Hard drive terabytes to increase at 37% a year between 2004 and 2009

Over 50% of all storage terabytes (38% of the worldwide storage revenue) shipped in 2009 will be based on capacity-oriented disk drives. Worldwide shipments of external disk system terabytes are expected to increase at a 2004-2009 compound annual growth rate (CAGR) of nearly 60%, while shipments of internal terabytes will increase at a less aggressive 37% CAGR over the same period. Worldwide disk storage system revenue will increase from $22.6 bln in 2004 to $26.3 bln in 2009.