PCIe x8 speed means extends motherboard internal PCIe bus transparently to external storage.
Performance is no longer restricted by cable technology.
*In near future, PCIe 2nd generation technology will provide double performance than 1st generation which means ExaSAN can provide double speed in certain condition.
External PCIe HBA Card¡G ExaRAID HD includes unique PCIe HBA card, two kinds of model PCIe x4 and PCIe x8, which provides respectively 10Gb and 20Gb higher bandwidths.