LAN thiab SAN sawv cev rau Local Area Network thiab Storage Area Network, raws li, thiab ob qho tib si yog cov kab ke khaws cia tseem ceeb uas siv dav niaj hnub no.
Ib lub LAN yog ib pawg ntawm cov khoos phis tawj thiab cov khoom siv uas sib koom ua ke txuas lus wired lossis wireless rau cov servers nyob hauv thaj chaw sib txawv. Ib lub SAN hauv lub network, ntawm qhov tod tes, muab kev sib txuas ceev ceev thiab tsim los rau cov tes hauj lwm ntiag tug, tso cai rau kev sib txuas lus ntawm ntau lub servers nrog ntau yam khoom siv cia khoom sib koom.
Yog li ntawd, ob lub ntsiab lus tseem ceeb siv hauv lub network computer yog LAN switches thiab SAN switches. Txawm hais tias LAN switches thiab SAN switches yog ob txoj kev sib txuas lus cov ntaub ntawv, lawv muaj qee qhov sib txawv, yog li cia peb saib ze dua hauv qab no.
1. Kev hloov pauv LAN yog dab tsi?
LAN switching yog ib txoj kev hloov pauv pob ntawv siv rau kev xa cov pob ntawv ntawm cov khoos phis tawj ntawm LAN hauv lub network hauv zos. Cov txheej txheem no ua lub luag haujlwm tseem ceeb hauv kev tsim network thiab tuaj yeem txhim kho LAN kev ua haujlwm zoo thiab txo cov kev txwv bandwidth. Muaj plaub hom LAN switching:
Kev hloov pauv ntau txheej MLS;
Txheej 4 hloov;
Txheej 3 hloov;
Kev hloov txheej 2.
Lub LAN switch ua haujlwm li cas?
Lub LAN switch yog lub Ethernet switch uas ua haujlwm raws li IP protocol thiab muab kev sib txuas yooj ywm ntawm cov neeg xa thiab cov neeg txais los ntawm kev sib txuas ntawm cov chaw nres nkoj thiab cov kev sib txuas. Qhov kev npaj no tso cai rau ntau tus neeg siv kawg sib koom cov peev txheej hauv network. LAN switches ua haujlwm ua cov pob ntawv hloov pauv thiab tuaj yeem tswj hwm ntau cov ntaub ntawv xa tawm tib lub sijhawm. Lawv ua qhov no los ntawm kev tshuaj xyuas qhov chaw nyob ntawm txhua lub thav duab ntaub ntawv thiab tam sim ntawd coj nws mus rau qhov chaw nres nkoj tshwj xeeb cuam tshuam nrog lub cuab yeej txais tos.
Lub luag haujlwm tseem ceeb ntawm LAN switch yog ua kom tau raws li qhov xav tau ntawm ib pawg neeg siv kom lawv tuaj yeem nkag mus rau cov peev txheej sib koom ua ke thiab sib txuas lus zoo. Los ntawm kev siv cov peev xwm ntawm LAN switches, ib feem loj ntawm cov tsheb khiav hauv network tuaj yeem nyob hauv cov ntu LAN me me. Qhov kev faib tawm no ua rau txo qis tag nrho LAN congestion, ua rau kev xa cov ntaub ntawv zoo dua thiab kev ua haujlwm hauv network.
2. Kev hloov pauv SAN yog dab tsi?
Kev hloov pauv ntawm thaj chaw cia khoom (SAN switching) yog ib txoj kev tshwj xeeb los tsim kev sib txuas ntawm cov servers thiab cov pas dej cia khoom sib koom rau lub hom phiaj nkaus xwb los pab txhawb kev xa cov ntaub ntawv ntsig txog kev cia khoom.
Nrog SAN switches, nws muaj peev xwm tsim cov network loj, ceev ceev uas txuas ntau lub servers thiab nkag mus rau ntau cov ntaub ntawv, feem ntau ncav cuag petabytes. Hauv lawv txoj haujlwm yooj yim, SAN switches ua haujlwm sib koom tes zoo ntawm cov servers thiab cov khoom siv cia khoom los ntawm kev tshuaj xyuas cov pob ntawv thiab coj lawv mus rau qhov kawg uas tau teem tseg. Dhau sijhawm, network area storage switches tau hloov zuj zus los suav nrog cov yam ntxwv siab heev xws li txoj kev rov ua dua, kev kuaj mob network, thiab kev ntsuas bandwidth tsis siv neeg.
Cov Fibre Channel switches ua haujlwm li cas?
Lub Fibre Channel switch yog ib qho tseem ceeb hauv lub network SAN uas pab xa cov ntaub ntawv tau zoo ntawm cov servers thiab cov khoom siv cia khoom. Lub switch ua haujlwm los ntawm kev tsim lub network ntiag tug ceev ceev uas tsim los rau kev khaws cia thiab rov qab tau cov ntaub ntawv.
Hauv nws lub hauv paus, lub Fibre Channel switch vam khom cov khoom siv kho vajtse thiab software tshwj xeeb los tswj thiab coj cov ntaub ntawv khiav. Nws siv Fibre Channel protocol, ib qho kev sib txuas lus ruaj khov thiab txhim khu kev qha uas tsim rau SAN ib puag ncig. Thaum cov ntaub ntawv raug xa los ntawm lub server mus rau lub cuab yeej khaws cia thiab vice versa, nws tau encapsulated hauv Fibre Channel thav duab, ua kom ntseeg tau tias cov ntaub ntawv muaj kev ncaj ncees thiab kev xa mus sai.
Lub SAN switch ua haujlwm ua tus tub ceev xwm thiab txiav txim siab txoj kev zoo tshaj plaws rau cov ntaub ntawv mus ncig los ntawm SAN. Nws tshuaj xyuas qhov chaw nyob thiab qhov chaw nyob hauv Fibre Channel frames rau kev xa cov pob ntawv zoo. Qhov kev xa xov ntse no txo qhov latency thiab kev sib tsoo, ua kom ntseeg tau tias cov ntaub ntawv mus txog nws qhov chaw sai thiab ntseeg tau.
Yeej, Fibre Channel switches tswj cov ntaub ntawv ntws hauv SAN, ua kom zoo dua kev ua tau zoo thiab kev ntseeg tau hauv cov chaw muaj ntaub ntawv ntau.
3 Lawv txawv li cas?
Kev sib piv LAN switch rau SAN switch kuj tseem tuaj yeem xav txog kev sib piv SAN switch rau network switch, lossis Fibre Channel switch rau Ethernet switch. Cia peb saib qhov sib txawv tseem ceeb ntawm LAN switches thiab SAN switches.
Kev Sib Txawv ntawm Daim Ntawv Thov
Cov LAN switches thawj zaug tau tsim los rau token ring thiab FDDI networks thiab tom qab ntawd tau hloov los ntawm Ethernet. LAN switches ua lub luag haujlwm tseem ceeb hauv kev txhim kho qhov ua tau zoo ntawm LANs thiab daws cov teeb meem bandwidth uas twb muaj lawm. LANs tuaj yeem txuas ntau yam khoom siv xws li cov ntaub ntawv servers, cov tshuab luam ntawv, cov chaw khaws cia, desktops, thiab lwm yam, thiab LAN switches tuaj yeem tswj hwm cov tsheb khiav ntawm cov chaw kawg sib txawv no tau zoo.
Thiab lub SAN switch yog tsim los rau cov tes hauj lwm ua tau zoo kom ntseeg tau tias muaj kev xa cov ntaub ntawv qeeb thiab tsis poob. Nws yog tsim los kom zoo los tswj cov kev thauj khoom hnyav, tshwj xeeb tshaj yog nyob rau hauv cov tes hauj lwm Fibre Channel ua tau zoo. Txawm hais tias Ethernet lossis Fibre Channel, cov chaw cia khoom network switches tau mob siab rau thiab ua kom zoo dua los tswj cov tsheb cia khoom.
Kev Sib Txawv ntawm Kev Ua Tau Zoo
Feem ntau, LAN switches siv tooj liab thiab fiber interfaces thiab ua haujlwm ntawm IP-based Ethernet networks. Txheej 2 LAN switching muab cov txiaj ntsig ntawm kev xa cov ntaub ntawv sai thiab tsawg kawg latency.
Nws ua tau zoo heev hauv cov yam ntxwv xws li VoIP, QoS thiab bandwidth reporting. Layer 3 LAN switches muaj cov yam ntxwv zoo sib xws li routers. Raws li rau Layer 4 LAN Switch, nws yog ib qho version siab heev ntawm Layer 3 LAN Switch uas muaj cov ntawv thov ntxiv xws li Telnet thiab FTP. Tsis tas li ntawd, LAN Switch txhawb nqa cov protocols suav nrog tab sis tsis txwv rau SNMP, DHCP, Apple Talk, TCP / IP, thiab IPX. Tag nrho hauv txhua qhov, LAN Switch yog ib qho kev daws teeb meem networking pheej yig, yooj yim-rau-xa tawm uas yog Zoo tagnrho rau kev lag luam thiab kev xav tau networking siab heev.
Cov hloov SAN tsim los ntawm lub hauv paus ntawm iSCSI cia tes hauj lwm, suav nrog Fibre Channel thiab iSCSI thev naus laus zis. Qhov tseem ceeb tshaj plaws yog tias cov hloov SAN muaj peev xwm khaws cia zoo dua li cov hloov LAN. Cov hloov Fibre Channel kuj tseem tuaj yeem yog Ethernet hloov.
Qhov zoo tshaj plaws, lub Ethernet-based SAN switch yuav tsum tau mob siab rau kev tswj hwm cov tsheb khiav cia khoom hauv IP storage area network, yog li ua kom ntseeg tau tias muaj kev ua tau zoo kwv yees tau. Tsis tas li ntawd, los ntawm kev sib txuas SAN switches, lub network SAN dav dav tuaj yeem tsim los txuas ntau lub servers thiab cov chaw nres nkoj cia khoom.
4 Kuv yuav xaiv lub khawm kom raug li cas?
Thaum xav txog LAN piv rau SAN, qhov kev xaiv ntawm LAN switch lossis SAN switch yuav tseem ceeb heev. Yog tias koj xav tau kev sib koom cov ntaub ntawv xws li IPX lossis AppleTalk, ces IP-based LAN switch yog qhov kev xaiv zoo tshaj plaws rau lub cuab yeej khaws cia. Ntawm qhov tod tes, yog tias koj xav tau lub switch los txhawb Fibre Channel-based storage, network area storage switch yog qhov pom zoo.
Cov LAN switches pab txhawb kev sib txuas lus hauv LAN los ntawm kev txuas cov khoom siv hauv tib lub network.
Cov Fibre Channel switches, ntawm qhov tod tes, feem ntau yog siv los txuas cov khoom siv cia khoom rau cov servers rau kev khaws cia thiab rov qab tau cov ntaub ntawv zoo. Cov switches no sib txawv ntawm tus nqi, scalability, topology, kev ruaj ntseg, thiab peev xwm cia khoom. Qhov kev xaiv ntawm lawv nyob ntawm qhov xav tau kev siv tshwj xeeb.
LAN switches pheej yig thiab yooj yim rau kev teeb tsa, thaum SAN switches kim heev thiab xav tau kev teeb tsa nyuaj dua.
Hauv ntej, LAN switches thiab SAN switches yog ntau hom network switches, txhua tus ua lub luag haujlwm tshwj xeeb hauv network.
Lub sijhawm tshaj tawm: Lub Kaum Hli-17-2024