Tus neeg rau zaub mov hard disk interface pom cov qauv kev ua thiab kev xaib ntawm qhov khoom rau ib qhov twg. Koj puas paub dab tsi hom neeg rau zaub mov hard disk interfaces yog muaj? Tus neeg rau zaub mov hard disk interface muaj plaub hom: SATA interface, SCSI interface, SAS interface, thiab fiber ntau interface.
Ua ntej, qhov scenery tseem SATA interface
SATA interface kuj yog hu ua "serial interface", yog li cov hard disk nrog SATA interface tam sim no hu ua serial hard disk. Nws yog ib qho evolution tom qab IDE nyuaj tsav. Kev tsim lub cev ntawm SATA yog nyob ntawm Fiber Channel, yog li siv cov lus qhia plaub lub ntsiab lus. Nws muaj peb lub ntsiab ntawm SATA interfaces rau hnub tim. Ntawm lawv, SATA-2 specification yog nquag siv, thiab kev kis ceev tau mus txog 3GB / sec. Raws li hauv daim duab 1, SATA-2 interface specifications txais yuav los ntawm ib hom tshuaj SSDs.
Tam sim no muaj ib tug SATA-3 interface, raws li qhia hauv daim duab yog SATA-3 interface neeg rau zaub mov hard disk rau Western Digital. Ntxiv rau qhov nce tus nqi hloov mus rau 6GB / sec, lub SATA-3 interface muab kev nyeem ntawv optimization rau ntau hom ntaub ntawv. Cov neeg siv, qhov tshwm sim ntawm SATA-3 interface tsis txhais hais tias cov khoom uas twb muaj lawm SATA-2 yuav raug muab tshem tawm, vim SATA-3 tau tshaj qhov qub SATA kiag li txawm tias tus qauv tshiab INCITS ATA8-ACS.
Vim lub SATA interface neeg rau zaub mov hard disk, lub tshuab yog heev paub tab thiab kev tsim kho yog tsis siab, yog li ntawd tus nqi kev lag luam kuj tseem ceeb dua rau lwm cov hom khoom siv. Nws ntseeg hais tias rau cov neeg siv nyiaj nrog cov neeg siv nyiaj uas tsis tshuav nyiaj siv, kho kom zoo dua SATA-2 interface hard disk nrog tib lub interface, tiam sis muaj peev xwm loj dua nyob hauv cov thawj tus neeg rau zaub mov architecture yog qhov kev xaiv zoo tshaj plaws.
Thib ob, daim ntawv thov SCSI ntau dua
Tus neeg zov me nyuam hard disk ntawm SCSI interface yog ib hom kev siv tam sim no. Nws muaj cov cwj pwm ntawm cov ntaub ntawv loj thiab dhau kev ua haujlwm CPU. Lub SCSI maub los txuas lub SCSI interface hard disk muaj tus tswj kev sib npaug rau CPU kev ua haujlwm. Nws tuaj yeem hloov tau feem ntau ntawm CPU ua; niaj hnub, Ultra 320 txheem SCSI interface hard disk siv dav, thiab cov ntaub ntawv kis tau tus mob siab txog 320MB / sec. SCSI interface neeg rau zaub mov hard disk thiab SCSI maub los yog pom hauv daim duab.
Tsis tas li ntawd, SCA2 interface ntawm SCSI hard disk uas txhawb cov kub plugging tshuab kuj yog zoo heev rau kev xa mus rau cov haujlwm ua hauj lwm tam sim no thiab cov kev pabcuam hauv haujlwm. SCSI nyuaj disks yuav tsum tau siv los ntawm SCSI interface. Tam sim no tus neeg zov me nyuam motherboards feem ntau muaj kev sib tshuam SCSI interfaces. Koj tseem tuaj yeem nruab ib daim npav SCSI daim npav rau kev sib txuas mus txuas ntxiv SCSI li, yog li cov kabmob tsim muaj peev xwm tsim muaj qis zog.
Yog li, zoo li cas ntawm cov neeg rau zaub mov hard disk yog SCSI interface, uas zoo dua li qhov muaj feem xyuam rau qhov chaw ua haujlwm? Ua ntej, SCSI muaj kev pabcuam zoo rau redundant array of disks (RAID), uas tuaj yeem ntsib cov chaw ua haujlwm nrog cov ntaub ntawv khaws tseg. Kev ruaj ntseg cov ntaub ntawv kuj tau guaranteed; nyob rau hauv tas li ntawd, lub ceev ntawm SCSI nyuaj drives twb tau txog 15,000 rpm, uas saib xyuas kev ua haujlwm ntawm cov ntaub ntawv ntawm cov tuam txhab yog guaranteed; dua, nws cov kev siv CPU tsis tshua muaj thiab kev ua haujlwm ua haujlwm sib txuam ua haujlwm yuav loj tuaj. Lub chaw ua haujlwm muaj kev lag luam zoo thiab kev txhawb nqa. Thaum kawg, los ntawm cov kev lag luam tam sim no tus nqi sib piv hauv daim duab 6, SCSI interface hard disk qis dua SAS interface hard disk raws li ib tug lej, tab sis significantly siab tshaj SATA interface hard disk, yog li nws tsim kom muaj kev sib haum xeeb nrog qee qhov kev tiv thaiv rau cov ntaub ntawv cia. Chaw ua haujlwm nrog kev thov, kev xav tau, thiab kev ua haujlwm siab ua haujlwm.
Thib peb, tus caum qab ntawm kev ua tau zoo tshaj plaws SAS interface
"SAS" txhais tau hais tias serial txuas SCSI. Kev nkag siab yooj yooj yim yog qhov hloov ntawm SCSI interface tshuab. Lub hom phiaj yog los ntxiv txhim kho qhov kev ua tau zoo, muaj thiab scalability ntawm SCSI technology. Nws cov xeeb ceem yog tias nws tuaj yeem txuas ntau disk ntim tib lub sij hawm thiab txuag hauv qhov chaw ntawm neeg rau zaub mov; Piv txwv li, SAS interface txo txoj kev siv me me thiab sib phim nrog lub thev xov tooj, thiab SAS hard disk muaj 2.5-nti specification, raws li qhia hauv daim duab 7. Nws yog Seagate (Savvio 15K.2) 2.5-nti SAS hard disk interface.
Qhov chaw zoo hneev taw ua qhov nyuaj tsav ntawm no interface dav muaj nyob rau hauv cov hniav txiv qaub. Siv yim 2.5-nti SAS drives nyob rau hauv ib qhov siab 2U los ua tus xaiv ntau OEM neeg rau zaub mov muag khoom. Tsis tas li ntawd, rau cov tuam txhab uas tsis muaj peev xwm them taus los hloov cov kev pabcuam uas tsis tshuav nyiaj nrog, Cov SAS thiab SATA nyuaj disks siv tau los hloov kev sib hloov. Cov rov qab sib tw ntawm SAS interfaces tso cai rau cov neeg siv khoom siv hauv lawv cov ntawv sib txawv. Piv txwv, SATA drives yuav siv tau rau kev khiav lag luam dav dav, thaum SAS drives yuav tsom rau cov kev siv cov ntaub ntawv ntim cov ntaub ntawv tseem ceeb thiab cov ntaub ntawv txaus tseem ceeb heev. Raws li tau pom hauv daim duab, ST-1042SAS-D7 hard disk extraction box qhia los ntawm S100 Information Technology (SNT) yog lub zoo meej hybrid los txhawb lub coexistence ntawm SAS thiab SATA nyuaj disks, thiab yuav siv nrog SAS los yog SATA hard disk tswj phaib los txhawb RAID 0, 1. 5 disk array hom.
Piv rau tib lub peev xwm Ultra 320 SCSI nyuaj tsav, SAS drives yog kim dua, vim lawv zoo dua scalability, compatibility thiab ntau txhim khu kev txhaum txhaum cai. Los ntawm cov khoom lag luam ntawm tus neeg siv khoom ua lag luam, tus neeg ua lag luam tseem ceeb nyob hauv tsev thiab txawv teb chaws twb tau pib siv cov qauv siv SAS nyuaj, tab sis daim ntawv thov thiab kev ua lag luam ntawm cov khoom muaj sib txawv. Piv txwv, lub HP ProLiant DL380 G5 tsom rau ntawm daim ntawv thov kev koom tes, IBM System x3650 M2 rau streaming cov kev pab cuam thiab e-lag luam, txhua yam kev txhawb rau SAS drives.
Qeb plaub, daim ntawv thov high-end fiber optic interface
Fiber Channel (FC) yog ib qho qauv tsim los txhim kho cov kev ceev thiab yooj yim ntawm ntau lub tshuab kaw ntaiv, uas tuaj yeem txhim kho txoj kev sib txuas lus ntawm cov lej tshuab nyuaj. Rau lub nruab ERP loj loj, lossis hauv online real-time trading systems uas yuav tsum tau siv ntau dua kev nkag mus los thiab cov lus teb tuaj ceev, cov neeg tsav tsheb tsis tshua muaj kev sib tw ntawm qhov no yog qhov kev xaiv zoo tshaj plaws; ntawm chav kawm, tus nqi ntawm lawv cov khoom yog lawm dua. Hauv thawj ob peb.
Los mus, cov neeg rau zaub mov nyuaj disks ntawm kev sib txawv technology yees kuj txiav txim xyuas lawv cov kev cai zoo dua. Separate SATA hard disk server khoom yog tsawg hnub no, feem ntau nyob rau hauv ntauwd servers rau cov kev nkag teb chaws nkag. SCSI thiab SAS muaj kev ua tau zoo tshaj qhov SATA interface hard disk vim lawv cov kev siv CPU tsawg thiab ntau yam khoom siv. Yog li ntawd, lawv tuaj yeem muab faib rau hauv cov chaw zov me nyuam cov ntaub ntawv thiab kev ruaj ntseg servers. Tam sim no, nws zoo nkaus li feem ntau ntawm cov neeg rau zaub mov nyuaj disks los yog neeg rau zaub mov khoom ntawm lub khw yog ob hom: Ultra320 SCSI thiab SAS / SATA.
Nws yog undeniable hais tias nyob rau hauv 2009, SAS tau ua lub ntsiab mainstream hard disk platform nyob rau hauv lub lag luam server. Nyob rau yav tom ntej, cov neeg siv kev lag luam nrog cov neeg ua hauj lwm hard disk hloov dua siab tshiab tseem xav tau ntau dua los xaiv SAS platform, tab sis tus nqi yog obviously siab tshaj ib qho, tab sis coj qhov tseeb daim ntawv thov cov nyhuv yog qhov zoo dua.