What's new in Red Hat Enterprise Linux 5.3
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Red Hat has released version 5.3, the third update of the Red Hat Enterprise Linux (RHEL) 5 operating system first introduced in March 2007. In addition to various bug fixes, RHEL 5.3 also offers a number of new features and improvements. Several improvements affect virtualisation. The x64 version of Xen now supports up to 126 processors and a Terabyte of memory. The paravirtualised network and mass storage drivers for fully virtualised RHEL-5 guest systems have moved into the kernel, and a separate installation is no longer required. Virtio drivers improve the performance of guest systems under the KVM alternative. Features like extended page tables that are included in recent x64 processors are now supported, which is likely to increase the performance of fully virtualised guests.
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