In the last three years, however, the company has moved out of the mainframe environment for its product development.

With PVS, one could test a program in the mainframe environment using scripts.

This enables tuning the configuration for optimal performance for both open systems and mainframe environments.

Both of these products have been ported to other platforms, and are now widely used outside the mainframe environment.

In a mainframe environment, to backspace means to move a magnetic tape backwards, typically to the previous block.

Performance tuning is particularly important in mainframe environments with large numbers of users.

The company claims it costs a third to a half less than non-fault-tolerant storage systems used in mainframe environments.

These tape formats are popular in mainframe environments.

This transition was accompanied by a simultaneous shift from the mainframe environment to the personal computer.

Its products are aimed at companies wanting to move from a mainframe environment to mid-range open systems networks.