Connecting Switch Attach Configurations - R/Evolution 2730 Getting Started Manual

Connecting Switch Attach Configurations

This section explains how to connect the controller enclosure to data hosts through
one or more external FC switch.
The controller enclosure has four host connections, two per controller. Connect FC
cables from controller hosts ports to switch ports, and from switch ports to data
hosts, as shown in the following figures.
To maintain redundancy, connect each data host through the switch or switches to
both controller A and controller B. Make sure that link speed and topology settings
on switches match those on the controller host ports to which they are connected. A
speed mismatch prevents the host from accessing the storage system.
Caution – Fiber optic cables are fragile. Do not bend, twist, fold, pinch, or step on
the fiber optic cables. Doing so can degrade performance or cause data loss.
Note – For clarity, the schematic illustrations of the controllers shown in this
section show only relevant details such as host ports. For detailed illustrations
showing all components, see "Hardware Components and LEDs" on page 11.
Chapter 3 Connecting Hosts 49