You have just completed installing, cabling, zoning, and device masking for a new server. HBA configuration was successful, yet the host cannot see the storage after executing a device find command. I

If the switch ports were disabled, there would likely be no light visible at the switch end, contradicting the observation that light is visible at either end.

An HBA on the subsystem (likely meaning the storage array) being offline would affect the target's ability to communicate, but the question states the host is not seen at the switch port, implying the host HBA is the issue.

If the zone had not been activated, the host might see the switch but not the storage, or might not be able to log in to the fabric, but the fundamental problem here is no link is established at the physical layer, as indicated by no link light.

In fiber optic cabling, the transmit (Tx) fiber from one device must connect to the receive (Rx) fiber of the other device, and vice versa. If the Tx and Rx fibers are reversed (Tx-to-Tx and Rx-to-Rx), light will be present at both ends, but neither device will receive a signal from the other, preventing a link from being established and thus no link light on the switch.