Yuav tshem tawm coding yog dab tsi?

Cov txheej txheem:

Yuav tshem tawm coding yog dab tsi?
Yuav tshem tawm coding yog dab tsi?

Video: Yuav tshem tawm coding yog dab tsi?

Video: Yuav tshem tawm coding yog dab tsi?
Video: Leng Yang - Yog Vim Dab Tsi (Official Full Song | Nkauj Tawm Tshiab) 2020/05/24 2024, Hlis ntuj nqeg
Anonim

Nyob rau hauv txoj kev xav coding, tus lej erasure yog ib qho kev ua yuam kev rau pem hauv ntej kev kho qhov yuam kev raws li qhov kev xav ntawm me ntsis erasures, uas hloov cov lus ntawm k cov cim rau hauv cov lus ntev nrog n cov cim xws li cov lus qub tuaj yeem rov qab tau los ntawm cov khoom siv. ntawm cov cim. Qhov feem r=k/n yog hu ua tus lej lej.

Yuav tshem tawm coding ua haujlwm li cas?

Erasure coding ua haujlwm los ntawm kev faib ib chav tsev ntawm cov ntaub ntawv, xws li cov ntaub ntawv lossis khoom, ua ntau ntu (cov ntaub ntawv thaiv) thiab tom qab ntawd tsim cov ntu ntxiv (parity blocks) uas tuaj yeem siv rau cov ntaub ntawv rov qab… Yog tias muaj qhov xwm txheej no tshwm sim, cov parity fragments tuaj yeem siv los tsim kho cov ntaub ntawv tshiab yam tsis muaj cov ntaub ntawv poob.

Yuav ua li cas rau kev tshem tawm coding?

Yuav tsum tau tshem tawm coding

  • Cov khoom loj dua 1 MB qhov loj. …
  • Lub sijhawm ntev lossis txias cia rau qhov tsis tshua tau muab cov ntsiab lus.
  • Cov ntaub ntawv muaj ntau thiab kev ntseeg tau.
  • Kev tiv thaiv kev ua tiav ntawm qhov chaw thiab ntawm qhov tsis ua tiav.
  • Storage efficiency.

RAID 5 erasure coding yog dab tsi?

RAID 5 lossis RAID 6 tshem tawm coding ua kom vSAN zam qhov tsis ua haujlwm txog li ob lub peev xwm hauv cov ntaub ntawv… Koj tuaj yeem teeb tsa RAID 5 lossis RAID 6 ntawm tag nrho-flash pawg nrog rau 6 lossis ntau qhov yuam kev. RAID 5 lossis RAID 6 erasure coding yuav tsum muaj peev xwm ntxiv los tiv thaiv koj cov ntaub ntawv dua li RAID 1 mirroring.

Nutanix erasure coding yog dab tsi?

Erasure Coding yog dab tsi? Erasure coding nce lub peev xwm siv tau ntawm ib pawgHloov cov ntaub ntawv rov ua dua, tshem tawm coding siv cov ntaub ntawv sib luag los tsim cov ntaub ntawv thaum muaj qhov tsis ua haujlwm disk. Lub peev xwm txuag ntawm erasure coding yog ntxiv rau deduplication thiab compression txuag.

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