Cloud Computing vs Virtualization
Could Computing thiab Virtualization yog cov ntsiab lus muaj feem xyuam hauv kev ua kom zoo ntawm IT infrastructure. Virtualization yog ib qho cuab yeej siv hauv Cloud Computing lub tswv yim. Virtualization yog siv tib lub khoos phis tawj kho vajtse los tsim ntau lub virtual servers raws li qhov xav tau thiab xav tau. Piv txwv li xav tias koj xav tau Windows Server thiab Linux server rau ntau lub hom phiaj, koj tuaj yeem tsim qhov no hauv tib lub cev server los ntawm kev siv cov txheej txheem Virtualization.
Virtualization (Soft Virtualization vs Hard Virtualization)
Virtualization yog siv tib lub cuab yeej kho vajtse los tsim ntau lub virtual servers raws li qhov yuav tsum tau ua thiab xav tau. Yog tias peb muab qhov no tso rau hauv txheej txheej txheej txheej txheej 1 yuav yog SAN (Storage Area Network), txheej 2 yuav yog hardware servers (blade servers) rau kev faib cov peev txheej thiab cov txheej txheem saum toj kawg nkaus yuav yog server servers. Virtualization software zoo li Citrix, VMware's vSphere, Xen, Microsoft Hyper V, Sun xVM yuav khiav ntawm cov txheej txheem saum toj kawg nkaus uas yog hu ua host servers. Cov neeg rau zaub mov khiav txhua qhov kev khiav haujlwm thiab cov servers virtual tuaj yeem ua rau ntawm txhua qhov kev khiav haujlwm raws li qhov xav tau.
Virtualization txheej txheem tau qhia kom ua tiav qhov kev siv tau zoo ntawm cov khoom siv kho vajtse thiab txo cov kev saib xyuas thiab cov nqi cuam tshuam. Virtual sever nrog tib lub teeb tsa raws li cov neeg rau zaub mov mob siab rau, yuav muab qhov kev ua tau zoo npaum li cas rau cov neeg rau zaub mov tuaj yeem ua tau yog tias xav tau. Cov txheej txheem hais saum toj no yog hu ua Soft Virtualization. Muaj lwm cov txheej txheem hu ua Hard Virtualization uas yog ua los ntawm kev faib cov peev txheej thaum tsim lub server. Qhov no tuaj yeem ua tiav ntawm cov npe servers tsuas yog nrog Pre OS. Qhov no yog qhov kev faib tawm ntawm lub cev ntawm cov peev txheej thiab yuav tsis ua tiav qhov kev siv ntau tshaj plaws.
Cloud Computing
Huab xam lub tswv yim yog xa cov servers virtual nrog cov ntsiab lus tshwj xeeb nrog kev ua haujlwm tshwj xeeb, kev siv thiab kev pabcuam. Lub cev qhov chaw ntawm cov cores (Processors los yog xam lub zog), software, cov ntaub ntawv nkag mus thiab chaw cia yog tsis tsim nyog rau cov neeg siv. Cloud Computing siv cov txheej txheem Virtualization txhawm rau ua tiav nws cov txheej txheem.
Basically Cloud Computing yog ib phau ntawm Virtualization Technique, SOA (Service Oriented Architecture), Autonomic thiab Utility Computing.
Lub tswv yim kev lag luam tom qab qhov no yog, theej muaj txhua lub cev server rau txhua qhov kev pabcuam lossis cov ntawv thov ntawm qhov chaw, koj tuaj yeem ntiav cov neeg tawm sab nraud lossis tawm ntawm qhov chaw virtual server los ntawm huab huab muab kev pabcuam. Qhov kev pab cuam tawm ntawm qhov chaw no tsis xav tau lub zog txiv neej rau kev saib xyuas los ntawm lub tuam txhab pom. Lub tuam txhab tuaj yeem txheeb xyuas qhov kev xav tau tshwj xeeb thiab muab rau tus neeg muab kev pabcuam huab lossis suav cov kev xav tau thiab xaj rau huab server online.
Cloud Computing suav nrog IaaS thiab SaaS (IasS vs SaaS). IaaS txhais tau tias Infrastructure li Kev Pabcuam thiab SaaS yog Software ua Kev Pabcuam. Ntau dua li kev nqis peev ntawm Servers, SAN, Softwares, Rack Space, Network Devices, Bandwidth, kev saib xyuas cov neeg ua haujlwm nws zoo dua los yuav cov kev pabcuam huab server los ntawm cov chaw muab kev pabcuam huab. Hauv cov qauv no tsis tas yuav nqis peev nyiaj ntau hauv kev tsim kho vaj tse thiab tsis tas yuav kho tus nqi kho lossis kho tus nqi.
Software as a Service (SaaS) yog lub tswv yim los muab cov kev pabcuam software rau kev koom tes ntawm virtual IaaS platform. Cov ntaub ntawv teeb tsa lossis binaries yuav khaws cia rau hauv lub server server qhov twg software virtualization tab tom khiav thiab yuav raug ntsia rau. virtual servers raws li thiab thaum xav tau lossis thov.
Yog li nrog IaaS thiab SaaS, Huab suav cov chaw muab kev pabcuam yuav tsum muaj peev xwm muab tag nrho cov kev daws teeb meem hauv ib lub thawv virtual raws li tus neeg siv khoom xav tau. Piv txwv li yog tias koj xav khiav ib tus neeg rau zaub mov rau Microsoft Exchange Server rau cov neeg ua haujlwm xa ntawv lub hom phiaj, theej yuav lub cev server thiab siv nyiaj ntau dua koj tuaj yeem yuav lub thawv huab nrog MS Exchange nruab nrog kev sib txuas hauv internet lossis VPN txuas rau cov koom haum network.
Qhov Sib txawv Ntawm Huab Kev Sib Tw thiab Virtualization
(1) Virtualization yog ib qho txuj ci tab sis Cloud Computing yog lub tswv yim siv cov txheej txheem Virtualization.
(2) Virtualization tuaj yeem ua tiav sab hauv ntawm qhov chaw thiab cov peev txheej kev koom tes tshwj tsis yog kho vajtse tseem muaj tab sis nyob rau hauv Cloud Computing yuav tsis muaj peev txheej sab hauv.
