Clouds and mainframes are not the same thing.
Well of course not the same - but still very close.
- In mainframe model you had mainframe serving your applications, video to your screen, processor power, etc.
- In cloud computing, "mainframe" or "cluster of mainframes" serves either data, applications, or processing power to clients.
The general idea is the same, only details changed.
One could say that cloud is extension of mainframe-terminal
Mainframe means you have a central physical machine serving several user accounts.
So ? Cloud also has central physical cluster serving certain kind of user accounts which are used for different applications.
The same thing, only different layer.
Cloud means your computer is virtualised and agnostic of the underlying hardware.
Yeah... but that is still very close to client-mainframe model. Only this time on a different layer.
Mainframe/Terminal = Operational system layer
Cloud = The same, but 1 or 2 layers higher (application layer, web layer etc)
A cloud account could be hosted on a central physical machine (eg. Dropbox) or it could be hosted on a p2p network (eg. Wuala). The latter is very different from the terminal+mainframe model.
Oh. I wasn't aware of p2p clouds, thx for the info.
You are correct, if we're talking about cloud in P2P, then that's new. But cloud in a mainframe or in a cluster of mainframes - we have already seen that.