HP EML E-series Tape Libraries - Manual (Page 20)

Figure 15 Library network
2. FC Switch (SAN) 1. Hosts
4. Interface Manager card 3. Interface controller
6. Library robotics controller 5. LTO2 or LTO3 tape drives
8. OCP 7. Robot
10. Telnet connection 9. Serial connection
12. Library boundary 11. Management station
14. Switch for the internal network 13. LTO4 and later tape drives
In addition to receiving traffic from the interface controllers, the Interface Manager card receives
command and diagnostic requests over an Ethernet connection from three other possible sources.
The majority of requests come from a management station where Command View TL software
resides. The other two sources are through a Telnet session or a serial interface. The Interface
Manager card works in the background to manage library functions. It configures the interface
controllers to direct commands from host systems to the appropriate LTO2 or LTO3 tape drive or
to the library robotics controller.
The library robotics controller receives commands over an internal private network and from the
OCP. It manages robotics movement, monitors the door and load port sensor status, and stores
library information in volatile memory.
Load ports and magazines
The load ports are mechanical devices on the front of the library that enable you to import and
export tape cartridges to and from the library through removable magazines, or act as additional
library storage slots. These two functions for a load port cannot be mixed; you must either designate
an entire load port to be import/export slots or storage slots. The base module contains a load
port capable of using one 5-cartridge magazine. The 8U expansion modules contain load ports
capable of using two 5-cartridge magazines each.
20 Library overview