ONStor Inc, a manufacturer of high-performance scalable NAS gateways for multi-vendor storage, has announced the expansion of its international operations with a new European appointment. Roland Voelskow today joined ONStor as Vice President of Sales for continental Europe. In this role Voelskow will oversee all sales operations in the territory. Based in Frankfurt, Germany, Voelskow joins ONStor from server virtualisation provider Egenera, where he held overall responsibility for central and Eastern Europe.