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Before you install the host adapters, note the following reminders about the cluster
server fibre channel network environment:
v When using a dual-path configuration, each node has two paths to the storage
subsystem providing greater redundancy protection if a connection problem
occurs. Install two single-channel host adapters in each node.
v Use the correct host adapter device driver. Refer to the Storage Manager
Installation Guide that is appropriate for your operating system and refer to the
readme file for information on supported host adapters and device drivers. You
can find this information on the Storage Manager installation CD or at the
Figure 83. Host adapters in storage subsystems on a fibre channel network
110 IBM TotalStorage DS4500 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide