Scalent Systems, a Palo Alto company offering a data center virtualization software, said it has raised $15 million in a third round of funding.

This round was led by new investor Credit Suisse and includes participation by all existing investors, Hummer Winblad, JK&B Capital, and Pequot Capital, the company said in a statement sent to VentureBeat last week.

From its statement:

Scalent Systems is the first company to virtualize the entire environment of existing virtual and physical servers, networking, and storage resources, unifying data center infrastructure. Scalent’s Virtual Operating Environment (V/OE) software enables companies to streamline their disaster recovery processes, business system management, and the automation of large server populations in both production and dev/test labs. Companies using Scalent’s “rack once, cable once, reconfigure repeatedly” functionality have realized dramatic increases in enterprise data center flexibility and asset utilization, thereby contributing to their business bottom line.

One competitor is Egenera, of Marlboro, Mass., which raised about $150 million over five rounds of financing.