What's new in Red Hat Enterprise Linux 5.3

"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.

"Red Hat has also improved cluster operation. The distributed Global Filesystem (GFS) 2 is now officially supported, and fencing has been improved in several minor ways. RHEL 5.3 supports the encryption of root and swap partitions. The developers updated a number of system tools, for example the cups print server, the rpm and yum package management tools and the SystemTap tracing tool. Red Hat Enterprise Linux now offers the free OpenJDK Java development environment which, according to Red Hat, fully complies with the Java SE 1.6 Compatibility Kit."

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