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JFS (file system)
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<p>Journaled File System (JFS) is a <a href="/facts/64-bit_computing/AgvkQHkM">64-bit</a> <a href="/facts/Journaling_file_system/UCAaSBrD">journaling file system</a> created by <a href="/facts/IBM/QszA7nwd">IBM</a>. There are versions for <a href="/facts/IBM_AIX/cRWERua2">AIX</a>, <a href="/facts/OS%2f2/uVBl6ItP">OS/2</a>, <a href="/facts/EComStation/0FseHaUf">eComStation</a>, <a href="/facts/ArcaOS/KGRJJQTA">ArcaOS</a> and <a href="/facts/Linux/9FvCKSTq">Linux</a> <a href="/facts/Operating_system/8XTuvMh2">operating systems</a>. The latter is available as free software under the terms of the GNU General Public License (GPL). <a href="/facts/HP-UX/hIvLDdJF">HP-UX</a> has another, different filesystem named JFS that is actually an OEM version of <a href="/facts/Veritas_Software/bR9DtVM3">Veritas Software</a>'s <a href="/facts/VxFS/qh1rtMTQ">VxFS</a>. </p><p>In the AIX operating system, two generations of JFS exist, which are called <i>JFS</i> (<i>JFS1</i>) and <i>JFS2</i> respectively. </p><p>IBM's JFS was originally designed for <a href="/facts/32-bit_computing/TDMVce8s">32-bit</a> systems. JFS2 was designed for <a href="/facts/64-bit_computing/AgvkQHkM">64-bit</a> systems. </p><p>In other operating systems, such as OS/2 and Linux, only the second generation exists and is called simply <i>JFS</i>. This should not be confused with JFS in <a href="/facts/AIX_operating_system/cRWERua2">AIX</a> that actually refers to JFS1. </p>