Previously it was the array card 9220-8i IT mode, using two 8087 to 4 SATA connectors to connect eight hard disks, and the motherboard SATA connect five hard disks, a total of thirteen hard disks. The system speed is normal. When the array is verified, a single hard disk 100MB / S, total speed 1300MB / S +
Now I just replaced the chassis, using the HBA card 9220-8i , SFF-8087 to SFF-8643 cable and connected it to the 12Gb / s Expander backplane。
and the speed is abnormal. The single disk can reach 200MB / S at the fastest, but the entire system can only reach 420M / s.
10 disks are started, each disk Just 42M / s,
start with 5 disks, each disk is 84M / s, the total speed is limited to 420M / s
is a bug or should i change the HBA card?