Red hat linux, assembled by the company red hat, was a popular linux based operating system until its discontinuation. Red hat linux 1 was released in 1994. It was originally called red hat commercial linux.

It is the first linux distribution to use the packaging system, the RPM package manager as its packaging format and over time has served as the starting point for several other distributions, such as linux and yellow dog Linux. Red hat enterprise linux updates provide:

* Feature enhancements and stable new features

* Security hardening

* Consolidated bug fixes

Visualization enhancements: Red hat enterprise linux supports larger x86 to x64 systems. The number of supported physical CPUs is increased to 126, while maximum memory is increased to 1TB. The linux enterprise has over 150 updates and upgrades, but here are a few key highlights:

Virtual server CPU and memory limits have been increased to 32 and 80GB respectively far higher than competing visualization products. Additionally per guest limits for disks and network interfaces have also been increased.

The performance and range of par visualized device drivers has been increased, enabling ever more applications to be deployed on virtual servers with near bare metal performance.

Next generation hardware enablement: The soon to be released new linux platform is the next generation of Intel x86 64 hardware. Support for the visualization and performance features provided by this processor combined with numerous optimizations have already demonstrated exceptional performance over previous processor generations in internal Red Hat testing.

Open JDK: Red Hat is taking a leadership position in Red Hat Enterprise Linux 5.3 by shipping the first productized implementation of Open JDK. It has passed the full Java SE 6 TCK and is compatible with all applications written for Java SE 6 and previous versions.

With the integration of JDK, Red hat linux is the first enterprise ready solution with a fully open source Java stack when combined with JBoss enterprise application platform. System tap: This is an application development tool targeted at dynamically allowing applications to be monitored and diagnosed.

With this system, support for user mode (i.e. application level) tracing and profiling is provided for the first time adding to the kernel mode support that was provided in earlier releases. The operative word here being dynamically, as the key benefit of System tap is the ability, on the fly, to add instrumentation, probe points, and memory tracking to running applications.

This is key to enable identification and resolution of issues in live environments. Therefore, system is extremely powerful both for user and kernel space. Disk encryption is the characteristic especially critical for laptop use, but also becoming increasingly important in server deployments.

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