Raid Array - ukuxazulula izinkinga wokufundwayo / bhala nesivinini kohlelo

Raid afanayo - kuyinto ngemoto eziningana Okusizayo ezimele, okuyinto oxhumene by iziteshi ezisebenza ngesivinini sezingeni eliphezulu. Uhlelo uthatha lokhu kuhambisana ngokuqhubekayo njengenkathi eyodwa disk afanayo. Ukuphatha ukusatshalaliswa ukufunda nokubhala inqubo kwenziwa isilawuli.

Raid afanayo isetshenziswa ukuze wandise isivinini ukurekhoda noma ukuthembeka isitoreji kwidiski. Isixazululo lezi zimpikiswano abakwazi ukwenza ngcono ukusebenza kahle jikelele lonke uhlelo.

Ekuqaleni, ukudalwa raid-afanayo kuhilela Ukuqoqela ndawonye ka amadiski Akubizi. Leligxathu kubonakala ngokucacile kule isihloko (segama kusho lokhu okulandelayo: "Array Redundant of amadiski Akubizi"). Kodwa-ke, lobu buchwepheshe wazibonakalisa izinga nokunokwethenjelwa, zishintshe. Modern kugasela afanayo idaliwe, njengoba umthetho, ngesisekelo imishini sasivumela ezibizayo. Lokhu, yona, futhi kubonakala esihlokweni (manje imelela "Array Redundant of amadiski Independent").

Ukuthuthukiswa nemphakatsi welwati kakhulu ukuthonywa nezimfuneko phambili ihadiwe, kufaka phakathi idatha izitolo. Ngakho-ke, uma nje amaphoyisa eseqedile ukusesha-afanayo yadalwa, sekube podtehnology eziningana ezahlukene, okuyinto zakhiwa ukubhekana imisebenzi ethize compartmentalized.

Zonke izinkinga ezihlukahlukene ixazululwe by amakhompyutha kudinga ezihlukahlukene kakhulu ubuchwepheshe izixazululo. Izinhlobo kugasela afanayo:

• Raid-0. Ekusebentiseni elula kudinga oshayelayo emibili. Info uyeza ukuqoshwa iyunithi sivuleka kokubili ngemoto. Ukufundela ingane indaba kuhilela inqubo reverse. Lokhu kakhulu isheshisa yerekhodi, kodwa alinikezi nokwethenjelwa eyanele, ngoba kuvele omunye akwazi ukugcina kuholela ukulahleka kwedatha e lonke afanayo.
• Raid-1. Ekusebentiseni elula kudinga oshayelayo emibili. Ulwazi olunikiwe phezu akwazi ukugcina eqoshiwe kubo ngokugcwele. Lokhu kubambezela inqubo yokuqopha, kodwa ngenxa komsebenzi ngokuphelele inikeza ezingeni eliphezulu ngokuthembeka. Inzuzo enkulu yaleli ukuthuthukiswa - ukutholakala eliphezulu futhi wokufundwayo okusheshayo (ngoba kungenzeka ukuthi lifunde kusukela oshayelayo emibili ngesikhathi esisodwa).
• Raid-5. Ichaza iphutha-ukubekezela. Ekusebentiseni elula, kumele ube amadiski ezintathu. Noma yikuphi ukuqoshwa ulwazi kwenzeka ngokuphula ekusakazeni idatha ku amabhlogo, ngalinye elikwazi inikezwe i-checksum. Esimeni ukulahleka kwedatha omunye akwazi ukugcina, ungakwazi ukubabuyisela usebenzisa checksums ezilotshwe nezinye. Yokutakula kudinga ukwabiwa obunamandla, ngakho iningi lokhu kusebenza isetshenziswa ku iseva hardware.

Raid afanayo ukugcwaliseka yesihlanu yisona esikhulunywa abantu abaningi. Lokhu kungenxa linokwethenjelwa nesivinini okusezingeni eliphezulu ukucutshungulwa kolwazi, ngoba afanayo olulodwa kungaba kwenziwe kanyekanye izinqubo eziningana ezimele ukuqopha futhi ukufunda ukwaziswa.