The deal will bring a 536 square metre facility into Vocus' expanding portfolio, which began with the in October last year.

Vocus in December.

Under the deal with PerthIX, Vocus will pay $6.275 million in cash consideration to the Western Australian data centre operator for the company, and an additional $725,000 should the operator exceed financial forecasts from the 2012 financial year.

Current Perth iX general manager, Adam Gardner, would join Vocus as facility manager for Perth, but no staffing decisions had been as to his reporting line in the company.

"Perth is a strong growth market," Vocus chief executive, James Spenceley, told .