Administrator Guide
Changing host port settings
You can configure controller host-interface settings for ports except for systems with a 4-port SAS controller module. To enable the
system to communicate with hosts, you must configure the host-interface options of the system.
NOTE: If the current settings are correct, port configuration is optional.
For a system with a 2-port SAS controller module, host ports can be configured to use standard cables. A standard cable can connect one
port on a SAS host to one controller port, using four PHY lanes per port. Use of fan-out cables is enabled by default. When configuring the
host-interface settings for a 2-port SAS controller module, the Host Ports Settings panel displays the following:
• Current link speed
• Cable type
• Number of PHY lanes expected for the SAS port
• Number of PHY lanes active for each SAS port
The number of ports that are displayed depends on the configuration of the system.
CNC host ports can be configured as all FC or all iSCSI ports, or a combination of both. FC ports support use of qualified 8 Gb/s or 16
Gb/s SFPs. You can set FC ports to auto-negotiate the link speed or to use a specific link speed. iSCSI ports support use of qualified 1
Gb/s, 10 Gb/s SFPs. or qualified 10 Gb/s Direct Attach Copper (DAC) cables. iSCSI port speeds are auto-negotiated.
NOTE: For information about setting host parameters such as FC port topology, and the host-port mode, see the
Dell
EMC PowerVault ME4 Series Storage System CLI Guide
.
Configure FC ports
Perform the following steps to configure FC ports:
1. Perform one of the following to access the options in the Ports tab:
• In the Home topic, select Action > System Settings, then click Ports.
• In the System topic, select Action > System Settings, then click Ports.
2. From the Port Settings tab, set the port-specific options:
• Set the Speed option to the proper value to communicate with the host, or to auto, which auto-negotiates the proper link speed.
Because a speed mismatch prevents communication between the port and host, set a speed only if you need to force the port to
use a known speed.
• Set the Connection Mode to either point-to-point or auto:
○ point-to-point: Fibre Channel point-to-point.
○ auto: Automatically sets the mode based on the detected connection type.
3. Perform one of the following:
• To save your settings and continue configuring your system, click Apply.
• To save your settings and close the panel, click Apply and Close.
A confirmation panel appears.
4. Click OK.
Configure iSCSI ports
Perform the following steps to configure iSCSI ports:
1. Perform one of the following to access the options in the Ports tab:
• In the Home topic, select Action > System Settings, then click Ports.
• In the System topic, select Action > System Settings, then click Ports.
2. From the Port Settings tab, Set the parameters for the iSCSI ports:
• IP Address: For IPv4 or IPv6, the port IP address. For corresponding ports in each controller, assign one port to one subnet and
the other port to a second subnet. Ensure that each iSCSI host port in the storage system is assigned a different IP address. For
example, in a system using IPv4:
○ Controller A port 2: 10.10.10.100
○ Controller A port 3: 10.11.10.120
○ Controller B port 2: 10.10.10.110
○ Controller B port 3: 10.11.10.130
• Netmask: For IPv4, subnet mask for assigned port IP address.
Working in the Home topic
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