Raws li cov computers, tshwj xeeb yog cov laptops, txuas ntxiv kom me, cov khoom xws li cov chaw cia khoom tseem ceeb yuav tsum tau txais kom sib dua me me. Nrog cov txheej txheem ntawm lub xeev-drives , nws ua ib lub ntsis yooj yim rau lawv tso rau hauv puas thinner designs li Ultrabooks , tiam sis qhov teeb meem ces yog siv ntxiv rau kev lag luam tus qauv SATA interface. Nws thiaj li, lub mSATA interface tau tsim los tsim ib daim ntawv thin profile uas tseem tuaj yeem siv nrog SATA interface. Qhov teeb meem tam sim no yog hais tias SATA 3.0 cov qauv yog txo cov kev kawm ntawm SSDs. Yuav kom kho cov teeb meem no, ib daim ntawv tshiab ntawm compact card interface xav tau los tsim. Ameslikas hu ua NGFF (Next Generation Form Factor), tus tshiab interface tau thaum kawg yuav ua rau tus tshiab M.2 tsav interface hauv SATA version 3.2 specifications.
Kev Ceev Txij
Thaum me me, qhov tseeb, qhov zoo tshaj hauv kev tsim cov tshiab interface, qhov kev ceev ntawm cov ntsiab lus yog qhov tseem ceeb. Lub SATA 3.0 specifications txwv tiag tiag hauv lub ntiaj teb bandwidth ntawm tus SSD ntawm tus tsav lub tsheb mus ncig ntawm 600MB / s, ib yam dab tsi uas muaj ntau tsav tau tam sim no. Lub SATA 3.2 specifications nkag tau ib qho tshiab mus kom ze rau lub M.2 interface zoo li nws tau ua nrog SATA Express . Hauv ib qho tseem ceeb, M.2 daim npav tshiab siv tau tus SATA 3.0 specification uas twb muaj lawm thiab txwv tsis pub dhau 600MB / s lossis nws yuav siv tau PCI-Express uas muab ib qho bandwidth ntawm 1GB / s raws li hauv PCI Express tam sim no 3.0 cov qauv kawm. Tam sim no hais tias 1GB / s ceev yog rau ib txoj kab PCI nkaus xwb. Nws tau siv ntau txoj kab khiav qis thiab hauv M.2 SSD specification, mus txog plaub txoj kab khiav haujlwm. Siv ob txoj kab khiav qis yuav muab 2.0GB / s thaum plaub txoj kab khiav tawm mus txog 4.0GB / s. Nrog qhov kev tso tawm ntawm PCI-Express 4.0, cov kev ceev no yuav tsum yog ob npaug.
Tam sim no tsis yog txhua lub tshuab yuav tsum ua kom cuag cov kev nce no. Lub M.2 drive thiab interface hauv lub computer yuav tsum tau teem rau tib hom. Lub M.2 interface yog tsim los siv ob qho tib si Legacy SATA hom tshiab los yog hom tshiab PCI-nthuav qhia tab sis tus tsav yuav xaiv qhov uas yuav siv. Piv txwv li, ib qho M.2 tsav uas tsim los nrog SATA Legacy hom yuav tsum tau txwv rau qhov hais tias 600MB / s ceev. Tam sim no, M.2 tsav tau tshaj PCI-Qhia txog 4 kab (x4) tab sis lub computer tsuas siv ob txoj kab (x 2). Qhov no yuav ua rau siab tshaj plaws ntawm cov 2.0GB / s xwb. Yog li yuav tau ceev tshaj plaws, koj yuav tsum xyuas seb ob lub tsav tsheb thiab lub computer los yog kev txhawb nqa niam txiv.
Tsawg Me Thiab Ntau Lawm
Ib qho ntawm cov hom phiaj ntawm M.2 tsav tsim tau los txo kom tag nrho qhov loj ntawm qhov cia khoom. Qhov no yog ua tiav ib qho ntawm ntau txoj kev. Ua ntej, lawv tau ua cov ntawv teev lus tshaj li qhov teev mSATA yav dhau los. M.2 cards yog 22mm dav dav rau lub hli 30 ntawm mSATA. Cov ntawv teev lus kuj tseem muaj peev xwm ua luv luv li 30 hli ntev piv rau 50mm ntawm mSATA. Qhov txawv yog tias M.2 phaib kuj txhawb ntev ntev txog li 110mm uas txhais tau hais tias nws yuav ua tau loj dua uas muab chaw rau ntau daim tawv thiab ntau dua li ntawm daim ntawv Tuition Waiver.
Ntxiv rau qhov ntev thiab dav ntawm daim ntawv, muaj kev xaiv rau tib qho los yog ob tog sided M.2 boards. Vim li cas cov ob txawv thicknesses? Zoo, ib leeg ua ke muab kev sib tw thiab yog cov tseem ceeb rau ultrathin laptops. Lub rooj sib koom muaj ob tog, ntawm ob sab, yuav cia ob npaug ntawm ntau daim tawv tuaj yeem ntsia rau ntawm M.2 lub rooj sibtham kom muaj peev txheej ntau dua uas yog siv rau kev siv compact desktop qhov chaw tsis tseem ceeb. Qhov teeb meem yog tias koj yuav tsum paub txog qhov M.2 connector nyob rau hauv lub computer ntxiv rau qhov chaw ntev npaum li cas. Feem ntau cov laptops tsuas yog siv ib qhov sib txuas ntawm ib qho uas txhais tau hais tias lawv tsis tuaj yeem siv ob tog sided M.2 cards.
Hais Hom
Rau ntau tshaj li ib xyoos caum, SATA tau cia rau cov twj siv computer thiab ua si. Qhov no yog tsaug rau qhov yooj yim mus siv interface tab sis kuj vim yog lub AHCI (Advanced Host Controller Interface) hais kom ua qauv. Qhov no yog ib txoj hauv kev uas lub koos pis tawj sib txuas lus nrog cov twj cia khoom. Nws yog tsim rau txhua qhov kev khiav hauj lwm tam sim no lub tshuab thiab yog li tsis tas yuav tsum muaj lwm yam tsav nruab rau hauv qhov system thaum peb ntxiv cov tshiab drives. Nws tau ua hauj lwm zoo tiam sis nws tau tsim nyob rau hauv era ntawm nyuaj drives uas muaj txwv tsis pub muaj peev xwm ua cov lus qhia vim yog lub cev ntawm tus tsav taub hau thiab platters. Ib lo lus txib queue nrog 32 lus txib txaus. Qhov teeb meem yog tias cov khoom hauv lub xeev muaj peev xwm ua tau ntau ntau tab sis raug txwv los ntawm AHCI tsav tsheb.
Los pab tshem tawm cov kev lag luam no thiab txhim kho kev ua tau zoo, NVMe (Non-Volatile Memory Express) cov qauv kev ua haujlwm thiab cov tsav tsheb tau tsim los ua ib qho txhais tau tias yuav tshem tawm qhov teeb meem no rau cov khoom hauv lub xeev. Es tsis siv ib zaug xwb queue queue, nws muab txog li 65,536 command queues nrog cov 65,536 commands ib queue. Qhov no tso cai rau kev ua haujlwm sib luag ntawm kev nyeem ntawv thiab sau cov lus thov uas yuav pab txhawb kev ua tau zoo tshaj qhov AHCI hais kom ua.
Thaum lub sij hawm no zoo heev, muaj me ntsis teeb meem. AHCI ua rau txhua lub caij niaj hnub khiav haujlwm tab sis NVMe tsis yog. Yuav kom tau txais lub peev xwm tshaj tawm ntawm cov tsav tsheb, cov tsav tsheb yuav tsum tau muab tso rau saum cov tshuab khiav lag luam uas twb muaj lawm los siv txoj kev hais kom ua tshiab. Qhov no yog ib qho teeb meem rau ntau tus neeg nyob rau cov laus zog khiav hauj lwm. Ua tsaug rau M.2 tsav specification pub rau ob txoj kev siv. Qhov no ua rau kev sib txuas ntawm tus tshiab interface yooj yim nrog cov computers uas twb muaj lawm thiab cov technologies los ntawm kev siv lub qauv AHCI. Tom qab ntawd, raws li cov kev them nyiaj yug rau NVMe cov qauv hais kom ua tau zoo tuaj rau hauv software, tib lub ntsiab lus siv tau nrog rau qhov kev hais kom ua tshiab no. Tsuas yog ceeb toom tias kev hloov ntawm ob hom kev xav tau hais tias tus tsav yuav rov kho dua.
Khees zog Siv Tau Zoo
Mobile computers tsuas muaj lub sijhawm qhib raws li lawv cov roj teeb loj thiab lub hwjchim kos los ntawm ntau qhov chaw. Khoom hauv lub xeev tau muab qee cov kev txiav tawm hauv kev siv zog ntawm cov khoom cia kom zoo dua tias lawv tau txhim kho cov roj teeb hauv lub neej tiam sis muaj chaw rau kev txhim kho. Txij li cov M.2 SSD interface yog ib feem ntawm SATA 3.2 specifications, nws kuj muaj qee cov nta tshaj li qhov kev sib txuas xwb. Qhov no suav nrog feature tshiab hu ua DevSleep. Raws li ntau thiab ntau lub nruab yog tsim los mus rau hauv hom pw tsaug zog thaum kaw los yog tua es tsis muaj hwj chim kiag li, muaj qhov teeb meem tsis tu ncua ntawm lub roj teeb kom qee cov ntaub ntawv nquag tuaj yeem ceev thaum rov qab kho cov khoom. DevSleep txo cov nyiaj ntawm lub hwj chim siv los ntawm cov khoom siv xws li M.2 SSDs los ntawm kev tsim lub xeev tshiab zog. Qhov no yuav tsum pab ntev lub sij hawm rau cov txheej txheem pw tsaug zog dua li siv nruab nrab ntawm kev siv.
Teeb meem Booting
Lub M.2 interface yog ib qho zoo sib ntxiv rau hauv computer cia thiab muaj peev xwm los txhim kho kev ua tau zoo ntawm peb cov computers. Muaj me ntsis teeb meem nrog rau qhov kev siv thaum ntxov. Kom tau qhov kev kawm zoo tshaj plaws los ntawm tus tshiab interface, lub computer yuav tsum siv lub npav PCI-Express, txwv tsis pub, nws sau tib yam li ib qho uas twb muaj lawm SATA 3.0 tsav. Qhov no tsis zoo li ib qho loj deal, tiam sis nws ua tau yog ib qho teeb meem nrog ntau tus thawj ob peb tus niam ntawv uas siv cov feature. SSD drives muab kev zoo tshaj plaws thaum lawv siv los ua cov hauv paus los yog khau raj tsav. Qhov teeb meem yog tias qhov software uas twb muaj lawm muaj ib qho teeb meem nrog ntau qhov kev tsav tawm ntawm lub npav PCI-Express es tsis yog SATA. Qhov no txhais tau hais tias muaj M.2 tsav siv PCI-Express thaum lub vas nthiv tsis yog thawj tsav qhov twg qhov kev khiav hauj lwm muaj kev khiav haujlwm lossis cov kev pab cuam. Cov txiaj ntsig yog cov ntaub ntawv ceev tab sis tsis yog khau raj.
Tsis yog txhua tus computers thiab operating systems muaj qhov teeb meem no. Piv txwv li, Kua tau tsim OS X los siv PCI-Express tsheb npav rau hauv paus partitions. Qhov no yog vim hais tias Kua switched lawv SSD drives rau PCI-Express nyob rau hauv lub 2013 MacBook Cua ua ntej lub M.2 specifications raug finalized. Microsoft muaj tshiab Windows 10 los txhawb tag nrho cov PCI-Express thiab NVMe drives yog hais tias kho vajtse nws yog khiav ntawm ua tau zoo li. Tsam cov ntawv ntawm qhov rais tej zaum yuav ua tau yog tias qhov khoom txhawb siab thiab cov tsav tsheb sab nraud tau nruab.
Cas Siv M.2 Tshem Tau Lwm Cov Nta
Lwm cheeb tsam ntawm kev txhawj xeeb tshwj xeeb nrog cov desktop motherboards txog li cas lub M.2 interface txuas nrog rau ntawm lawv lub cev. Koj pom tias muaj tsawg tsawg tus PCI-Express khiav nruab nrab ntawm tus processor thiab tus so ntawm lub computer. Yuav kom siv PCI-Express tshaj li M.2 daim npav, lub chaw tsim tshuaj yuav tsum siv cov PCI-Express khiav tawm ntawm lwm qhov chaw ntawm lub tshuab. Yuav ua li cas cov PCI-Express lanes raug faib ntawm cov cuab yeej ntawm cov laug cam yog qhov kev txhawj xeeb loj. Piv txwv li, qee cov chaw lag luam koom nrog cov PCI Express qhia nrog SATA cov chaw nres nkoj. Yog li, siv qhov M.2 drive qhov yuav tshem tawm ntawm plaub qhov chaw SATA. Lwm tus neeg mob. M.2 kuj yuav faib cov kab no nrog rau lwm lub PCI-Express expansion slots. Nco ntsoov xyuas seb lub Rooj Tswjhwm Saib puas tsim kom paub tseeb tias siv M.2 yuav tsis cuam tshuam nrog lwm txoj hauv kev siv SATA nyuaj drives , DVD lossis Blu-ray drives los yog lwm cov ntawv luam tawm.