Methodology to Present a LUN to a Single Host

A.

The methodology used to present a SAN hosted LUN to only a single host is called LUN masking, which is achieved by configuring the storage array to only allow access to the LUN by the designated host.

LUN masking is a security feature that prevents unauthorized access to LUNs, thereby improving the reliability and availability of the data stored on the SAN. By restricting access to a specific host, LUN masking ensures that only the authorized host can read and write data to the LUN.

LUN masking is implemented by creating an access control list (ACL) on the storage array that specifies which hosts can access the LUN. The ACL is typically based on the World Wide Name (WWN) or the IP address of the host. The storage array uses the ACL to allow or deny access to the LUN based on the host's identity.

LUN ID assignment, on the other hand, refers to the process of assigning a unique ID to each LUN on the SAN. LUN IDs are used to identify and access the LUNs, but they do not control access to the LUNs themselves.

Port mapping is the process of mapping the physical ports on a switch or storage array to the logical ports on the hosts. Port mapping allows the hosts to access the storage array through the mapped ports, which simplifies the configuration process and improves performance.

Port zoning is a method of partitioning a SAN into separate zones, each of which includes a group of hosts and storage devices that can communicate with each other. Port zoning improves security and reduces the risk of data loss by limiting access to specific zones.

In summary, LUN masking is the methodology used to present a SAN hosted LUN to only a single host by configuring the storage array to restrict access to the LUN based on the host's identity.