I was in disk health and I noticed that the disk speeds shown varied and was wondering if someone could help explain why it is what it is.
I have 12 disks installed: /sdb thru /sdm
Disks /sdb thru /sdg are connected to Sata 6.0 Gb/s ports on the mobo
Disks /sdh and /sdi are connected to a Vantec UGT-ST622 2-Channel 4-Port SATA 6Gb/s PCIe Host Card. The disks are connected to the 2 internal ports.
Disks mentioned above are all connected at 6.0 Gb/s per SMART
The remaining drives are connected a Supermicro Add-on Card AOC-USAS2-L8i which, via SAS cable, connects to a Chenbro Drive Expander CK22803. These devices are all rated for 6.0 Gb/s per port.
All the remaining drives, per SMART, are all connected at 1.5 Gb/s per port.
Now...I ordered SAS cables from monoprice.com. I used a 1m 30AWG Internal Mini SAS 36pin (SFF-8087) Male to Mini SAS 36pin (SFF-8087) Male Cable to connect the 0-3 port of the Supermicro Add-on card to the CNB1 connector of the Chenbro Expander. I then used 2x - 1m 30AWG Internal Mini SAS 36pin (SFF-8087) Male w/ Latch to SATA 7pin Female (x4) Forward Breakout Cables from the Chenbro Expander to the HDDs.
Am I missing something? Please advise.
Version: 5.0.5
Syslog Attached
FugginSyslog.txt