Njengamanje, amaswishi amaningi emakethe, ikakhulukazi amaswishi amadala, asebenzisa ugesi owodwa kuphela. Uma ukunikezwa kwamandla kwehluleka (njengokuhluleka kwamandla), iswishi ayikwazi ukusebenza ngendlela evamile, noma ikhubaze inethiwekhi.Izinto zamandla ezingadingekile ziyisixazululo esikahle sale nkinga. Amaswishi aklanywe ngezinto ezisetshenziswa amandla angasasebenzi angathuthukisa kakhulu ukuzinza kwenethiwekhi futhi aqinisekise ukusebenza okungaphazamiseki kwemishini. Ngakho-ke, yini ukunikezwa kwamandla okungasenamsebenzi futhi kungani iswishi kufanele isebenzise idizayini yokuphakela amandla engasasebenzi?

Kuyini ukuphakelwa kukagesi okungasasebenzi?

Ukunikezwa kwamandla okungafuneki kubhekisela ekwakhiweni kwedivayisi eyodwa yenethiwekhi esebenzisa amandla aphathekayo amabili noma ngaphezulu, futhi ukunikezwa kwamandla ngakunye kunganika amandla idivayisi ngokuzimela. Ngalesi sikhathi, noma ngabe ukunikezwa kwamandla kwehluleka, ezinye izinto zikagesi zizothwala ngokushesha umthwalo wokunikezwa kwamandla wemishini ukuze kuqinisekiswe ukusebenza okuvamile kwemishini. Amaseva noma ama-disk array ngokuvamile asebenzisa idizayini yokunikeza amandla engasanele, engagwema ngempumelelo ukuphela kukagesi noma okunye ukwehluleka (okufana nesikhathi sokuphumula) kwezisetshenziswa. Manje, idizayini yokuphakelwa kwamandla engasebenzi iya ngokuya ithandwa kakhulu ekushintsheni kwenethiwekhi nakwezinye izisetshenziswa ngenxa yezinzuzo zayo eziyingqayizivele.

Ukubuka konke kokunikezwa kwamandla kagesi angasebenzi

Ukuncipha kokunikezwa kwamandla ngokuvamile kusebenzisa izindlela zokuphakelwa kukagesi njengokungadingeki ngokuphelele kanye nokungadingeki ngokwengxenye. Ukuphinda kuphindwe kabusha (okubuye kubizwe ngokuthi 1+1 redundancy) kusho ukuthi iswishi ifakwe amamojula wamandla amabili. Uma imojuli eyodwa yamandla ihluleka, enye imojuli yamandla ingaqhubeka nokunikeza amandla ngokujwayelekile ngaphandle kokuphazamisa ukusebenza kwenethiwekhi. Ukwehliswa kancane kancane (ukuphelelwa umsebenzi okungu-1+N) kusho ukuthi “ugesi ongeziwe ongu-1” unikeza amandla kumaswishi “N”. Sicela uqaphele ukuthi okubi kokunikezwa kwamandla angasebenzi endawo ukuthi kunesikhawu sesikhathi sokushintshwa kwamandla, okungukuthi, isipele samandla samandla sidinga ukunikeza amandla kudivayisi ngemva kwesikhathi esithile, okungase kubangele ukuphazamiseka kwenethiwekhi. Umdwebo 1 ubonisa izindlela zokusebenza ezihlukene zokuphinda uthole umsebenzi ogcwele kanye nokuphinda ingxenye ethile.

Ngokuvamile, ukunikezwa kwamandla okumbaxambili ekushintsheni kwenethiwekhi kusebenzisa idizayini yokuphakela amandla engasasebenzi ngokuphelele. Sicela uqaphele ukuthi ngaphansi kwezimo ezijwayelekile, kokubili ukunikezwa kwamandla kuzosebenza futhi kusebenze ngesikhathi esisodwa. Kodwa-ke, ngenxa yabakhiqizi bemishini abahlukene, ukunikezwa kwamandla okusekelayo kwamanye amaswishi angasasebenzi ngokugcwele ahlinzekwa abakhiqizi nakho kungase kungenzi lutho.