Two terabytes. It’s too big to fathom. But they are here. So why would anyone need that musch space?

My bragging rights about my new, astounding, 1-terabyte hard drive lasted a paltry five months.

I hate to say this, but it’s totally obsolete. Two-terabyte drives now are arriving. The price, $99.99, is 10 bucks cheaper than my one terabyte. It could make you cry.

Two terabytes. It’s too big to fathom. Perhaps a 1.5-terabyte model better fits your lifestyle. They now are down to $69.99. One terabyte? It’s so passé.

At least right now, only the IRS needs all this storage.

A two-terabyte drive has space for 400,000 tunes or 800,000 photos. Think before you buy. Do you have enough life left to fill it? Even if you already had 400,000 songs, you’d need years just to load them.

So what’s behind this tera inflation? It’s total marketing. Tech thrives on something new. The only reason you’d need this much space — possibly — is if you make your own theatrical movies. A two-terabyte drive has room for 140 full-length, high-definition, two-hour movies.

Which begs an issue. A lot of these super drives were developed with the idea that our software constantly is expanding to add new features. We see that with the new Internet Explorer 9 browser.

One little problem: The trend is network computing where all of our programs and data files reside on a server someplace else. This is already happening in businesses. It’s called “the cloud.” Google is leading the charge with cloud-based applications for everybody.

Amazon is rolling out its cloud-based storage vault. It will hold up to a terabyte of your data. The advantage is you can access it anywhere on any computer via the Internet. Big plus: Your precious files are safe from disasters.

With cloud computing, the only things you need on your hard drive are the operating system and a browser. These systems are called thin clients. This is why business computers often come with small hard drives, about 160 gigabytes.

You could run a very large company on a two-terabyte drive. So I guess we’re buying them just in case.

P.S.: Next up, the petabyte drive. That’s 1,000 terabytes.

Contact Jim Hillibish at jim.hillibish@cantonrep.com.