Lenovo Flex System x222 Compute Node Produkthandbuch - Seite 17

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Embedded 10Gb Virtual Fabric Adapter
Each server in the x222 includes an Embedded two-port 10Gb Virtual Fabric Adapter (VFA, also known
as LAN on Motherboard or LOM) built in to the system board. The x222 has one Fabric Connector (which
is physically on the lower server) and the Ethernet connections from both Embedded 10 Gb VFAs are
routed through it. Figure 5 shows the physical location of the Fabric Connector.
The following figure shows the internal connections between the Embedded 10Gb VFAs and the switches
in chassis bays 1 and 2.
Figure 6. Embedded two-port 10 Gb VFA connectivity to the switches
In the figure:
The blue lines show that the two Ethernet ports in the upper server route to switches in bay 1 and bay
2.
The red lines show that the two Ethernet ports in the lower server also route to switches in bay 1 and
bay 2.
To support both servers in the x222 you will need sufficient internal ports, either by applying the relevant
switch upgrade, or using flexible port mapping or Dynamic Ports on Demand to reconfigure the ports.
Flexible port mapping (CN4093, EN4093R, EN4093, SI4093, EN2092) or Dynamic Ports on Demand
(EN4023) both allow you to select which ports (internal or external) are enabled. The base switch has 24
port licenses and these ports can be assigned to either internal or external ports. Each x222 installed in
the chassis requires 2 internal ports to each switch. If you have eleven x222 compute nodes installed in
the chassis then that will require 22 port licenses just for internal ports, leaving 2 port licenses for external
ports. For more than 11 compute nodes or for additional external ports, you will need to purchase
additional upgrades.
For a list of supported Ethernet switches, see the Supported switches section. For more details about the
switches, see the relevant Product Guide:
http://www.redbooks.ibm.com/portals/puresystems?Open&page=pg&cat=switches
Flex System x222 Compute Node
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