Qhov kev muaj koob meej zuj zus ntawm Network Attached Storage (NAS) rau cov neeg siv hauv tsev qhia txog yuav ua li cas cov thev naus laus zis cuam tshuam ob qhov kev xav tau: NAS tuaj yeem ua raws li huab huab server thaum tseem tiv thaiv koj cov ntaub ntawv. Qhov Kev Sib Txuas Sib Txuas Hauv Network no piav qhia seb NAS tau pib li cas thiab nws ua haujlwm li cas niaj hnub no.
Koj tuaj yeem siv NAS cia li nrog Linux, Windows, thiab Mac computers.
How Storage Evolved
Nyob rau xyoo thaum ntxov ntawm lub computer kiv puag ncig, floppy drives tau dav siv los qhia cov ntaub ntawv. Niaj hnub no, txawm li cas los xij, qhov nruab nrab tus neeg khaws cia xav tau ntau tshaj qhov muaj peev xwm floppy. Cov lag luam tam sim no tuav cov ntaub ntawv hluav taws xob ntau ntxiv thiab kev nthuav qhia, suav nrog cov yeeb yaj kiab. Cov neeg siv computer hauv tsev, nrog rau qhov tshwm sim ntawm MP3 cov ntaub ntawv suab paj nruag thiab JPEG cov duab, kuj xav tau ntau dua thiab yooj yim khaws cia.
Central cov ntaub ntawv servers siv cov neeg siv khoom / server networking thev naus laus zis los daws qee qhov teeb meem khaws cia cov ntaub ntawv no. Hauv nws daim ntawv yooj yim tshaj plaws, cov ntaub ntawv server muaj PC lossis workstation hardware khiav lub network operating system uas txhawb nqa cov ntaub ntawv sib koom. Cov hard drives nruab rau hauv cov neeg rau zaub mov muab gigabytes ntawm qhov chaw ib disk, thiab daim kab xev txuas nrog cov servers tuaj yeem txuas ntxiv lub peev xwm no.
Cov ntaub ntawv cov ntaub ntawv khav theeb ntev ntev ntawm kev ua tiav, tab sis ntau lub tsev, pawg ua haujlwm, thiab cov lag luam me tsis tuaj yeem ua pov thawj tias muab lub khoos phis tawj dav dav dav rau cov haujlwm khaws cia cov ntaub ntawv yooj yim. Nov yog qhov twg NAS los ua si.
Rau qhov xav tau tsawg dua qhov xav tau, cov hard drive sab nraud kuj yog qhov kev xaiv.
NAS yog dab tsi?
NAS nyuaj rau cov txheej txheem cov ntaub ntawv-neeg rau zaub mov los ntawm kev tsim cov tshuab tsim tshwj xeeb rau kev khaws cov ntaub ntawv. Hloov chaw pib nrog lub khoos phis tawj dav dav thiab teeb tsa lossis tshem tawm cov yam ntxwv ntawm lub hauv paus ntawd, NAS tsim qauv pib nrog cov pob txha pob txha tsim nyog los txhawb kev hloov ntaub ntawv thiab ntxiv cov yam ntxwv los ntawm hauv qab mus.
Zoo li lwm cov ntaub ntawv servers, NAS ua raws tus neeg siv khoom / tus qauv tsim. Ib qho khoom siv kho vajtse nkaus xwb, feem ntau hu ua NAS lub thawv lossis NAS lub taub hau, ua raws li kev sib tshuam ntawm NAS thiab cov neeg siv khoom siv network. Cov NAS li no yuav tsum tsis txhob saib, keyboard, lossis nas. Lawv feem ntau khiav ib qho kev khiav hauj lwm embedded es tsis yog tag nrho-featured network operating system. Ib lossis ntau dua disk (thiab tejzaum nws daim kab xev) tuaj yeem txuas rau ntau NAS systems kom muaj peev xwm ntxiv. Cov neeg siv khoom ib txwm txuas mus rau NAS lub taub hau, txawm li cas los xij, tsis yog rau ib tus neeg cia khoom.
Cov neeg siv feem ntau nkag mus rau NAS ntawm kev sib txuas Ethernet. NAS tshwm nyob rau hauv lub network raws li ib tug "node," uas yog lub taub hau ntaus ntawv tus IP chaw nyob.
NAS tuaj yeem khaws cov ntaub ntawv uas tshwm sim hauv daim ntawv ntawm cov ntaub ntawv, xws li email inboxes, cov ntsiab lus hauv web, chaw taws teeb thaub qab, thiab ntau dua. Zuag qhia tag nrho, NAS siv qhov sib npaug ntawm cov ntaub ntawv ib txwm siv.
NAS cov tshuab siv zog ua haujlwm txhim khu kev qha thiab kev tswj hwm yooj yim. Lawv feem ntau suav nrog cov yam ntxwv ua tau zoo xws li qhov chaw disk quotas, ruaj ntseg authentication, lossis kev xa email ceeb toom tsis siv neeg yuav tsum kuaj pom qhov yuam kev.
NAS Protocols
Kev sib txuas lus nrog NAS lub taub hau tshwm sim dhau TCP / IP. Tshwj xeeb tshaj yog, cov neeg siv khoom siv ib qho ntawm ntau cov txheej txheem qib siab (kev thov lossis txheej xya txheej txheem hauv OSI qauv) ua rau saum TCP / IP.
Ob daim ntawv thov kev cai feem ntau cuam tshuam nrog NAS yog Sun Network File System (NFS) thiab Common Internet File System (CIFS). Ob leeg NFS thiab CIFS ua haujlwm hauv cov neeg siv khoom / server zam. Ob leeg predate niaj hnub NAS los ntawm ntau xyoo; thawj cov haujlwm ntawm cov kev cai no tau tshwm sim hauv xyoo 1980s.
NFS yog tsim los rau kev sib qhia cov ntaub ntawv ntawm UNIX systems thoob plaws LAN. Kev txhawb nqa rau NFS sai sai nthuav dav kom suav nrog cov tshuab tsis yog UNIX; Txawm li cas los xij, feem ntau NFS cov neeg siv khoom niaj hnub no yog cov khoos phis tawj khiav qee qhov tsw ntawm UNIX operating system.
Lub CIFS yav tas los hu ua Server Message Block (SMB). SMB yog tsim los ntawm IBM thiab Microsoft los txhawb nqa cov ntaub ntawv sib koom hauv DOS. Raws li cov txheej txheem tau siv dav hauv Windows, lub npe hloov mus rau CIFS. Tib txoj cai no tshwm sim hnub no hauv UNIX systems raws li ib feem ntawm Samba pob.
Ntau lub NAS kuj txhawb Hypertext Transfer Protocol (HTTP). Cov neeg siv khoom feem ntau tuaj yeem rub tawm cov ntaub ntawv hauv lawv lub vev xaib los ntawm NAS uas txhawb HTTP. NAS systems kuj feem ntau ntiav HTTP ua tus txheej txheem nkag mus rau lub vev xaib kev tswj hwm tus neeg siv cuam tshuam.
