Dab tsi yog lub server tsis tu ncua?
Dab tsi yog lub server tsis tu ncua?

Video: Dab tsi yog lub server tsis tu ncua?

Video: Dab tsi yog lub server tsis tu ncua?
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A redundant server yog a server tam sim no khiav 0 lub koob yees duab. Thaum nrhiav tau ib server ua down,a redundant server yog siv los hloov lub down servers koob yees duab thiab ntaus ntawv ua nyob rau hauv nws tag nrho. Lub ntsiab lus, tag nrho cov koob yees duab yuav raug tsiv thiab khiav ntawm lub redundant server.

Tsuas yog li ntawd, lub ntsiab lus ntawm redundancy yog dab tsi?

Rov qab yog ib tug system tsim nyob rau hauv uas acomponent yog duplicated ces yog hais tias nws tsis muaj ib tug thaub qab. Rov qab muaj qhov tsis zoo connotation thaum qhov duplication tsis tsim nyog lossis tsuas yog qhov tshwm sim ntawm kev npaj tsis zoo.

Tsis tas li ntawd, dab tsi yog lub server tsis ua haujlwm? Failover yog hom kev ua haujlwm thaub qab uas ua haujlwm ntawm lub cev tivthaiv (xws li processor, server , network, los yog database, piv txwv li) yog assumed bysecondary system Cheebtsam thaum lub ntsiab tivthaiv yuav tsis muaj los ntawm tsis ua hauj lwm los yog teem downtime.

Yog li ntawd, dab tsi yog qhov txawv ntawm kev poob thiab redundancy?

Failover yog muaj redundancy ua rau hauv ib puag ncig, yog li yog tias lub server tsis ua haujlwm, lwm tus neeg rau zaub mov yuav siv qhov chaw. Lwm tus ua tsis tiav txoj kev yog kom muaj cov khoom siv ntxiv uas tau siv los ua thaub qab rau lub hom phiaj no tab sis tsis tau siv thaum thawj tus neeg rau zaub mov tau nce thiab khiav (ua haujlwm / passive mus kom ze).

Dab tsi yog ob qho txiaj ntsig ntawm kev ua haujlwm tsis tu ncua?

Thaum lub ntsiab qhov zoo ntawm replication yog lub peev xwm los faib cov kev nyeem ntawv hla ntau lub servers, qhov no qhov zoo ua rau ntxiv nyiaj siv ua haujlwm nyob rau hauv cov nqe lus ntawm servermanagement. Replication kuj tseem muaj scalability ntawm kev nyeem ntawv thiab, nrog rau kev tsim kom zoo, scalability ntawm kev sau ntawv, tsis pub dhau qhov txwv.

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