The book states you cannot upgrade a 100 to 150.

I take that as being you cannot stick a 150 software card or a 150 software upgrade onto a 100 and expect it to turn into a 150.
In other words you need to replace cabinets.

The only difference is:
The cabinets hardware
The capacity size of the software card (is doubled or more on the 150 card)

Otherwise the software structure is the same.

Try it, it will let you or not....no way to muck it up.



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