Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of clustered storage specialist Isilon Systems (Nasdaq: ISLN) jumped 30% over the weekend on news that EMC (NYSE: EMC) is serious about buying the company.

So what: EMC's all-cash offer of $33.85 per share values Isilon at $2.25 billion after backing out the company's $114 million of debt-free cash. It's a generous buyout premium for a small firm, but EMC is happy to pay top dollar for a fine patent portfolio and a great engineering team.

Now what: The buyout mayhem in the storage industry continues unabated. Will this be the final straw that inspires final takeover offers for backup expert Quantum (NYSE: QTM) or disk builder Seagate Technology (NYSE: STX)? Stay tuned.

Interested in more info on Isilon? Add it to your watchlist by clicking here.

Fool contributor Anders Bylund holds no position in any of the companies discussed here. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool is investors writing for investors.