The tape library contains one or two DLT7000 tape drives.
Each tape drive is mounted on a drive load plate that also includes a fan (for cooling the tape drive) and the drive handle-opening mechanism.
When the tape library has only one tape drive, the unused drive location is filled by a cover plate.
If the tape library was originally installed with only one tape drive, a second tape drive can be added later to increase data transfer capability.
Figure 3 shows the location of the DLT7000 tape drives in the tape library back panel.