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The RHEL operating system (OS) supports diverse workloads in physical, virtualized and cloud environments. RHEL editions are available for servers, mainframe, SAP applications, desktops and OpenStack.
The RHEL 6.5 update, based on Linux kernel version 2.6.32-431, provides Precision Time Protocol (PTP) support, centralized certificate administration and security updates, large-scale resource management, broader support for solid-state storage devices and extended subscription management services. RHEL 7, which as this writing is still in beta, will have multiple file systems, supporting EXT4, XFS and btrfs in addition to EXT2 and EXT. The interface will also change, with Gnome 2 classic mode as the default.