Disk Array Sales Still Humming Along
 

Few things in the world exhibit such perfect elasticity of price and demand as the appetite that corporations have had over the past 50 years for disk storage. As disk technology has progressed and the cost of a unit of capacity has come down dramatically, this has fueled an even larger demand for capacity. This has remained so in the first quarter of 2007, according to statistics compiled by IDC

http://www.itjungle.com/tfh/tfh061807-story07.html

I'm sure they are with decent 500GB drives now reaching $99 without rebates!

that's only for SATA though, once you need storage for fibre channel or scsi you pay a very high price