Red Hat ENTERPRISE LINUX 3 - USING GCC Manuel d'utilisateur télécharger pdf (Page 6)

• Lazy-mountandunmount–thisgreatlyreducesthenumberofsimultaneousmountson

clientsystems,therebyallowingefcientdeploymentinlargeNFSinfrastructures.

• MapscanbesharedwithSunSolaris,HP/UX,IBMAIX,andotherUNIXsystems.

• AuthenticatedbindswithLDAPserversusingKerberos,Digest-MD5,etc.

Samba

RedHatEnterpriseLinuxincludesSambatoprovideinteroperabilitywith

MicrosoftWindowsleandprint(CIFS)systems.Newfeaturesallowgreatlyimproved

integrationwithMicrosoftActiveDirectorywith,forexample,moreconsistentuserand

groupmapping,andbettersupportfornestedgroups.Extensivedevelopmentworkand

numerousenhancementshaveimprovedthequalityandstabilityoftheentiresubsystem.

FS-Cache

FS-Cacheisanewlesystemthatpermitsdatalocatedonaremotesystem,

suchasanNFSserver,tobecachedonalocalstoragedevice.Formemory-constrainedor

data-intensivesystems,thiseliminatestherequirementtorepeatedlyreadthesamedata

fromtheremotesystem.Theneteffectisincreasedclientperformanceandreduced

serverandnetworkload.

NFS

RedHatEnterpriseLinux5providesthelatestNFSv4implementation,

offeringsignicantenhancementsinperformance,stabilityand,withSecureNFS,security

andserver-sidedelegation.

AllversionsofNFScannowusetheFS-Cachefacility.Filesystemsmountedwiththenew

‘fsc’mountoption,willcachedatapagesthatarereadfromtheserver.Notethatdata

pageswillstillexistafterthearebootorthelesystemisunmounted/mounted,assuming

thedataontheserverhasnotchanged.

Global File System, Logical Volume Manager,

and Distributed Lock Manager

Inordertosimplifyseamlesssystemgrowthandvirtualizationadoption,the

baseRedHatEnterpriseLinux5productincludesstandalone(singlesystem/guest)

versionsofthreedistributedsystemtechnologies:

• LogicalVolumeManager(LVM)–forcreatingandmanagingpoolsofvirtualstorage

devices

• GlobalFileSystem(GFS)–ahighperformance,scalable,POSIX-compliantlesystem.

GFSprovidessupportforlesystemswithupto8EBtheoreticalcapacity(with25TB

certiedcapacityatRedHatEnterpriseLinux5launch).

• DistributedLockManager(DLM)–asophisticatedapplicationsynchronizationinterface.

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

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

WindoWS interoperability

performanCe

uniX interoperability

diStributed SyStemS

SCalability & performanCe

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