On October 18, 2007, Apple released Xsan 1.4.2, which resolves several reliability and compatibility issues.

On December 5, 2006, Apple released Xsan 1.4.1. 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. In May 2006, Apple released Xsan 1.2 with support for volume sizes of nearly 2 petabytes. On January 4, 2005, Apple announced shipping of Xsan. The file system supports dynamic expansion and distribution of both data and metadata areas. Most configurations use different storages for data and metadata. The two main classes of information appear on Xsan: the user data (such as files) and the file system metadata (such as folders, file names, file allocation information and so on).

Xsan file system uses several logical storages to distribute information. XSan clients use TCP ports 49152–65535, with TCP/63146 frequently showing in log files. Some of the command line tools for Xsan begin with the letters cv, which stand for CentraVision – the original name for the file system.

Quantum Corporation claims: 'Complete interoperability with Apple’s Xsan and Promise RAID and Allows Xsan and Xserve RAID to support AIX, HP-UX, IRIX, Red Hat Linux, SuSE Linux, Mac OS X, Solaris, and Windows clients, including support for 64 Bit Windows and Windows Vista.' The Xsan website claims complete interoperability with the StorNext File System: 'And because Xsan is completely interoperable with Quantum’s StorNext File System, you can even provide clients on Windows, Linux, and other UNIX platforms with direct Fibre Channel block-level access to the data in your Xsan-managed storage pool.' They also seem to share a common code base or very close development based on the new features developed for both file systems. The StorNext File System and the Xsan file system share the same file system layout and the same protocol when talking to the metadata server. Xsan is based on the StorNext File System made by Quantum Corporation.

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