The total disk storage systems market grew to $6.8 billion in revenues, representing 20.7 percent growth from 2009's second quarter. - Worldwide sales of disk-based storage arrays, which leveled off only briefly during the last two years of a difficult macroeconomy, climbed a healthy 21 percent in the second quarter of 2010 over the same period a year ago, industry researcher IDC reported Sept. 3. For the quarter, the total d...