IBM TS4500 Tape Library

] The TS4500 Tape Library provides the following capabilities:
 HA dual active accessors with integrated service bays (ISBs) to reduce inactive service 
space by 40%. The Elastic Capacity option can be used to completely eliminate inactive 
service space.
 All frames include HD slot technology.
 Extra HD2 frame models can be placed in any active position so that the library can grow 
from the right and left sides of the first L frame.
 In dual accessor configurations, the ISBs reduce the number of unused storage columns 
in a dual accessor library from 22 to 14. While an accessor is in service, the media 
columns in that area are not available to the second accessor. 
Only D25 and D55 (Dx5) frames without the I/O station and S25 and S55 (Sx5) frames are 
supported as frame one in a dual accessor configuration. The rightmost frame can be an 
L25 and L55 (Lx5), Dx5, or Sx5 model.
 Advanced Single Deep Cell technology.
 IMC with support for an external TSSC and IMC.
 Web-based user interface for improved usability.
 Updated control system.
 Input/output (I/O) magazine to allow individual cartridge handling to be performed 
independently of the library.
 Top-rack space to house extra tape solution components within the library footprint.