HP StorageWorks MSL Library Extender user guide (AQ746-96005, September 2009)

1 Features and overview
The Library Extender combines two HP StorageWorks MSL Tape Libraries to create a single extended
library. Before installing the Extender, the Libraries must be installed in the rack rails supplied with
the Libraries in adjacent rack locations, one Library above the other. See the example shown in Figure
1.
Figure 1 Library Extender installed with two MSL4048 Tape Libraries
.
The Extender occupies the lower half-height drive bay of the upper Library and the top half-height
drive bay of the lower Library.
The upper Library controls the extended library and is called the master Library. The extended library
uses only the master Library OCP, USB port, and Ethernet connection.
The lower Library is controlled by the master Library. The lower Library OCP, USB port, and Ethernet
connection are not used by the extended library.
Table 1 Supported configurations
Total full-height drive
bays
Total half-height drive
bays
Total slotsLower LibraryMaster Library
1+03+172MSL2024MSL4048
1+13+396MSL4048MSL4048
3+03+1120MSL2024MSL8096
3+13+3144MSL4048MSL8096
HP StorageWorks MSL Library Extender user guide 11