You can configure multiple connection paths for a selected device by implementing designs such as the following:
Configure the server with multiple host bus adapters for connection to external devices.
Use a storage device with multiple interconnects for connection to one or more host bus adapters.
Interconnect a server’s multiple host bus adapters to storage devices through one or more intermediate network devices, such as a Fibre Channel switch.
Typically, multipath solutions involve storage area network interconnects, but other solutions are possible with direct attached storage devices.
To set the primary path and set priorities for failover:
In iManager, click .
For instructions, see Section 9.1.3, Accessing Roles and Tasks in iManager.
Select a server to manage.
For instructions, see Section 9.1.4, Selecting a Server to Manage.
In the list, select a device to manage.
Wait for the page to refresh before continuing.
Click .
This opens the page. All of the paths available between the selected server and the selected device appear in the list.
Select a path to manage.
Wait for the page to refresh before continuing.
Do one or both of the following:
Select Path: Click to make the selected path the primary path between the server and the external storage device. If the selected path is already specified as the primary path, this option is dimmed.
Priority: Click to set the priority for the selected path. In the Multipath Priority dialog box, enter a valid priority range of 1 to 4 million, where 1 is the highest priority and 4 million is the lowest. The default value of 0 (zero) is no priority.