By user12611518 on May 11, 2009
Along with all the other Nehalem announcements related to IB was one other IB related item which I haven't talked about yet. That's the X4239A DDR Fabric Expansion Module (FEM). It's an HCA with PCIe 2.0 I/O interfaces and dual DDR 4x IB ports for connection to the in-chasis IB fabrics.
Now the x6275 blade has a QDR HCAs built in. So what would you do with this item? After looking here, it appears that you use it with the x6270 blade to connect them to the QNEM.
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