With the surge in internet and other digital systems, there's been a huge demand for infrastructure technologies. Some of these operators -- like Aruba Networks (NASDAQ: ARUN), Data Domain (NASDAQ: DDUP), and BladeLogic (NASDAQ: BLOG) -- have gone public this year to raise more capital for growth. And the latest infrastructure player to file for an IPO is 3PAR.

The company is a provider of utility storage systems geared for medium and large enterprises. Basically, 3PAR leverages an architecture that melds servers and storage arrays to get better efficiencies for storage. In fact, the technologies combine some of the advantages of mainframe and client/server approaches.

3PAR has about 200 customers, including Credit Suisse (NYSE: CS), Dow Jones & Company (NYSE: DJ), MySpace.com, United States Census Bureau, and Verizon (NYSE: VZ).

Over the last year, 3PAR's revenues have grown from $38.1 million to $66.1 million, though the company is still posting losses.

The lead underwriters on the IPO include Goldman Sachs (NYSE: GS) and Credit Suisse.

The prospectus is located at the SEC website. If you want to check out more IPO filings, click here.

Tom Taulli is the author of various books, including the Complete M&A Handbook and the EDGAR-Online Guide to Decoding Financial Statements.