On August 7, 2006, Apple announced Xsan 1.4, which is available for Intel-based Macintosh computers as a Universal binary and supports file system access control lists. On December 5, 2006, Apple released Xsan 1.4.1. On October 18, 2007, Apple released Xsan 1.4.2, which resolves several reliability and compatibility issues. On February 19, 2008, Apple released Xsan 2, the first major update, which introduces MultiSAN, and completely redesigned administration tools. 2.1 was introduced on June 10, 2008. 2.1.1 was introduced on October 15, 2008. 2.2 was released September 14, 2009. On July 20, 2011, Apple released Xsan 2.3, included in Mac OS X Lion. This was the first version of Xsan included with macOS. On August 25, 2011, Apple released Xsan 2.2.2, which brought along several reliability fixes. On July 25, 2012, Apple released Xsan 3, included in OS X Mountain Lion. On October 17, 2014, Apple released Xsan 4 with OS X Yosemite. On September 20, 2016, Apple released Xsan 5 with macOS Sierra and macOS Server 5.2. On November 12, 2020, Apple release Xsan 7 with macOS Big Sur. References Krypted.com Xsan Tutorials and Documentation External links Apple's Xsan page Shared disk file systems Apple Inc. file systems Apple Inc. software