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Red Hat Operating Systems
Red Hat Enterprise Linux AS - For your mission-critical
Red Hat Enterprise Linux ES - For your small and mid-range servers
Red Hat Enterprise Linux WS - For your technical & design workstation clients
Red Hat Desktop - For your secure, managed clients
Red Hat Enterprise Linux ES
Red Hat Enterprise Linux ES provides the core operating
system and networking infrastructure for a wide range of entry-level
and departmental server applications. It is ideally suited for network,
file, print, mail, Web, and custom or packaged business applications.
Red Hat Enterprise Linux ES is fully compatible with the Red Hat Enterprise
Linux family, providing the stability, performance, and support needed
for critical application deployments.
While Red Hat Enterprise Linux ES provides the same core capabilities
as Red Hat Enterprise Linux AS, it supports small/mid-size X86-based
systems with up to two CPUs and 8GB of main memory.
Red Hat Enterprise Linux AS is supported by an extensive range of
applications from leading ISVs, and is certified on systems provided
by Dell, HP, IBM, Sun, Bull, Fujitsu-Siemens, and Hitachi. It has garnered
impressive industry-standard benchmark results
All products in the Red Hat Enterprise Linux family are based on a
common software core--kernel, libraries, development toolchain, and
utilities. This provides a homogeneous environment ideal for simplifying
multi-system and desktop-to-datacenter configurations. The immediate
benefit: simplified deployment of distributed applications, and a consistent
environment for users and system administrators across the entire family.
New in Red Hat Enterprise Linux, Version 3
Introduced in September 2003, Red Hat Enterprise Linux, version 3,
includes a broad range of new features:
- Support for multiple architectures: Intel X86, Intel Itanium, AMD
AMD64 and IBM zSeries, POWER Series, and S/390. (With Update 2, delivered
in May 2004, support for Intel EM64T was added)
- 4-4 memory split: Increased kernel & user address space for X86 systems,
allowing support for 64GB of main memory and larger user applications.
- Native Posix Thread Library: A new high-performance multi-threading capability
provides improved performance for multi-threaded applications.
- Based on Linux 2.4.21 kernel: Red Hat Enterprise Linux uses the latest stable
Linux kernel with numerous additions from the Linux 2.5/2.6 kernels.
- Improved scalability: Support for larger SMP, memory and I/O systems allows
version 3 to support servers approximately twice the size of version 2.1.
- Forward compatibility: Version 3 includes compatibility libraries so it can
run version 2.1 applications without modification.
- Standards and Certification: LSB 1.3 and NIAP Common Criteria. Section 508
support
- Improved desktop: Includes Red Hat's Bluecurve graphical user interface,
and a comprehensive set of personal productivity applications.
- Enhanced security: Includes several new security features, including support
for file system ACLs.
- Bundled Stronghold: Red Hat's secure web server solution, previously available
as a separate layered product for Enterprise Linux AS, has been updated to
Apache version 2 and included as part of the base Red Hat Enterprise Linux
product set.
- Improved compiler/tools: Includes GCC 3.2 and debugging/profiling tools.
- Logical Volume Manager: Provides enterprise-strength storage management.
- Diskless systems: Supports deployment of diskless clients.
- Enhanced Java: Java implementations from BEA and IBM
- Enhanced networking: Includes numerous features to improve stability & performance.
- Support for Samba 3 provides numerous new features:
- Greatly improved interoperability with Microsoft Active Directory. Samba
3.0 is able to join an ADS realm as a member server and authenticate users using LDAP/Kerberos
- Improved Windows 2000/XP/2003 printing support including publishing
printer attributes in active directory
- Support for migrating from a Windows NT 4.0 domain to a Samba
domain and maintaining user, group and domain SIDs
- Support for establishing trust relationships with Windows NT
4.0 domain controllers
- Support for client and server SMB signing
to ensure compatibility with default Windows 2003 security settings
- Improved ACL mapping
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