible for the limit. Ugh, I knew I should have leaned towards SAS drives. I'm leaning towards 2.4 GBps is the limit of a cable, 4 lanes that do ~600MB/s makes sense.

Hello all, is there a reason why I'm limited to 2 GB/s for this setup? Server is an R730 with 2x E5-2680 v4 "Problem" Controller is an LSI SAS9207-8e 8-Port External HBA and is on the far-right riser that also contains a x8 NIC. All drives are heavily used / refurbished HUH728080ALE604 contained in a DS4246 with an IOM6 controller connected via a QSFP SFF-8436 to SFF-8088 cable. DiskSpeed reads the following. Current Link Speed: (ok) width (ok) ( max throughput) Maximum Link Speed: 8GT/s width x8 (7.88 GB/s max throughput) Attempted to change tunables to over 4k with negative results. Reverted change to defaults. Connected both cables to disk shelf and rebooted, but since the drives aren't SAS I really wasn't expecting anything to change (and nothing did) Is there anything else I can look into? First image shows problem array Second image shows the onboard hba that services the R730's 2.5" drives as a comparison. Output of lspci -d 1000: -vv for the problem controller is also attached. LSPCI.txt

Hello all, is there a reason why I'm limited to 2 GB/s for this setup? R730, controller is an LSI SAS9207-8e 8-Port External HBA All drives are heavily used / refurbished HUH728080ALE604 contained in a DS4246 with an IOM6 controller connected via a QSFP SFF-8436 to SFF-8088 cable. DiskSpeed reads the following. Current Link Speed: (ok) width (ok) ( max throughput) Maximum Link Speed: 8GT/s width x8 (7.88 GB/s max throughput)