Q-Layer, a Belgium-based seller of corporate datacenters as a service — where you pay for usage as you go — said it has raised a €7 million ($9 million) second round of capital from Wellington Partners, Partech International and Big Bang Ventures.

This follows a € 1.4 million first round in May 2006.

Q-layer says it combines server, networking, and storage infrastructure virtualization software on commodity hardware for commercial datacenters.

Q-layer said it plans to use the money to build its market presence in the US and Europe.