HP StorageWorks ESL E-Series, User Manual

Page: 23 / 188

Library Overview
23 ESL E-Series Tape Library User’s Guide
Library robotics
The library robotics consists of the main components identified in Figure 4 .
Figure 4: Library robotics
The vertical and horizontal motors move the library robotics into position to pick
and place tape cartridges, and rotates the optical scanner 180° to allow the library
robotics to pass cartridges between the side storage bins and the back storage bins
or tape drives. The extension axis assembly extends the library robotics forward to
make contact with the desired cartridge and then retracts the library robotics to
remove the cartridge from a bin or drive.
The library robotics includes the optical scanner that reads bar code labels (7
characters for Super Digital Linear Tape (SDLT) and 8 characters for Ultrium).
The scanner is used to maintain an inventory of the tape cartridges within the
library. A full inventory occurs automatically whenever the library is powered on
or when the doors have been opened. An inventory of just the load ports occurs
when the load ports have been opened. Inventories can also be initiated from the
host computer.
1
Picker assembly
2
Vertical motor
2
1