All system storage (whether main storage
or disk storage) is addressed in the same way.
This single, device-independent
addressing mechanism means that objects are referred to by name or name and
library, never by disk location.
All objects are created as if they reside in a
18,446,744,000,000,000,000 byte address space. That's 18.4 quintillion bytes!
The System i's virtual addressing is
independent of an object's physical location, and the type, capacity, and
number of disk units on the system.
What this means is that application
programs do not require modification in order to take advantage of new storage
technologies.
Users can leave all storage management entirely to the machine.
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