15-02-2005
 Red Hat Enterprise Linux AS (formerly Red Hat Linux Advanced Server) is the core operating system and infrastructure enterprise Linux solution. Supporting the largest commodity-architecture servers--with up to eight CPUs and 16GB of main memory--and available with the highest levels of support, Red Hat Enterprise Linux AS is the ultimate solution for large departmental and datacenter servers.
Red Hat Enterprise Linux AS is supported by an extensive range of applications from leading ISVs, and has garnered impressive industry-standard benchmark results. Red Hat Enterprise Linux is certified on systems provided by Dell, HP, and IBM.
Also, Red Hat Enterprise Linux AS is certified by DISA (US Defense Information Systems Agency) as COE (Common Operating Environment) Compliant. It is the only Linux distribution to have received this certification.
All products in the Red Hat Enterprise Linux family are based on a common software core--kernel, libraries, development toolchain. This provides a homogeneous environment ideal for simplifying multi-system and client-server configurations. The immediate benefit: Red Hat Enterprise Linux applications run seamlessly and system management procedures are standardized across the entire family.
While the supported capabilities of individual Red Hat Enterprise Linux products are focused on each product's specific role, features common to all include:
- Asynchronous I/O support: Applications no longer need to pause after issuing read I/Os until they are complete.
- Increased SMP granularity: Particularly in the SCSI I/O subsystem. Permits increased I/O throughput in SMP systems with multiple I/O adapters.
- SMP Scheduler enhancements: Support process-CPU affinity. Improves performance by increasing the CPU cache hit-rate and greatly reducing spinlock contention in SMP systems.
- Bounce Buffer Elimination: Drastically reduces I/O-related memory copy operations in large memory systems (>1GB memory).
- LSB (Linux Standard Base) interface conformity: Supports the industry-wide Linux API standard.
- Multiple enhancements to improve database performance
Enterprise-focused release cycle
Red Hat Enterprise Linux family products have a release cycle specifically designed to provide a stable platform for all phases of an enterprise IT deployment. Major Red Hat Enterprise Linux releases will occur approximately every 12-18 months. This allows ISVs to focus on a common, stable platform and customers to effectively plan migration and upgrade cycles.
Key certification platform
Red Hat actively works to certify leading industry ISVs and OEMs for comprehensive application and hardware support for Red Hat Enterprise Linux products. Here are just some of the vendors supporting Red Hat Enterprise Linux:
- Oracle
- Dell
- HP
- VERITAS
- BMC Software
- Borland
- Computer Associates
- BEA
- Novell
- SAP
- Checkpoint
- IBM: Tivoli, Lotus, DB2, Websphere
- Legato
- Softimage
- Alias | Wavefront
- Synopsys
- Tibco
- Rogue Wave Software
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