Several resource in the internet tell that IBM will take SUN for $6.5 billion. This combination will boost IBM monopoly on server market for at least 42%.

The two companies have a common similarities which is a strong support to the open source and Java.

The deal, which would be IBM’s biggest ever, could close as early as this week.

It might also still fall apart, warn the WSJ’s “sources familiar,” who are probably execs eager to see how the market would react to their plan.

Acquiring Sun would mark a sharp turn for IBM. For the the better part of the last decade, Big Blue shed hardware operations to focus on its software and services businesses.

But acquiring Sun would help IBM take on new rival Cisco in the server sales business. It also counters hardware maker HP’s EDS acquisition, which moved HP into closer competition with IBM in the enterprise software market.