Lanner HCP-72i1, Руководство пользователя

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Chapter 7:
About the PCIe-Switch Feature of HCP-72i1
Brief
HCP-72i1 is built with TCM-IXT801A network device card, which is programmed with PCIe switch functionality.
Unlike traditional redundant system where one identical machine will take over the work from the main server until
the main server crashes, Lanner’s TCM-IXT801A will be able to avoid this indirect waste of efficiency of the backup
server.
To maximize the performance, TCM-IXT801A allows two identical servers to deal with their own network packets
separately in the normal condition. The network device(s) will be switched into the other system by dynamically
transferring PCI Express bus via PLX8748 PCI Express switch to keep on the original server task and shorten the
troubleshooting time while one machine is under malfunction. The network device(s) that has been switched will be
returned to the original system when the information staff restarts the crashed server.
The following presents the structure of the PCIe-Switch mechanism of HCP-72i1.