Lenovo Flex System EN4023 Руководство по эксплуатации - Страница 12
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Figure 2. Location of the switch bays in the Flex System chassis
The EN4023 10Gb Scalable Switches can be installed in bays 1, 2, 3, and 4 of the Flex System chassis. A
supported adapter must be installed in the corresponding slot of the compute node.
With four-port or eight-port adapters, an optional FoD Upgrade might be required for the switch to allow
communications on all ports (however, with eight-port adapters, only six adapter ports can be used, and the two
remaining ports are not used.). (See Table 2 for details.)
With DPOD, there is no need to buy more switch upgrades for 4-port and 8-port adapters if the total number of
port licenses on the switch does not exceed the number of external (upstream network ports) and internal
(compute node network ports) connections that are used.
In compute nodes that have an integrated dual-port 10 GbE network interface controller (NIC), NIC ports are
routed to bays 1 and 2 with a specialized periscope connector, and the adapter in slot A1 is not required.
However, when needed, the periscope connector can be replaced with the adapter. In such a case, the
integrated NIC is disabled.
The following table shows compatibility information for the EN4023 and Flex System chassis.
Table 4. Flex System chassis compatibility
Description
Lenovo Flex System EN4023 10Gb Scalable Switch
The connections between the adapters that are installed in the compute nodes to the EN4023 installed in the I/O
bays in the chassis are shown in the following figure. The figure shows both half-wide servers, such as the x240
with two adapters, and full-wide servers, such as the x440 with four adapters.
Lenovo Flex System EN4023 10Gb Scalable Switch
Part
Enterprise
number
Chassis with
CMM
94Y5212
Yes
Enterprise
Carrier-grade
Chassis with
Chassis with
CMM2
CMM2
Yes
No
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