Almost 80 contract variations worth more than $81 million tripled the cost of a Department of Health central computing services contract, with issues including more than 60 per cent of data racks going unused, the auditor general revealed today.

Almost 80 contract variations worth more than $81 million tripled the cost of a Department of Health central computing services contract, with issues including more than 60 per cent of data racks going unused, the auditor general revealed today.