Dell, trying to demonstrate some innovation in a sector where it seeks to pick up market share, introduced <A HREF="http://www.eweek.com/article2/0,1895,2054363,00.asp?kc=EWNAVEMNL110906EOAD">a new removable disk-based storage device</A> for data backup and restore that the company says combines the speed of a hard disk with the portability of tape. Aimed squarely small and midsize businesses, branch offices and individual power users, the PowerVault RD1000 is a removable disk drive designed for savvy business users, not IT professionals. They work specifically with Dell PowerEdge servers and Dell Precision workstations.