The service panel has three sections: the top section is the Service Processor panel and the middle and bottom sections are the I/O panel. The service panel provides ports for both data host connections and storage connections.
As a guideline, use the four leftmost ports, ports 1 - 4, to connect to data hosts, and use the four rightmost ports, ports 5 - 8, to connect to the arrays in the system. However, you can allocate the ports as needed, depending on the number of arrays.
For example, if your site has fewer than four arrays in a single-cabinet system connected to a storage resource card (SRC) set, the unused ports can be used for connecting more than four data hosts, subject to the following limitations: