Lizette,  As I have no future IBM product knowledge in this area, - just can 
base thoughts on what has happened in recent years...... I cant get in trouble 
- hopefully!

TS7700 is a family of products made up of different product parts - both 
hardware and software. Each piece can be upgraded  - for example the server 
running the virtualization engine, the disk subsystem used for tape cache, the 
physical tape library, the tape drives, the micro-code.
IBM has been successfully offering upgrade path enabling larger, faster,grid 
improvements, function improvements for a few years now .... I dont see a need 
for a replacement product given that all parts can be changed and it still be 
TS77xx.

Mike Wood

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