Perhaps it's an ad, but it's one that interests me. I come here to find out the latest developments in tech, and the continuing advances of SSDs is something I find interesting.
HDDs have become so huge that the biggest problem isn't storage capacity, or even bandwidth: it's IOPS. It's pretty lame that I can store literally many millions of documents in a hard disk cluster that can only delivery a few hundred IOPS per second. Do the math. It takes forever to get your data out, especially if they are small documents!
SSDs don't have this problem. 50,000 IOPS is "no big deal" for an SSD, meaning that even if you have 40 million tiny 10k documents, you can still saturate your 6 Gbit SATA interface with sweet, sweet data.
We switched our DB servers to SSDs and saw over 90% reduction in average query latency. Next up is our file stores, which use ZFS. Our next step is an SSD cache for ZFS, and then as prices continue to tumble, we'll switch to all SSDs everywhere.