Google Search Appliance Upgrade and Migration Handbook Manuel d'utilisateur télécharger pdf (Page 17)

● Replacingafailedproductionsearchappliance

● Movingasearchappliancetoanotherlocation

Renewingsearchappliances

ThemostcommonscenarioformigratingaGSAisduringtherenewalofaGSAlicense.Sincenewand

morepowerfulhardwareisprovidedwitheachrenewal,migrationplanningisacriticalcomponentofthe

renewalprocess.

Witheveryrenewalofappliances,adecisionmustbemadeonhowtomigratefromexistingtonew

appliances.Thefollowingtableoutlinestheadvantagesanddisadvantagesofeachmigrationmethod,where

newappliancesareofadifferentversiontoexistingappliances.

Advantages

Disadvantages

Migratingindexand

configurations

Ensurescompletesearchindex

replication

Doesnotrequirereindexingof

content*

Mirroringindexisfasterthan

recrawlingcontent

Requiresupgradingexisting

GSAstosameversionasnew

GSAs

Requiresappropriatelicense

capacity**

Morecomplexofaprocess,

particularlywithdistributed

architectures

Migratingconfigurationsonly

Allowscontroloverwhat

contentisindexedonnewGSAs

CanbeperformedonGSAs

withdifferingversions

MinimalimpacttoexistingGSA

configurations

Requiresreindexingofall

content(canbetimeintensive)

Createsadditionalloadon

contentserversduringrecrawl

Mayrequireadditional

connectorandfeedclientstobe

configured

*Reindexingofcontentmayberequiredinsomecases(eg.newfeaturesrequiringreindex)

**Migratingindexviamirroringcanbeperformediflicenseisincreasedonnewappliances,butnotif

decreased

PromotingaGSAconfigurationfromoneenvironmenttoanother

Formigratingbetweenenvironments(eg.testtoproduction),amanualconfigurationapproachis

recommended,sinceservernamesandURLstocrawlwillusuallyvary.Anexportofsimilarconfigurations

(eg.frontendXSLTandcollectiondefinitions)shouldbeperformed,combinedwithmanualentryofsettings

intheadminconsole.

Increasinglicensecount

InmostcaseswhereaGSAlicenselimitisincreased,thenewlicensefilecanbeappliedtotheexisting

appliance,withoutanyhardwaremigrationbeingnecessary.IfalicenseisincreasedaspartofaGSA

renewalhowever,certainconsiderationswillneedtobemade,dependingontherequiredchangesto

deploymentarchitecture.

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Google Search Appliance Upgrade and Migration Handbook Manuel d'utilisateur Page 17

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