Raid Array - zokusombulula iingxaki efundiweyo / isantya bhala nokuthembeka inkqubo

Raid uluhlu - i drives eziliqela macala ezizimeleyo, apho amaqhina oqhagamshelwano phakathi yi imijelo ukusebenza kwi kwisantya sezingeni eliphezulu. Le nkqubo uthatha le umbutho lunye uluhlu disk. Ukulawula ukwabiwa ukufunda nokubhala inkqubo kwenziwa yi esisebenza.

Raid uluhlu isetyenziswa ukuze ukwandisa isantya ukurekhoda okanye nokuthembeka yokugcina disk. Ngesisombululo le miba ngcono ukusebenza ngokuncomeka kwesixokelelwano lonke.

Ekuqaleni, ukudalwa RAID-uluhlu ibandakanya kwiqela of disks ezingenziwa. Eli phulo kubonakala ngokucacileyo isihloko (kwesifinyezo kuthetha oku kulandelayo: "Yakhani uluhlu ezingasebenziyo of disks ezingenziwa"). Kodwa ke, le iteknoloji waba esemgangathweni elithembekileyo, siguqulwe. Modern kuhlasela uluhlu idaliwe, njengoko umthetho, ngenxa yokuba izixhobo ngokwanelisayo ezibizayo. Oku, kwakhona ibonakala isihloko (ngoku imela "Yakhani uluhlu ezingasebenziyo of disks Independent").

Uphuhliso woluntu yolwazi baphenjelelwa ngamandla yi ezazifuneka zibekwa phambili yentsimbi, kuquka iivenkile data. Ngoko ke, logama nje wadalwa kuhlasela-uluhlu, kuye kwaba podtehnology eziliqela ezahlukeneyo, nto leyo zaye zaphuhliswa ukuze ukujongana imisebenzi ethile compartmentalized.

Zonke iintlobo ngeentlobo iingxaki zisonjululwe ziikhompyutha ufuna ezahlukeneyo kangangoko izisombululo zobuchwepheshe. ma Types eS:

• RAID-0. Ekuphunyezweni elula ifuna drives ezimbini. Ulwazi ezayo ukurekhodwa unit amathuba kuzo zombini drives. Ukufunda kubandakanya inqubo. Oku ikhawulezisa kakhulu phezulu kwirekhodi, kodwa ayiboneleli ukuthembeka ezaneleyo, kuba kukhona impazamo enye disc kukhokelela ukulahleka data lonke uluhlu.
• RAID-1. Ekuphunyezweni elula ifuna drives ezimbini. Ingcaciso enikwe kwi diski ebhalwe kuzo ngokupheleleyo. Oku ehla inkqubo yokurekhoda, kodwa ngenxa yokuphela komsebenzi ingundoqo inikeza inqanaba eliphezulu lokuthembeka. Inzuzo ephambili yale uphuhliso - ukufumaneka ephakamileyo ukufunda ngokukhawuleza (kuba kunokwenzeka ukuba ukufunda drives ezimbini ngaxeshanye).
• RAID-5. A uluhlu nandzu-wokunyamezela. Ekuphunyezweni kwecacileyo, kufuneka ube kwi- ezintathu. Naluphi na ushicilelo ulwazi kwenzeka siwuxabhele umsinga data phakathi zaziibloko, nganye yabelwa i-checksum. Xa kuthe ilahleko data kwesinye Recordable diski, unako ukubuyisela usebenzisa checksums ezibhalwe kwezinye. IXesha ekuPhulukenwe nalo kufuna ulwabiwo obunamandla, ngoko inkoliso yale ukuphunyezwa lisetyenziswa kwi server zekhompyutha.

Raid uluhlu ukuqaphela eyesihlanu ezivame kakhulu. Oku kungenxa yokuba inokuthenjwa kunye ngesantya esiphezulu processing of lolwazi, ekubeni uluhlu linye kwenziwa ngaxeshanye iinkqubo eziliqela ezizimeleyo ukurekhoda kwaye ukufunda ulwazi.