Use the Enable/Disable Host Mapping screen to enable or disable the optional host mapping feature. The host mapping feature allows you to map specific hosts to library device logical unit numbers (LUNs). This feature is disabled by default.

During device discovery, a particular partition or tape drive could map to a higher LUN space than is optimal for a particular application. Host mapping enables you to create a virtual private remapping of available LUNs for specific Fibre Channel (FC) hosts. When compared to channel zoning, host mapping is a more precise way to give hosts access to partitions and tape drives.

You can configure host access using the host management and host mapping operator panel screens for all I/O blades found in the library.

Note: If both channel zoning and host mapping are enabled, the channel zoning settings supersede any host LUN mapping on the I/O blade. If a device is zoned out, it cannot be mapped.

Do the following:

    1. To enable host mapping, select Enable. To disable host mapping, select Disable.
    2. Select Apply.

Note: At any time, select Back to return to the previous screen. Select Cancel to return to the Setup menu.