Lenovo DE120S, Hardware Installation And Maintenance Manual

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• DE120S and DE240S
Required components
In addition to controller shelves and drive shelves, you might need some or all of the following components
when cabling your storage system:
• Cables: SAS, Fibre Channel (FC), Ethernet
• Small form-factor pluggable (SFP)
• Switches
• Host bus adapters (HBAs)
• Network interface cards (NICs)
Host cabling
You can cable a host directly to a controller or use switches to connect a host to a controller.
Cabling for a direct-attached topology
A direct-attached topology connects host adapters directly to controllers in your storage system.
The following figure shows an example connection. To help ensure maximum performance, make sure to use
all available host adapter ports.
Two hosts and two controllers
Connect each host adapter port directly to the host ports on the controllers.
Cabling for a switch topology
A topology that uses switches to connect hosts to the controllers in your storage system must support the
connection type used between the host and the controller. The host adapters in the hosts might be HBAs for
Fibre Channel or Ethernet for iSCSI.
The following figure shows an example connection.
For Fibre Channel, make sure to use single-initiator, single-target zoning.
Chapter 2
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System setup and configuration
25