The banking giant is investing in a competitor to Dropbox and Box. : Goldman Sachs is a believer in the small startup Egnyte, which specializes in helping companies manage their online documents and files. Egnyte said Wednesday that the banking giant invested $75 million into the startup, bringing its total funding to $132.5 million since it was founded in 2007. The company declined to comment on its valuation. Holger Staude, the vice president of Goldman Sachs’ (gs) private capital investing unit, will join Egnyte’s board of directors as part of the deal.