The following commentary comes from an independent investor or market observer as part of TheStreet's guest contributor program, which is separate from the company's news coverage.NEW YORK ( TheStreet) -- The recovery, halting though it is, has had one positive side effect. Tech spending is on the upswing and for investors this spells opportunity. According to IDC, the giant technology intelligence firm, tech spending rose 5% in 2011, and is expected to rise another 5% in 2012 reaching nearly $1.9 trillion globally. That's a big number capable of making an impact on bottom lines. The question is, which ones? Tech spending was on a robust upward trajectory until 2006, then went south with everything else, and actually contracted about 5% in 2009. It's been rising since, and if you bought into tech at the nadir three years ago you've perhaps been handsomely rewarded. If you missed the boat, however, there's still time to make a play in tech. Obviously "tech" is a big space ranging from sales force automation to wireless networks and everything in between, creating lots of possible approaches. However I believe that recovery spending, coupled with advances in tech in general favor a "data center" approach. Follow TheStreet on Twitter and become a fan on Facebook. The data center isn't the front lines of technology -- like the electronic clipboards that UPS delivery personnel carry -- but rather in the back, in the clean, cool, white rooms where networks are managed. That's because the leading edge of a rise in tech spending has two fundamental requirements: more networking gear and more memory. Thus, while tech spending may be growing at 5% this year, I'm confident that networking and storage will grow 8% to 10%, or twice as fast in a best-case scenario. Further, margins for storage and networking products range from 40% to 60% and are much higher than some of the more commoditized products in the data room, which might top out at 30%.