Host A and B can both access LUNs one to ten in a single SAN LUN 11 has been created and Host A can access it but Host B cannot. Which of the following will likely be the cause of this issue?

A faulty fiber HBA would disrupt all SAN connectivity for Host B across every LUN, not selectively block a single newly provisioned LUN.

In a SAN fabric, LUN masking and zoning use each host's HBA WWPN to control which hosts are permitted to see which LUNs. If Host B's WWPN is missing or incorrectly entered in the access control configuration for LUN 11, the SAN will deny Host B access to that LUN while still allowing Host A. Because Host B retains full access to LUNs 1-10, the HBA hardware itself is confirmed working, and the problem is isolated to a misconfigured WWPN entry for the newly created LUN.

An incorrect HBA software or driver version would cause broad compatibility or connectivity issues affecting all LUNs, not a targeted failure limited to LUN 11.

A defective HBA would result in complete SAN access failure for Host B on all LUNs, not a selective inaccessibility to one newly created LUN.