Texas Memory Systems RamSan-300/320 manual Configuring high availability, Primary Active

7.2Configuring high availability

The administrator can configure the RamSan’s Fibre Channel (FC) controllers to back each other up in case of a failure. There are five basic FC controller states. To view or change the state:

•From the Telnet Main Menu, select “Controller setup”

Figure 7-4: Controller Setup Menu

The Controller Setup screen, see Figure 7-4, displays the selected controller at the top of the screen. Next to the controller number, the display indicates the controller’s states. In Figure 7-4, the selected controller is “2” and the display indicates that the controller’s state is “Primary (Active, Secondary is 3).” The following list details what these states mean, how a controller can end up in each state, and what a controller’s options are from the states:

Primary (Active)

This default state is the most basic state. In this state, the controller is not associated with any of the other FC controllers. The administrator can modify any controller setting from this state, and the effect will be local to this controller. This controller’s links are enabled and can be used to transmit and receive data.

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