Strong sales of high-performance ProLiant servers to rapidly growing segments of the market including Application Service Providers, Internet Service Providers and Corporate Internet Data Centers reflected Compaq's commanding presence in the Internet space. BCSG launched its GS line in May and shipped more than 50 units in the quarter. Customer demand remains high and Alpha product growth will ramp to target levels, resulting in double-digit revenue growth for the remainder of the year. The group's Himalaya systems revenue continued to grow, and the quarter saw the successful launch of the S74 Himalaya server, which provides a new level of performance for our customers. Overall storage capacity shipped increased by more than 70 percent, which was offset by price declines per unit of capacity.
Enterprise storage continues to keep pace with robust market growth.
Early in the third quarter, Compaq announced a partnership with IBM to redefine the market by promoting open Storage Area Network standards. Commercial PC products accounted for 33 percent of second quarter revenue. The Consumer Group represented 16 percent of second quarter revenue. The group's international expansion strategy continues to be successful, with strong growth across the regions. Second quarter consolidated operating income was 13 percent of revenue.