Kev txheeb xyuas ntawm SCSI thiab SATA Xaiv

Cov thawj coj feem ntau yuav tsum muaj ntsej muag xaiv cov kev xaiv kom siv cov cuab yeej tshiab, muaj kev zoo siab dua los sis xaiv siv technology uas twb muaj pov thawj lawm. Rau peb cov khoom siv hluav taws xob, cov kev xaiv ob qho no yog siv seb puas yuav siv lub SATA tshiab tsav los yog ib qho SCSI uas twb muaj lawm.

Nqe yam thiab qee yam tshiab nta ua Serial ATA, uas yog qhov peb hu SATA technology zoo nkauj heev. Tab sis nws zoo nkaus li rau kuv tias kev siv cov SCSI tshuab tseem yog ib tus qauv zoo rau cov neeg rau zaub mov, kuv yuav qhia rau koj vim li cas hauv tsab xov xwm no.

SATA technology yog ib qho qauv kho tshiab ntawm tus qauv ATA / IDE, uas tau siv ntau xyoo los ua ib qho qauv rau cov duab nyuaj thiab cov twj siv tau xws li CD / DVD drives. Piv rau SCSI drives, ATA drives ib txwm muaj tus nqi qis thiab yooj yim ntawm kev siv, tom qab kev kawm hauv SCSI drives. Thaum SATA technology tau ua kom qhov kev sib txawv ntawm qhov sib txawv raws li lub hom phiaj, thiab muab ntau cov qauv nta, nws tuaj yeem hais tau, SATA technology hauv kev ua tau nqis tes ua qhov loj.

SATA cables STC technology zoo

SATA yog pheej yig tshaj li SCSI. Seb nws yog tus tsav lossis cov khoom kho nws tus kheej (xws li cov kev sib tw thiab cov ntawv xov xwm), yog pheej yig tshaj li SCSI. Yog hais tias koj yuav tsum xav txog qhov nyiaj txiag xav tau los tsim kom tau ib tug neeg rau zaub mov, ces qhov no yog qhov chaw zoo nkauj heev. Feem ntau, tsim kom muaj cov khoom lag luam ntawm SATA pheej yig dua pheej yig tshaj li lub tuam txhab SCSI ntawm tib lub peev xwm. Piv txwv, 36-GB, 10,000-rpm enterprise-class SCSI tsav nqi $ 175, thiab tib tus nqi yuav tau muas nrog ib peev xwm ntawm 200 GB, 7,200 RPM SATA drives ib feeb.

SATA qhia txog kev khiav ceev rau SCSI. Nyob rau hauv txoj kev xav tau, SATA-raws li cov khoom pheej yig ntawm kev pheej yig tuaj yeem ncav cuag li 90 feem pua mus rau 95 feem pua sai dua SCSI-raws cov arrays. Thiab ib qho SATA tsav tsheb yuav luag muaj peev xwm ua kom tiav cov txheej txheem no.

Los ntawm qhov pom ntawm lub cev, SATA kev tswj yooj yim dua. SATA drives siv cov ntaub ntawv thiab lub zog txuas uas sib dua thiab yooj yim dua kev tswj dua cov siv los ntawm SCSI drives. SATA data cable yuav tsum ntev yog feem ntau tsis tshaj ib lub 'meter', qhov no yuav tsis ua rau teeb meem kis teeb meem, thiab cov kab xo thim tuaj yeem coj tau ntau dua cov cua mus rau qhov chaw cuab yeej.

Siv cov kev pab cuam ntawm SCSI drives

Hais tias qhov zoo ntawm ntau lub tshuab SATA, peb saib nws cov kev tsis txaus siab, nws yog cov kev tsis txaus siab coj mus rau cov kev txwv ntawm daim ntawv thov tshuab no.

SATA drives tseem tsis tau mus txog qib ntawm enterprise-class SCSI drives. Lub hwj chim siab tau hais tias lub tuam txhab SCSI cov nqi them taus yog tus SATA drives tsis muaj peev xwm them taus. Kuj muaj qee qhov sib nraus hauv SATA drives thiab cov lag luam-chav SCSI drives, xws li cov ntaub ntawv faib, cov neeg kho tshuab uas tsis raug, thiab cov ua yuam kev. Feem ntau, SATA drives yog suav tias yog cov tsav tsheb, thiab cov khw tsis tuaj yeem lav tias cov neeg tsav tsheb no yuav ua haujlwm ntau tshaj ob lossis peb lub xyoos ntawm kev siv theem siab.

SATA hais kom ua theem tsis yog enterprise-chav kawm. SCSI siv cov txheej txheem hu ua "command queue" los kho kom zoo ntawm cov ntaub ntawv khaws cia, uas tso cai rau tus maub los ua kom muaj cov lus qhia hauv cov tsav raws li qhov tau hais kom zoo. Rau ib tug neeg rau zaub mov, tib lub sij hawm yuav muaj ntau ntau cov neeg sib txawv los ua ib daim ntawv thov, yog hais tias lub disk drive tsis muaj zoo li no muaj peev xwm tswj tau ntau ntau qhov kev xav tau siv tshuab, ces lub disk tsav yuav dhau los ua ib lub hnab ntim hauv qhov kev ua tau zoo, ua rau hauv Qhov kev kawm ua kom tsis muaj teeb meem. Thiab SATA drives ua tsis zoo dua nyob rau hauv cov cheeb tsam no SCSI drives.

SATA technology relies on CPUs tswj cov ntaub ntawv hloov tsheb thaum SCSI drives tsis. SATA technology rau ATA / IDE cov cuab yeej siv los ntawm CPU qhov kev vam khom los ntawm tag nrho cov cia, nws siv CPU los tswj cov ntaub ntawv xa xov, qhov no yuav ua rau kom tus CPU nyob tus nqi. Lub SCSI maub los cuam tshuam rau tus maub los ua khoom kho vajtse kom tswj cov ntaub ntawv xa xov, uas txhais tau hais tias SCSI cov chaw ua haujlwm muaj peev xwm ua tau sai dua thiab cov ntaub ntawv ntau dua. Txawm hais tias SATA cov tshuab siv los ua kom coj tus CPU qhov chaw nyob thiab tus kabmob ATA / IDE piv rau ntau ntau, tabsis cov CPU nyob rau hauv thiab cov npav ua haujlwm yuav siv tau los ua lwm yam, yog vim licas?

SATA drives yuav tsum tau muaj fais fab tuag kev twb kev txuas. Feem ntau, qhov no yog ib qho tseem ceeb me me, tiam sis tseem ceeb tshaj uas yuav tsum tau muab coj los rau hauv tus account thaum xam xyuas cov nyiaj. SATA drives tsis ua hauj lwm kom zoo yam tsis muaj kev sib tsoo hluav taws xob txuas kev ntaus ntawv. Thaum muaj kev sib txuas siab SATA fais fab kev txuas yuav tsum muaj qhov system hluav taws xob cov nqi thiab tus nqi siv lub hwj huam hloov hluav taws xob yuav luag yog $ 10 ib qhov tsav.

Tsis tas li, qhov tsim nyog rau kev siv SATA technology yog cov yooj yim, ib leeg-nyuab zog servers thiab cov computers hauv computer, lossis qee qhov yuav tsum tau muab kev ua haujlwm siab ceev ntawm cov chaw ua haujlwm (xws li chaw luam tawm multimedia). Txawm hais tias tus nqi ntawm SATA yog txaus nyiam heev, tab sis peb yuav zoo dua tsis siv nws nyob rau hauv lub lag luam-chav kawm ntawv neeg rau zaub mov. Siv qee yam nyiaj ntawm SCSI ntaus ntawv, tas cov khoom ua tau yooj yim. SATA drives yuav yog ib qho tseem ceeb qhia rau cov ntawv SCSI tsis tshua muaj pes tsawg (xws li cov computers uas siv SCSI drives), uas yuav tsum maj mam hloov lub xub ntiag ntawm ATA / IDE thiab tau txais ntau hom kev siv hauv cheeb tsam no.