Dab tsi yog pawg database SQL Server?
Dab tsi yog pawg database SQL Server?

Video: Dab tsi yog pawg database SQL Server?

Video: Dab tsi yog pawg database SQL Server?
Video: What is Database & SQL? 2024, Kaum ib hlis
Anonim

Ib Microsoft SQL Server Cluster tsis muaj dab tsi ntau tshaj li kev sau ntawm ob lossis ntau lub cev servers nrog zoo tib yam kev nkag mus rau kev sib koom cia uas muab cov khoom siv disk xav tau los khaws cov database cov ntaub ntawv. Cov no servers hu ua "nodes".

Ib yam li ntawd, dab tsi yog pawg hauv database?

Database Clustering yog cov txheej txheem ntawm kev sib txuas ntau dua ib lub servers lossis piv txwv txuas ib leeg database . Qee lub sij hawm ib tus neeg rau zaub mov yuav tsis tsim nyog los tswj tus nqi ntawm cov ntaub ntawv lossis tus naj npawb ntawm kev thov, uas yog thaum Cov Ntaub Ntawv Pawg yog xav tau.

Kuj Paub, dab tsi yog active thiab passive pawg hauv SQL Server? Active / Passive hais txog muaj ntau lub node pawg qhov twg ib lub node ua haujlwm rau database(s), thaum lwm qhov node muaj los nqa lub load yog tias thawj node ua tsis tiav. Raws li piv txwv ntawm Active / Active , xav txog cov hauv qab no: 2 lub khoos phis tawj teeb tsa hauv Windows Server Failover Pawg , Node "A" thiab Node "B".

Ib tug kuj yuav nug, dab tsi yog pawg hauv SQL nrog piv txwv?

Tsim CLUSTER . Siv CREATE CLUSTER nqe lus los tsim ib pawg . A pawg yog ib qho khoom siv schema uas muaj cov ntaub ntawv los ntawm ib lossis ntau lub rooj, tag nrho cov uas muaj ib lossis ntau kab hauv ntau. Oracle Database khaws cia ua ke tag nrho cov kab los ntawm txhua lub rooj uas sib koom ua ke pawg tus yuam sij.

SQL Server failover pawg ua haujlwm li cas?

Txhais: A faiv fab pawg hauv paus muab koj lub peev xwm kom muaj tag nrho cov ntaub ntawv rau a SQL Server piv txwv ntsia rau hauv ib yam dab tsi zoo li ib qho kev qhia uas ua tau nkag tau los ntawm qhov sib txawv servers . Nws yuav ib txwm muaj tib lub npe piv txwv, SQL ntawv Cov haujlwm ua haujlwm, Txuas Cov servers thiab Logins nyob qhov twg koj nqa nws.

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