IBM Partner Pavilion DS4100 manual Host ports, Ethernet port, Expansion port, Serial port

Ethernet

Host port 2

Host port 1

Expansion port (inactive in the DS4100 single-controller storage server)

Serial port

AC power	AC power	Server ID	1 Gbps/
			2 Gbps
connector	switch	switch
			switch

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Figure 7. Interface ports and switches for DS4100 single-controller storage server

RAID controller

Each RAID controller contains several connectors and LEDs. Each controller has two host ports and one expansion port for connecting the storage server to hosts or expansion units. You first insert SFPs into the ports and then connect the fibre channel cables.

Host ports

The host ports (labelled Host 1 and Host 2) are used to connect a fibre channel cable from the host systems. You first insert an SFP into the port and then connect a fibre channel cable. The two host ports in each controller are independent. They are not connected in the controller module as they would be in a hub configuration. The host port connections can auto-negotiate between 1 Gbps and 2 Gbps.

Ethernet port

The Ethernet port is used for an RJ-45 10BASE-T or 100BASE-T Ethernet connection to each controller. Use the Ethernet connection to directly manage the DS4100.

Expansion port

The expansion port (labelled Expansion) is used to connect additional expansion units to the RAID controllers on the DS4100 base storage server. You first insert an SFP into the port and then connect a fibre channel cable.

Note: In the DS4100 single-controller storage server, the expansion port on the RAID controller is not active.

Serial port

The serial port is used by service personnel to perform diagnostic operations on the RAID controllers. Incorrect use of the serial port can result in loss of data access and, in some cases, in loss of data.

Note: The maximum baud rate is 57 600 bps.

Server ID switch (enclosure ID switch)

The server ID (also referred to as enclosure ID) switch settings range from 0 through 7. When connecting the DS4100 base storage server to DS4000 EXP100 storage expansion units, only the unique IDs ranging from 00 through 07 can be set.

12IBM TotalStorage DS4100 Storage Server: Installation, User’s, and Maintenance Guide