> # About Unique Area FC IDs for HBAs

> Note Read this section only if the HBA port and the storage port are connected to the same switch.

> Some HBA ports require a different area ID than storage ports when they are both connected to the same switch. For example, if the storage port FC ID is 0x6f7704, the area for this port is 77. In this case, the HBA port’s area can be anything other than 77. The HBA port’s FC ID must be manually configured to be different from the storage port’s FC ID.

> Switches in the Cisco MDS 9000 Family facilitate this requirement with the FC ID persistence feature. You can use this feature to preassign an FC ID with a different area to either the storage port or the HBA port.

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