Uye munoziva kuti bvuta-kuko?

Rakavimbika date okuchengetera - chimwe chezvinhu zvinokosha uye kukamura uchishandisa nyaya pakombiyuta enyika. Saka, zvakawanda nesimba uye tsvakurudzo kwave dzirambe mirayiridzo iyi, uye somugumisiro paiva mabikirwo kuvakwa kuti bvuta-arrays, iyo, pasinei kuti yagadzirwa makore mashoma apfuura rinoshanda zvikuru uye kudiwa pane imwe nguva.

Ngatiedzei kufunga rudzii zvigadzirwa. Chokutanga, ngationei havatsananguri chikuru izwi. Saka, bvuta-hondo - zviri mhando wandisa akagadzirwa akazvimirira disks kuti anoshandiswa dzikurukure nepo uye kubudirira makombiyuta. Chokutanga kunoitwa nemhaka redundancy, uye wechipiri - nokuda mawa nokushanda Zvifambiso, izvo zvakasikwa zviri mumitsetse. Zvinofanira kucherechedzwa kuti bvuta-mumitsetse gadziriro rinoshandiswa senzira chete dhisiki kubudikidza kukurukurirana pamusoro-software uye Hardware.

Kuti tipindure mubvunzo sei kuti pave kuzopamba-siyana, zvinofanira kutaurwa kuti pane dzakasiyana zvakasiyana (yomuropa), iro Implementation iyo kunoenderana kurongwa discs. Zvinonyatsorehwa kushanda Zvifambiso dzinogona kurongwa pamwe kana zvakafanana kana akazvimirira kuwana. Muchiitiko chokutanga, mashoko kunyora dhisiki nzvimbo rakakamurwa rinoparadza (anokwana zviyero), iyo zvino kuwira pamusoro zvakasiyana mumuviri disks (waivako dzinowedzerwa mawa kurekodha rinoparadza). Kana uchiverenga mashoko sezvo akavhiyiwa zvose zvinogumbura, izvo zvinoita kuti mamwe kuwedzera kunyatsoshanda yakadaro hurongwa. Uyezve, vazhinji Zvifambiso, chokupika achava bvuta-kuko. Asi pane nuances. Hazvibviri kuronga hurongwa yakadaro, kana chinogumbura saizi iri yakakura kupfuura kukura nyora chikumbiro ruzivo.

Kana yakazvimirira yoga kuwana mashoko ose akanyorwa User Chikumbiro sezvinoitwa mukushanda pamwe chete inonzwisisika dhisiki, asi kusiyana yokupedzisira mamiriro, kana uchiverenga oparesheni kare kuitwa panguva dzakasiyana (yoga) disks.

Panguva iyi nguva pane dzakawanda mwero nzira kuronga (siyana) kwegadziriro akadai bvuta-kuko. Vari inoverengwa kubva 0 kusvika 6, uye aitaura ukuwo, bvuta 0, bvuta 1, uye zvichingodaro. In tsika, kuti zvinowanzoshandiswa nhanho dzakadaro: 0, 1, 3, uye 5.

Saka, kuti kushanda kushandisa kwokunze bvuta-siyana, unofanira kuva zvinoriumba maviri: bvuta-controller, anoita mabasa ose kuparadzirwa kuuya mashoko, kutaura tenzi Server, generating wandisa data, uye chero siyana dzakaoma Zvifambiso. Izvi zvinozivikanwa somunhu Hardware pfungwa kuumba kuzopamba-kuko. Asi ichi hachisi chete nzira kuronga disks. Kuvaka chakadaro hurongwa zvinokwanisika nokuda anonzi Software ezvinhu. In musimboti ichi, kuti bvuta rinoitwa kushandisa anokosha zvishandiso vanotsigirwa mumwe kana mumwe uchishandisa hurongwa. Zvakaipira kuva Implementation kwakadaro ndechokuti failover Software PC wakarasika, mashoko ose zvakachengetwa pamusoro musoro bvuta-disks. Uyezve, tinofanira kuyeuka kuti Software unogona kuvaka inofa chete wokutanga razero chechetere.