1.Definition
Informationstorageistosavetheobtainedorprocessedinformationforfutureapplication.
Informationstorageisnotanisolatedlink,itrunsthroughtheentireprocessofinformationprocessing.
2.Storagemedia
Itisdividedintopaperstorageandelectronicstorage.Differentinformationcanbestoredondifferentmedia,andthesameinformationcanalsobestoredondifferentmediaatthesametime,withdifferenteffects.Forexample,voucherfilesneedtobestoredinpapermedia,butalsoneedtobestoredelectronically;theinventoryaccountsofarchivematerials,equipmentormaterialsintheenterprisestructureandpersonnel,bothpaperandelectronicstoragearesuitableforarchivingandonlineretrievalandinquiries.
1)Paper
Advantages:largestock,smallsize,cheap,goodpermanentpreservation,anddifficulttopaintandmodify.Itisaseasytostorenumbers,textsandimages.
Disadvantages:Thetransmissionofinformationisslowanditisinconvenienttoretrieve.
2)Film
Advantages:highstoragedensity,easytoquery.
Disadvantages:Interfacedevicesmustbeusedwhenreading,whichisinconvenientandexpensive.
3)Computer
Advantages:Theaccessspeedisextremelyfast,andtheamountofstoreddataislarge.
3.Function
Thestorageofinformationisthebasisforthetransmissionofinformationinthetimedomain,aswellasthebasisforthefurtherintegration,processing,accumulationandregenerationofinformation.Itisimportantinhumanandsocialdevelopment.Significance.Papermaking,printing,photography,cameratechnology,audioandvideotechnology,aswellasmagneticdisks,tapes,andopticaldisksarealltechnologiesgeneratedbyinformationstoragedrives.Theseman-madeinformationstoragetechnologiesanddevicesnotonlyhavethepotentialtoexpandthestoragecapacityofthehumanbrainintermsofstoragecapacityandaccessspeed,butalsohavemoreimportantimplications:first,theytransferinformationfrompeople’ssubjectiveknowledgeoftheworldtothestorageoftheobjectiveworld.Inthemedium,theycanbepassedonfromgenerationtogenerationwithoutbeingrestrictedbyhumandeath;second,theycanbecomethesharedknowledgeofthehumansocietywithoutthelimitationofthepersonalbrain,andbecomeanimportantmediumforinformationexchangebetweenpeopleinthesociety.
Informationstorageisanimportantaspectoftheinformationsystem.Itisconvenienttomakefulluseofthecollectedandprocessedinformation,toensurethatitcanbetakenatanytime,andcreateconditionsforthemulti-functionaluseofunitinformation.However,informationcollection,processing,andstoragerequirecost,manpower,andmaterial.
4.Technologytrends
4.1Storagevirtualizationtechnology
Astheamountofinformationinthecomputercontinuestoincrease,thedirect-connectedlocalstoragesystemisnolongersufficientWiththemassivegrowthofbusinessdata,buildingasharedstoragearchitectureandrealizingunifiedstorage,managementandapplicationofdatahasbecomeanindustrydevelopmenttrend,andvirtualstoragetechnologyisgraduallybecomingthemainstreamtechnologyforsharedstoragemanagement.Storagevirtualizationtechnologyintegratesphysicalstoragedeviceswithdifferentinterfaceprotocolsintoavirtualstoragepool,andcreatesandprovidesvirtualstoragevolumesequivalenttolocallogicaldevicesforthehostasneeded.
Usingvirtualstoragetechnologycanrealizetheautomationandintelligenceofstoragemanagement:inthevirtualstorageenvironment,allstorageresourcesarelogicallymappedasawhole,whichisasingleviewoftransparentstorageforusers,Informationnetworkcentersystemadministratorsonlyneedtofocusonmanagingthestoragespaceitself.Allstoragemanagementoperations,suchassystemupgrades,changingRAIDlevels,initializinglogicalvolumes,creatingandallocatingvirtualdisks,storagespaceexpansion,andothercommonoperationsaremorethanbefore.easy.
Usingvirtualstoragetechnologycangreatlyincreasethestorageutilizationrate:thebiggestproblemthatplaguedtheinformationnetworkcenterinthepastistheinefficientuseofphysicalstoragedevices.Takingtraditionaldiskstorageasanexample,thediskcapacityutilizationofsomehostsTherateisnothigh.However,thespaceofsomehostsisofteninsufficient,sothatcustomershavetopurchasemorediskspacethantheactualamountofdata,whichcausesawasteofstoragespaceresources.Virtualstoragetechnologysolvesthiswasteofstoragespace,integratesthescatteredstoragespacesinthesystem,allocatesdiskspaceondemand,andcustomerscanmakefulluseofdiskcapacity,therebygreatlyimprovingtheutilizationofstorageresources.
4.2Hierarchicalstoragetechnology
Hierarchicalstoragemanagement(HSM)technologymeansthatthesystemstoresthedataonstoragedevicesofdifferentperformanceaccordingtotheimportanceofdata,accessfrequencyandotherindicators.Thestoragemethodofthesystem,real-timemonitoringofthefrequencyofdatausage,andautomaticallymigratelong-termidledatablockstolow-performancedisks,andputactivedatablocksonhigh-performancedisks.
4.3Dataprotectiontechnology
Dataprotectionsystemreferstotheconstructionofalocalbackupsystemandareliableremotedisasterrecoverysystem.Whenadisasteroccurs,theoriginalsystemcanberestoredinacomplete,fast,simple,andreliablemannerthroughthebackupdatatoavoiddamagetothebusinesssystemduetothedisaster.Theconstructionofthedataprotectionsystemisagradualprocess.
5.References
1)XueHuacheng.ManagementInformationSystem[M].TsinghuaUniversityPress,1999.
2)YangAihua,MiaoChangchuan.ModernMarketingManagement[M].TsinghuaUniversityPress,2004.
3)YanWei.ApplicationofInformationStorageandRetrievalTechnologyintheConstructionofScienceandTechnologyInformationResources.ChinaInformationHerald.2007No.12Period