Iron Mountain Inc., an information storage and management company headquartered in Boston, said Monday that its board of directors has voted unanimously to appoint William Meaney president and chief executive, effective Jan. 7.

Meaney will succeed executive chairman and chief executive Richard Reese, who announced his intention to retire after 31 years at the company, Iron Mountain said. Reese served as chief executive from December 1981 to June 2008 and returned as CEO in April 2011, the company said in a press release. The company has more than $3 billion in annual sales.