Worldwide factory revenue for external disk storage systems grew faster than ever during the third quarter, said analysts IDC today.

The value of external disk storage system shipments during the third quarter rose 12.5 per cent over the same period last year, to $3.9 billion, IDC said. This is the highest growth rate that IDC has recorded since it began tracking shipments of external disk storage systems in 2001, it said.

EMC was the largest vendor of external disk storage systems, with 20.3 per cent of the market, IDC said. HP came in second with 19.1 per cent of the market, while IBM came third with 12.9 per cent of the market, IDC said. Hitachi Data Systems and Dell both had 8.4 per cent of the market.

Also during the third quarter, the total worldwide disk storage systems market grew at a record rate of 13.3 per cent to $5.7 billion, IDC said. Total disk storage capacity grew 58 per cent compared to the same period last year, rising above half an exabyte for the first time at 505 petabytes, it said.