Top 10 Ways to Trim Storage Costs

http://www.enterprisestorageforum.com/management/article.php/3908676/Top-10-Ways-to-Trim-Storage-Costs.htm

Software Virtualization

There are many ways to virtualize storage. In some cases, the vendor suggests throwing away old hardware to buy a brand new virtualization array. A cheaper way is to leave legacy disk in place and incorporate it into a shared storage pool using software-based virtualization.
“With software-based storage virtualization, you can take full advantage of disk resources already in place before you spend any money on additional capacity,” said Augie Gonzalez, director of product marketing, DataCore Software.