Thiab koj paub dab tsi RAID-array?

Cov kev ntseeg tau ntawm cov ntaub ntawv cia - yog ib tug ntawm cov tseem ceeb tshaj plaws thiab cov tshuaj pleev teeb meem rau computer systems. Yog li ntawd, siv zog npaum thiab kev tshawb fawb tau teem nyob rau hauv no kev taw qhia, thiab raws li ib tug tshwm sim muaj ib tug technology ntawm kev tsim kho rau RAID-arrays, uas, txawm lub fact tias nws yog invented ib ob peb xyoos dhau los yog heev tseem ceeb thiab nyob hauv kev thov nyob rau hauv ib lub sij hawm.

Wb sim kom paub tseeb seb yog dab tsi zoo ntawm technology. Ua ntej, peb txhais tau lub ntsiab lub sij hawm. Yog li, RAID-array - nws yog zoo ntawm redundant txheej ywj siab disks uas yog siv lug txhim khu cov resiliency thiab cov hauj lwm zoo ntawm computer systems. Tus thawj yog tiav vim hais tias ntawm lub redundancy, thiab lub thib ob - vim lub simultaneous lag luam ntawm drives, uas tau raug tsim nyob rau hauv lub array. Nws yuav tsum tau muab sau tseg tias RAID-array system yog siv raws li ib tug tib disk los ntawm tus sis ntawm software thiab kev kho vajtse.

Yuav kom teb tau lo lus nug ntawm yuav ua li cas rau tsim ib tug RAID-array, nws yuav tsum tau hais tias muaj ntau ntau variations (ntau ntau), cov kev siv uas nyob rau ntawm lub koom haum ntawm lub discs. Zuag qhia tag nrho kev lag luam ntawm drives yuav txheej txheem nrog tog twg los ib tug thaum uas tig mus los yog ywj siab saib. Nyob rau hauv thawj cov ntaub ntawv, cov ntaub ntawv teev disk qhov chaw no tau muab faib mus rau hauv ib daim hlab (units), uas ces poob rau txawv lub cev disks (kev kawm kho kom zoo los ntawm simultaneous cov ntaubntawv povthawj siv ib daim hlab). Thaum nyeem ntawv tej ntaub ntawv raws li tag nrho cov ua hauj lwm yog blocks, uas muaj txhawb mus ntxiv rau kom cov efficiency ntawm xws li ib tug system. Ntxiv mus, qhov ntau drives, qhov kev kawm yuav tsum RAID-array. Tab sis muaj nuances. Nws yog tsis yooj yim sua mus npaj xws li ib tug system, yog hais tias tus tiv thaiv loj yog loj tshaj li qhov loj ntawm lub sau ntawv thov cov ntaub ntawv.

Nyob rau hauv cov ntaub ntawv ntawm ib tug neeg sab nraud cais nkag tag nrho cov ntaub ntawv kaw tseg neeg siv daim ntawv thov nyob rau hauv tib txoj kev raws li nyob rau hauv lub lag luam nrog ib tug hluas zajlus kom disk, tab sis tsis zoo li lub caij nyoog kawg no qhov teeb meem no, thaum koj nyeem lag luam twb yuav ua nyob rau ntawm txawv (cais) disks.

Thaum no tus taw tes nyob rau hauv lub sij hawm muaj ntau ntau txuj kev ntawm Workers (ntau ntau) ntawm ib tug system xws li RAID-array. Lawv muaj numbered los 0 6, thiab xa mus rau, ntsig txog, RAID 0, RAID 1, thiab hais txog. Nyob rau hauv kev xyaum, cov feem ntau siv xws theem: 0, 1, 3, thiab 5.

Yog li ntawd, nyob rau hauv thiaj li yuav xyaum siv cov sab nraud RAID-array, koj yuav tsum muaj ob yam: RAID-xws li, ua lub zog ntawm muab faib rau cov khoom ntaub ntawv, kev sib txuas lus nrog tus tswv neeg rau zaub mov, generating redundant cov ntaub ntawv, thiab tej array ntawm hard drives. Qhov no yog hu ua ib tug kho vajtse kev xaiv kom tsim tau ib tug RAID-array. Tab sis qhov no yog tsis yog tib txoj kev ntawm Workers disks. Siv cov kev faib ntawm xws li ib tug system yog tau vim tias ntawm lub thiaj li hu ua software ib puag ncig. Nyob rau hauv no embodiment, lub RAID yog nqa tawm siv tshwj xeeb cov cuab yeej uas yog txaus siab los ntawm ib tug los yog lwm operating system. Lub disadvantage ntawm xws li ib siv yog tias Failover software PC yog poob, tag nrho cov ntaub ntawv khaws tseg rau cov zajlus kom RAID-disks. Nyob rau hauv tas li ntawd, peb yuav tsum nco ntsoov hais tias software koj yuav ua ib lub array ntawm tsuas yog tus thawj thiab tus pes tsawg theem.