Physical and logical addresses of drives

The library assigns each tape drive a unique address to indicate its physical and logical location.

The library assigns each tape drive a unique address to indicate its physical location, which is shown in Figure 1. The physical numbering is bottom up on all drives. This information is shown on the Drives page of the Management GUI.
Figure 1. Physical numbering of drives
Physical numbering of drives

The library assigns each tape drive a SCSI element address that consists of a value that defines a logical location in the library to the SCSI interface. It is assigned and used by the application when the host server processes SCSI commands. The SCSI element address for a drive is unique to the location of the drive. It does not vary based on other drives in the library. See Library partitioning.