What's the point of using SSD in those applications? You don't need the higher iops and the spinning rust drives have an awfully low failure rate in non-mobile applications. Just wondering your use case.
When I installed these drives in my home computers it increased the FSB speed, which in turn made the computers about 60% faster, (Using Benchmark Speed Comparisons) and much of my software performed much better, like AutoCad & Bluebeam. I'm not sure how they'll pan out when it comes to longevity in a surveillance DVR.
They seem to work great in a 6 bay server I set up for a friend at his business. It's been up for over a year and no problems so far. As far as the failure rate with SRD's, that depends on which brand you use. I'm a firm believer in Western Digital. Some of the others are way down on the list.