I-LAN kunye ne-SAN imele iNethiwekhi yeNdawo yeNgingqi kunye neNethiwekhi yeNdawo yokuGcina, ngokulandelelana, kwaye zombini ziinkqubo zothungelwano oluphambili olusetyenziswa ngokubanzi namhlanje.
I-LAN yingqokelela yeekhompyuter kunye neeperipherals ezabelana ngekhonkco lonxibelelwano olunacingo okanye olungenazingcingo kwiiseva ezibekwe kwiindawo ezahlukeneyo zejografi. I-SAN kuthungelwano, kwelinye icala, ibonelela ngesantya esiphezulu kwaye yenzelwe uthungelwano lwabucala, ivumela uqhagamshelo olungenamthungo lweeseva ezininzi ezinezixhobo ezahlukeneyo zokugcina ekwabelwana ngazo.
Ngokunjalo, amacandelo amabini aphambili asetyenziswa kuthungelwano lwekhompyutha iqabane litshintsha i-LAN kunye ne-SAN. Nangona iiswitshi ze-LAN kunye nokutshintsha kwe-SAN zimbini zombini iitshaneli zonxibelelwano lwedatha, zineyantlukwano ethile, ngoko ke makhe sijonge ngezantsi.
1 Yintoni ukutshintsha i-LAN?
Ukutshintsha kwe-LAN yindlela yokutshintsha ipakethi esetyenziselwa ukuhanjiswa kweepakethi phakathi kweekhompyuter kwi-LAN ngaphakathi kwenethiwekhi yendawo yendawo. Obu buchule budlala indima ebalulekileyo kuyilo lwenethiwekhi kwaye lunokuphucula kakhulu ukusebenza kwe-LAN kunye nokunciphisa imiqobo ye-bandwidth. Kukho iintlobo ezine zokutshintsha kwe-LAN:
Ukutshintsha i-MLS ezininzi;
Uluhlu lwesi-4 sokutshintsha;
Uluhlu lwe-3 lokutshintsha;
Uluhlu lwesi-2 luyatshintsha.
Isebenza njani iswitshi yeLAN?
Ukutshintsha kwe-LAN kukutshintsha kwe-Ethernet esebenza ngokusekwe kwiprotocol ye-IP kwaye ibonelela ngoqhagamshelo oluguquguqukayo phakathi kwabathumeli nabamkeli ngothungelwano oludityanisiweyo lwamazibuko kunye namakhonkco. Eli lungiselelo livumela inani elikhulu labasebenzisi bokugqibela ukuba babelane ngezibonelelo zenethiwekhi. Ukutshintsha kwe-LAN kusebenza njengokutshintsha kwepakethi kwaye kunokusingatha ukuhanjiswa kwedatha ezininzi ngaxeshanye. Benza oku ngokuphonononga idilesi yendawo yokufikela yesakhelo sedatha nganye kwaye ngoko nangoko bayiqondise kwizibuko elithile elinxulumene nesixhobo esicetywayo sokufumana.
Indima ephambili yokutshintsha kwe-LAN kukuzalisekisa iimfuno zeqela labasebenzisi ukuze bakwazi ukufikelela ngokudibeneyo kwizibonelelo ekwabelwana ngazo kwaye banxibelelane ngaphandle komthungo. Ngokusebenzisa amandla okutshintsha kwe-LAN, inxalenye enkulu yetrafikhi yenethiwekhi inokufumaneka kumacandelo e-LAN adityanisiweyo. Olu lwahlulo lunciphisa ngokufanelekileyo ukuxinana kwe-LAN, okukhokelela ekugqithisweni kwedatha elula kunye nokusebenza kwenethiwekhi.
2 Yintoni ukutshintsha i-SAN?
Indawo yokuGcina iNethiwekhi yokutshintshela iSAN yindlela ekhethekileyo yokudala uxhulumaniso phakathi kweeseva kunye namachibi okugcinwa okwabelwana ngawo ngenjongo yodwa yokuququzelela ukudluliselwa kwedatha enxulumene nokugcinwa.
Ngokutshintsha kwe-SAN, kuyenzeka ukwenza uthungelwano olukhulu, olunesantya esiphezulu sogcino oludibanisa iiseva ezininzi kunye nokufikelela kwizixa ezikhulu zedatha, ezihlala zifikelela kwiipetabytes. Kumsebenzi wabo osisiseko, i-SAN itshintsha ngokufanelekileyo ilungelelanisa i-traffic phakathi kweeseva kunye nezixhobo zokugcina ngokuhlola iipakethi kunye nokuzikhomba kwiindawo ezigqityiweyo. Ngokuhamba kwexesha, iiswitshi zokugcinwa kwendawo yenethiwekhi ziye zavela ukuze zibandakanye iimpawu eziphambili ezifana nokuphindaphinda kwendlela, ukuxilongwa kwenethiwekhi, kunye nokuziva ngokuzenzekelayo kwe-bandwidth.
Zisebenza njani iiswitshi zeFiber Channel?
Ukutshintsha kweFiber Channel yinxalenye ephambili kwindawo yokugcina inethiwekhi yeSAN enceda ukudlulisa idatha ngokufanelekileyo phakathi kweeseva kunye nezixhobo zokugcina. Umtshintshi usebenza ngokudala inethiwekhi yabucala enesantya esiphezulu eyenzelwe ukugcinwa kwedatha kunye nokufunyanwa.
Eyona nto iphambili, utshintsho lweFiber Channel luxhomekeke kwi-hardware ekhethekileyo kunye nesofthiwe yokulawula kunye nokuqondisa i-traffic data. Isebenzisa iprotocol yeFiber Channel, iprotocol eyomeleleyo nethembekileyo yonxibelelwano eyenzelwe iimeko zeSAN. Njengoko idatha ithunyelwa kwiseva ukuya kwisixhobo sokugcina kwaye ngokuchaseneyo, ifakwe kwiifreyimu zeFiber Channel, iqinisekisa ukunyaniseka kwedatha kunye nokuhanjiswa kwesantya esiphezulu.
Utshintsho lwe-SAN lusebenza njengepolisa lezendlela kwaye limisela eyona ndlela ilungileyo yedatha yokuhamba nge-SAN. Iphonononga umthombo kunye needilesi zokusingwa kwiifreyimu zeFiber Channel zokuhambisa ngokufanelekileyo iipakethi. Le ndlela ikrelekrele inciphisa ukubambezeleka kunye nokuxinana, iqinisekisa ukuba idatha ifikelela kwindawo ekuyiwa kuyo ngokukhawuleza nangokuthembekileyo.
Ngokusisiseko, i-Fiber Channel itshintsha i-orchestrate ukuhamba kwedatha kwi-SAN, ukuphucula ukusebenza kunye nokuthembeka kwiindawo ezinzulu zedatha.
3 Zahluke njani?
Ukuthelekisa ukutshintshela kwe-LAN kwi-SAN kunokucingelwa kwakhona njengokuthelekisa i-SAN yokutshintsha kwinethiwekhi, okanye i-Fiber Channel itshintshe kwi-Ethernet. Makhe sijonge umahluko ophambili phakathi kokutshintsha kwe-LAN kunye nokutshintsha kwe-SAN.
Umahluko kwiSicelo
Ukutshintsha kwe-LAN kwasekuqaleni kuyilelwe umsesane wophawu kunye nothungelwano lwe-FDDI kwaye kamva zatshintshwa yi-Ethernet. Ukutshintsha kwe-LAN kudlala indima ebalulekileyo ekuphuculeni ukusebenza kakuhle kwee-LAN kunye nokusombulula ngempumelelo imingeni ekhoyo ye-bandwidth. I-LAN ingaqhagamshela ngaphandle komthungo izixhobo ezahlukeneyo ezinje ngabancedisi befayile, abashicileli, uluhlu logcino, iidesktop, njalo njalo, kunye nokutshintsha kweLAN kunokulawula ngokusebenzayo uthutho phakathi kwezi siphelo zahlukeneyo.
Kwaye ukutshintshwa kwe-SAN yenzelwe uthungelwano oluphezulu lokuqinisekisa ukuba i-latency ephantsi kunye nelahleko yokudluliselwa kwedatha. Yenzelwe ngononophelo ukulawula ngokufanelekileyo imithwalo yentengiselwano enzima, ngokukodwa kwiinethiwekhi zeFiber Channel eziphezulu. Ingaba i-Ethernet okanye i-Fiber Channel, iiswitshi zenethiwekhi yendawo yokugcina zinikezelwe kwaye zilungiselelwe ukuphatha i-traffic yokugcina.
Iiyantlukwano zokuSebenza
Ngokuqhelekileyo, iinguqu ze-LAN zisebenzisa i-copper kunye ne-fiber interfaces kwaye zisebenza kwi-IP-based Ethernet networks. I-Layer 2 LAN switching inikezela ngeenzuzo zokudluliselwa kwedatha ngokukhawuleza kunye ne-latency encinci.
Igqwesa kwiimpawu ezifana neVoIP, QoS kunye nengxelo ye-bandwidth. Izitshixo zeLayer 3 zeLAN zibonelela ngeempawu ezifanayo njengeerotha. Ngokubhekiselele kwi-Layer 4 LAN Switch, yinguqu ephambili ye-Layer 3 LAN Switch enika izicelo ezongezelelweyo ezifana neTelnet kunye neFTP.Ngaphezu koko, i-LAN Switch ixhasa iiprotocol ezibandakanya kodwa zingaphelelanga kwi-SNMP, i-DHCP, i-Apple Talk, i-TCP / IP, kunye ne-IPX. Konke kuzo zonke, i-LAN Switch iyindleko esebenzayo, isisombululo sothungelwano esilula ukusisebenzisa esiLungileyo kwishishini kunye neemfuno zenethiwekhi eziphambili.
Iiswitshi ze-SAN zakha phezu kwesiseko sothungelwano lokugcina lwe-iSCSI, olubandakanya iFiber Channel kunye nobuchwepheshe be-iSCSI. Olona phawu lubalulekileyo kukuba iiswitshi ze-SAN zibonelela ngezakhono zogcino eziphezulu ngaphezulu kokutshintsha kwe-LAN. Iiswitshi zeFiber Channel nazo zinokuba zizitshixo ze-Ethernet.
Ngokufanelekileyo, i-Ethernet-based switch ye-SAN iya kunikezelwa ekulawuleni i-traffic yokugcina ngaphakathi kwenethiwekhi yendawo yokugcina ye-IP, ngaloo ndlela iqinisekisa ukusebenza okuqikelelweyo. Kwakhona, ngokudibanisa iiswitshi ze-SAN, uthungelwano olubanzi lwe-SAN lunokwenziwa ukudibanisa iiseva ezininzi kunye namazibuko okugcina.
4 Ndikhetha njani iswitshi elungileyo?
Xa uqwalasela i-LAN vs. SAN, ukhetho lokutshintsha kwe-LAN okanye utshintsho lwe-SAN luba lubalulekileyo. Ukuba iimfuno zakho ziquka iiprothokholi zokwabelana ngefayile ezifana ne-IPX okanye i-AppleTalk, ngoko ke i-IP-based LAN iswitshi lolona khetho lungcono kwisixhobo sokugcina. Ngakolunye uhlangothi, ukuba ufuna ukutshintshela ukuxhasa i-Fiber Channel-based storage, inethiwekhi yendawo yokugcina indawo iyacetyiswa.
Ukutshintsha kwe-LAN kuququzelela unxibelelwano ngaphakathi kwe-LAN ngokuqhagamshela izixhobo ngaphakathi kwenethiwekhi efanayo.
Ukutshintsha kweFiber Channel, ngakolunye uhlangothi, ngokuyinhloko kusetyenziselwa ukudibanisa izixhobo zokugcina kwiiseva zokugcinwa ngokufanelekileyo kunye nokubuyiswa kwedatha. Olu tshintsho luyahluka kwiindleko, ukulinganisa, i-topology, ukhuseleko, kunye nomthamo wokugcina. Ukhetho phakathi kwabo luxhomekeke kwiimfuno ezithile zokusetyenziswa.
Ukutshintsha kwe-LAN akubizi kwaye kulula ukuyiqwalasela, ngelixa iiswitshi ze-SAN zibiza kakhulu kwaye zifuna uqwalaselo oluntsonkothileyo.
Ngamafutshane, utshintsho lwe-LAN kunye nokutshintsha kwe-SAN ziintlobo ezahlukeneyo zokutshintsha kwenethiwekhi, nganye idlala indima ekhethekileyo kwinethiwekhi.
Ixesha lokuposa: Oct-17-2024