Red Hat ADD-ONS - DATASHEET FOR ENTERPRISE LINUX 6 User manual

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WORKLOAD AND MISSION8CRITICAL PLATFORM ENHANCEMENTS
In conjunction with Red Hat® Enterprise Linux®, Red Hat offers a portfolio of add;ons to extend
the features of your Red Hat Enterprise Linux subscription. Add;ons to Red Hat Enterprise
Linux tailor your application environment to suit your particular computing requirements.
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ADD8ON OPTIONS FOR AVAILABILITY MANAGEMENT
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Red Hat’s High Availability Add;On provides on;demand failover services between nodes within
a cluster, making applications highly available. The High Availability Add;On supports up to 16
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for virtual guests. The High Availability Add;On also includes
failover support for off;the;shelf applications like Apache,
MySQL, and PostgreSQL.
When using the High Availability Add;On, a highly available
service can fail over from one node to another with no appar;
ent interruption to cluster clients. The High Availability Add;On also ensures data integrity when
one cluster node takes over control of a service from another cluster node. It achieves this by
promptly evicting nodes from the cluster that are deemed to be faulty using a method called
“fencing” that prevents data corruption.
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ADD#ONS FOR
RED HAT ENTERPRISE LINUX

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ADD;ONS FOR RED HAT ENTERPRISE LINUX 61&2&3!442
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the same storage device over a network. By providing consistent storage across a cluster of
servers, Red Hat’s Resilient Storage Add;On creates a pool of
data that is available to each server in the group, but which
also is protected if any one server fails.
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capabilities for improving resiliency to system failure. This
add;on includes the Global File System 2 (GFS2) for supporting
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all nodes within that cluster. Each server in a cluster has direct access to a shared block device
over a local storage area network (SAN) of up to 100 terabytes. Data and cache consistency is
ensured using a cluster;wide locking mechanism called distributed lock manager (DLM) to arbi;
trate access to the storage. Each member of the cluster thus has direct access to the same stor;
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Red Hat’s Network Load Balancer Add;On provides redundancy for web serving, databases, net;
working, and storage. By creating a virtual address that can be directed to a real server for load
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add or remove servers or change balancing algorithms using
a browser;based graphical user interface (GUI).
The Network Load Balancer Add;On provides support for trans;
mission control protocol (TCP) and user datagram protocol
(UDP) load balancing independent of applications. It is com;
posed of two major components: the Linux Virtual Server (LVS)
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ADD8ON OPTIONS FOR SCALABILITY
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advanced features such as 64;bit journaling and advanced
locking algorithms.
The Scalable File System Add;On uses the XFS®oOHV\VWHP
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on a single host, also performs well on smaller systems run;
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1&2&3!442 ADD;ONS FOR RED HAT ENTERPRISE LINUX 6
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Red Hat’s High Performance Network Add;On should be deployed when low network latency
and high capacity are important. It delivers remote direct memory access over converged
Ethernet (RoCE). Because RoCE bypasses system and kernel calls to place data directly into
remote system memory with less CPU overhead, the High Performance Network add;on is ideal
for high;speed data processing applications, for speeding up cluster locking, or for scaling up
applications on distributed systems without investing in spe;
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The High Performance Network Add;On bypasses system and
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and places data directly into remote system memory with less
CPU overhead. Customers can leverage converged Ethernet
network designs to consolidate data and storage networks while reducing their cabling infra;
structure, port counts, and associated costs.
ADD8ON OPTIONS FOR MANAGEMENT
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Red Hat’s Smart Management Add;On, when coupled with Red Hat Network Satellite, allows you
to manage the complete lifecycle of your Red Hat Enterprise Linux systems.
The Smart Management Add;On includes Red Hat Network
Satellite management and provisioning modules that allow
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Red Hat Enterprise Linux development, test, and produc;
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Network Monitoring module. By proactively automating routine tasks such as patch manage;
ment, you’ll have time to concentrate on other, higher value;added tasks.
ADD8ON OPTION FOR LIFECYCLE MANAGEMENT
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The standard seven;year lifecycle for Red Hat Enterprise Linux ensures application binary inter;
face (ABI) and application programming interface (API) stability throughout the support period
for Red Hat Enterprise Linux with regular delivery of technology updates and security packages.
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period of time, Red Hat offers the Extended Update Support Add;On, which extends the support
period of a Red Hat Enterprise Linux update for 18 months and
delivers overlapping release support to give enterprise cus;
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Red Hat Enterprise Linux add;ons are another example of
Red Hat’s commitment to engage with customers and our
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to meet the needs of all IT environments.

Copyright © 2010 Red Hat, Inc. Red Hat, Red Hat Enterprise Linux, the Shadowman logo, JBoss, MetaMatrix, and RHCE are trademarks of
Red Hat, Inc., registered in the U.S. and other countries. Linux® is the registered trademark of Linus Torvalds in the U.S. and other countries.
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High Availability Red Hat Enterprise Linux Server,
Red Hat Enterprise Linux Server for SAP applications
Resilient Storage Red Hat Enterprise Linux Server,
Red Hat Enterprise Linux Server for SAP applications,
Red Hat Enterprise Linux for HPC Head Node
Network Load Balancer Red Hat Enterprise Linux Server,
Red Hat Enterprise Linux Server for SAP applications
Scalable File System Red Hat Enterprise Linux Server,
Red Hat Enterprise Linux Server for SAP applications,
Red Hat Enterprise Linux for HPC Head Node,
Red Hat Enterprise Linux for HPC Compute Node
High Performance Network Red Hat Enterprise Linux Server,
Red Hat Enterprise Linux Server for SAP applications,
Red Hat Enterprise Linux for HPC Head Node
Smart Management Available on all versions of Red Hat Enterprise Linux
Extended Update Support Red Hat Enterprise Linux Server,
Red Hat Enterprise Linux Server for SAP applications,
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Red Hat Enterprise Linux for IBM POWER
For more information on
these Red Hat Enterprise
Linux add;on offerings, visit
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