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of Cartridges
on the TS4500 management GUI. Then, rediscovering the logical
library at the application (for example, by restarting the application).
To modify the maximum number of cartridges for a logical library, access the
management GUI and select Library > Logical Libraries .
Configuration of storage capacity without disruption
With the Advanced Library Management System (ALMS), the capacity expansion
features can be enabled to increase storage capacity without disrupting library
operations.
No downtime is required when you enable the base or intermediate
capacity-on-demand features for models L25 and L55.
Also, no downtime is required when you enable the high-density
capacity-on-demand features for models Lx5, Dx5, and Sx5.
Virtual I/O slots
With the Advanced Library Management System (ALMS), virtual I/O slots
enhance the import and export capabilities of the library.
With the TS4500 tape library, virtual I/O slots are always enabled so that the
library automatically queues all cartridge moves between the I/O station and the
storage slots. This capability makes the process of adding and removing cartridges
easier and faster.
The TS4500 tape library has I/O stations with cartridge magazines that you can
use to import and export up to 144 cartridges at any time. The I/O slots are also
known as import/export elements (IEEs). Virtual I/O slots increase the quantity of
available I/O slots by allowing storage slots to appear to the host as I/O slots.
These storage slots are also called virtual import/export elements (VIEEs). With
virtual I/O slots, the library automatically moves cartridges from the I/O stations
to the storage slots. This enhances the import and export performance, while also
decoupling physical cartridge movement from the application. As a result, the
operator efficiency is increased..
With virtual I/O slots, the library has various mechanisms for selecting the best
storage slot location for each inserted cartridge, and the best I/O station for each
ejected cartridge. These mechanisms vary depending on the configuration of your
library.
Power structure of the TS4500 tape library
This section introduces the power structure that is offered by the TS4500 tape
library.
TS4500 frame control assembly (FCA)
What is included in the FCA?
For models L25, D25, L55, and D55, the library offers the TS4500 frame control
assembly power structure, which combines drive power, library power, and
ACpower cord capabilities. Each of the Lx5 and Dx5 frames comes with two Back
Plane Cards (BPCs) and two power supplies. Model Sx5 frames do not have their
own power supply. They share power with either an Lx5 or Dx5 frame.
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IBM TS4500: Introduction and Planning Guide