Thousand Oaks-based Nexsan, a developer of storage hardware products, has appointed a new Chief Commercial Officer, the firm disclosed Monday. Nexsan said that Michael McGuire has joined the firm, reporting to CEO Philip Black, and will be in charge of worldwide sales, marketing, and business development. McGuire joins the firm from Sun Microsystems, where he was Vice President, Americas Storage Sales. He has also served at StorageTek prior to its acquisition by Sun.