Modular Design - IBM x3850 X6 Planning And Implementation Manual

2.1 Modular design

IBM X6 rack family consists of the new flagship servers of the IBM x86 server family:
IBM System x3850 X6: 4U rack-optimized server scalable to four sockets
IBM System x3950 X6: 8U rack-optimized server scalable to eight sockets
Figure 2-1 shows the IBM System x3850 X6.
Figure 2-1 IBM System x3850 X6
The x3950 X6 looks like two x3850 X6 servers where one is placed on top of the other.
However, unlike eX5 servers, x3950 X6 employs a single chassis with a single midplane
design without any external connectors and cables.
Figure 2-2 shows the IBM System x3950 X6.
Figure 2-2 IBM System x3950 X6
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IBM System x3850 X6 and x3950 X6 Planning and Implementation Guide