2 Virtual-IO Manager - Introduction
Figure 1: Overlapping areas of responsibility
As the areas of responsibility overlap, this means that up to three admin- istrators may be involved if a server blade's configuration changes, e. g. because a server blade has to be replaced due to hardware problems and, as a result, the switches have to be reconfigured.
The onboard LAN and FC controllers in the server blade are connected to the installed LAN or FC switches via a midplane and are, in turn, connected to the LAN and SAN network via their uplink ports. Providers use specific pro- tocols or protocol extensions for switches from different manufacturers, which can lead to interoperability problems between the internal and external switches of different providers.
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