Depends on the RAID controller. If your RAID controller hooks up to one 3Gb port on the MB, you will be limited to 3Gb. If it is a PCIE card, depending on the number of PCIE lanes it uses, it might go over 3Gb. So be carefull of RAID cards that use only 1 lane. If you use software RAID (striping over volumes using Windows disk manager) you will get >3Gb. All of this is obviously based on the assumption that the drive runs a flat rate of 3Gb. The bottleneck is still the drive, not the interface (unless you can afford those already RAID configured SSDs) Hope that answers your question.

Sounds like you are running two DHCP servers on the same segment. When you switched on ICS on the XP machine, you effectively created a DHCP server. The WiFi hotspot probably has its own DHCP server. The Android X| tablet is trying to get an IP address. It gets it from the WiFi router. For it to work with the ICS it has to get an IP from the ICS DHCP server, not the WiFi hotspot, otherwise the traffic from the tablet will never reach the ICS NAT gateway (different IP class and subnets). Lots of options to get it working but simplest would probably be to "steal" an IP from the ICS server and set the tablet to use a static IP set to the stolen one and having a default gateway of the ICS server (XP box). The DNS would also have to be set to the ICS server.