Red Hat Enterprise Linux (RHEL) 5.7, released on July 21, 2011
Key Features of the RHEL 5.7 Release While primitive by today’s standards, RHEL 5.7 introduced critical updates that kept the platform viable: red hat enterprise linux 5.7 x64 iso 84
Source: Red Hat Lifecycle (https://access.redhat.com/support/policy/eol-schedule) Red Hat Enterprise Linux (RHEL) 5
Includes support for Global File System 2 (GFS2) and the XFS file system. The Hacker News Lifecycle Status Red Hat Enterprise Linux (RHEL) 5.7