Red Hat ENTERPRISE LINUX 3 - USING GCC Uživatelský manuál stáhnout pdf (Strana 3)

BasedontheLinux2.6.18kernel,RedHatEnterpriseLinux5representsthemoststable

andmaturecommercialLinuxavailable.ItistherstLinuxproducttodeliveramature,

commercial-strength,ready-to-deployvirtualizationcapability.RedHatEnterpriseLinux5

includestechnologiesthathavebeenextensivelytestedinFedoraProject,createdby

RedHatincollaborationwithmanycontributingopensourcepartnersandthecommunity.

Virtualization

RedHatEnterpriseLinux5providessophisticatedvirtualizationcapabilities.Thebenetsof

virtualizationarebeingrapidlyrealizedbyITdepartmentseverywhere.Exampleusesinclude:

•Serverconsolidation-Withvirtualizationitispossibletoconsolidatetheloadofseveral

lightlyloadedserversontoone.

•Hardwareabstraction-Virtualizationmakesiteasytodeployanolderoperatingsystem

andapplicationonnewhardware.

•Resourcemanagementandhighavailability-Theabilitytomovevirtualizedoperating

systemsandtheirapplicationsbetweensystemsenablesworkloadstobehandledbythe

mostappropriatesystemandcontinuedoperationduringmaintenanceperiods.

AllRedHatEnterpriseLinuxserversoffervirtualizationcapabilities,usingtechnologybased

ontheopensourceXenproject.ARedHatEnterpriseLinuxhostcansupportpara-virtualized

guestsrunningRedHatEnterpriseLinux4.5and5.Itcanalsosupportfullyvirtualizedguests

runningRedHatEnterpriseLinux3andthird-partyoperatingsystems.Refertohttp://www.

redhat.comforthird-partyoperatingsystemsupportinformation.Ingeneral,para-

virtualizationofferssuperiorperformanceandrichermanagementcapabilitiesthanfull

virtualization,whilefullvirtualizationsupportsawiderrangeofguest

environments.Para-virtualizedguestscanbeconguredonanyserversystem

(32-bitx86withPAEsupportor64-bitx86)whilefullyvirtualizedguestsupport

requireshardwarefeaturesprovidedbyIntelVirtualizationTechnologyandAMD-

Vprocessors.Fullandpara-virtualizedguestscanbemixedonthesamephysical

system.

RedHatEnterpriseLinuxandRedHatEnterpriseLinuxAdvancedPlatformoffer

differinglevelsofvirtualizationcapabilities:

•Red Hat Enterprise Linux Advanced Platform:Providesacomplete,integrated

solutionbycouplingserverandstoragevirtualizationintoasingleproduct.For

mostproductionenvironments,theabilitytovirtualizetheserveroperating

systemdoesnotprovidethelevelofexibilityoravailabilitydesired,sincethe

underlyingstorageinfrastructureisnotconsistentacrossvirtualorphysical

servers.Storagevirtualizationaddressesthisissuebyensuringthatstorage

logicalvolumesandlesystemsareconsistentandcanbesharedbyallservers.

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What’s New in Red Hat Enterprise Linux 5 

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