Capacity of Model L52, D52, L53, D53, and S54 Frames
High Density Capacity On Demand
This section describes the High Density Capacity on Demand features for the TS3500 Tape 
Library.
The HD Capacity on Demand feature codes provides a license key that let you enable 
additional storage slots in HD frames.
In the TS3500 Tape Library, the physical capacity, or total storage slots, is comprised of 
licensed and unlicensed capacity. When the number of assigned cartridges within a library 
reaches the licensed capacity, additional inserted cartridges are not assignable to a logical 
library until one of the following actions occurs: 
• A cartridge is removed
• A CoD feature is purchased
• Additional slots or frames are added to the library
The capacity utilization of the library can be monitored through the Tape Library Web 
specialist.
The initial (base) capacity for Model S24 is 600 slots and for Model S54 is 660 slots. 
Additional capacity for Models S24 and S54 can be purchased with the High Density 
Capacity on Demand (HD CoD) features that provide a license key to non-disruptively 
increase the licensed capacity. Unlike other Capacity on Demand features, the HD CoD 
feature allows the additional licensed capacity to be used in any HD frame in the library 
string.
Feature code 1645 adds 400 slots of capacity to Model S24. Feature code 1646 adds 660 
slots of capacity to Model S54.
To determine the quantity of LTO Ultrium tape cartridges and 3592 tape cartridges that the 
library supports, see Frame capacity.
Parent topic: Increasing capacity
Related concepts
High density technology
Web interface