Leo,
There's a new version of the MXI BIOS compatibility software that supports Windows 10. It won't help with your second OS, but hopefully helps with Windows.
There's not really a faster way to link to that type of chassis with those cards. The cards are legacy PCI, which is good for around 100 MB/s. The PCIe cable and host card are gen 1 x1 PCIe, which is limited to around 200 MB/s. Using a separate PCIe card per chassis may get you an improvement of 10-20% over using 2 chassis with 1 PCIe card, but nothing more substantial. The real limit is the architecture of the cards and backplane. The backplane shares the bandwidth across all the cards, so when they're all running simultaneously then they're fighting for time on the backplane bus. You could improve things by spreading the cards among more chassis to ease the backplane bottleneck, but that's about it.
- Robert
