Of course, the third thing is execution. As a company, we are very focused on execution, in delivering quality and innovative product and also execution in delivering a good business model and shareholder value. If you look at our financial model, we have consistently delivered strong financial performance over many, many years. The business generate a very strong cash flow. We also have returned $1.8 billion cash to shareholders through stock buyback, so we’re very committed to shareholder value creation.
On the market leadership side, just a quick highlight, right, we are the leader in Fiber Channel market. We have 55% market share, and we gained market share each year during the last eight years. In the emerging Fiber Channel over Ethernet market, again, we are number one. We have 54% market share. This is a emerging new market, the market is still very small, but leverage our Fibre Channel adapter leadership, but we have again the similar market share. In the 10-gig Ethernet, including FCoE adapter card in 2011, we’re number two just next to Intel. So in this new market opportunity, we really carved out a nice position for ourselves.
For some of you who are not familiar with QLogic, just two quick slide about our product and the customers. Our host product include Fiber Channel adapters, the 10-gig adapters, converged adapters, and iSCSI adapters. Typically, they sit inside of the server or it could be in the storage array from the end, it accounts for about 77% of our revenue, so it’s really the major business of QLogic.
And then our network product include Fibre Channel switches, Fibre Channel over Ethernet switches, and the intelligent storage routers. The revenue is about 13% of our overall revenue and also we provide silicon product, ASIC to customers when they need just ASIC product. Most of the silicon product actually belong to the host category. Silicon products tend to be around 10% of our revenue. We have a very OEM-centric model traditionally. If you look at our top six customers that we have, top four server OEMs, HP, IBM, Dell and Oracle and also we have two top storage OEMs, EMC and NetApp, those are our top six customers.