Xa ishishini lisebenza ngedatha enkulu, iyunithi yokugcina ayibiyi diski enye, kodwa isethi yeediski, ukudibanisa kwabo, i-aggregate yomthamo ofunekayo. Kwaye kufuneka ilawulwe njengento edibeneyo. Ingqiqo yokugcina ubungakanani kunye ne-block-block aggregates ichazwe kakuhle ngokusebenzisa umzekelo we-JBOD - zombini njengefomathi yokudibanisa iidiski kunye nesixhobo somzimba.
Unako ukulinganisa isiseko sediski kungekhona nje "phezulu" ngokukhupha i-JBODs, kodwa "ngaphakathi" usebenzisa iimeko ezahlukeneyo zokuzalisa. Makhe sijonge ukuba oku kusebenza njani usebenzisa iWestern Digital Ultastar Data60 njengomzekelo.
Malunga nokuzaliswa
I-JBOD yiklasi eyahlukileyo yesixhobo somncedisi wokubekwa kwe-dense yediski, kunye nokufikelela kwii-channel ezininzi kubo ngokusingatha abaphathi nge-SAS. Abavelisi be-JBOD bazithengisa njengeediski ezingenanto, ngokuyinxenye okanye ezivalekileyo ngokupheleleyo - kuxhomekeke kwindlela okhetha ngayo. Ukuzalisa ukugcinwa ngokuthe ngcembe ngeediski njengoko imfuno ikhula ikuvumela ukuba usasaze iindleko zenkunzi ngokuhamba kwexesha. Kunenzuzo ukuthenga i-JBOD kunye nazo zonke iidiski ze-60 ezivela kwi-Western Digital - zibiza kakhulu. Kodwa ungathatha kwakhona ezaliswe ngokuyinxenye: ubuncinci bokucwangciswa kwe-Ultastar Data60 yi-24 drives.
Kutheni 24? Impendulo ilula: i-aerodynamics. "Umgangatho wegolide" JBOD 4U / 60 x 3.5 "uthathe ingcambu kwishishini ngenxa yezizathu eziphathekayo - ubungakanani besixhobo esifanelekileyo, ukufikelela, ukupholisa kakuhle. Iidiski ezingama-60 zicwangciswe njengemiqolo emi-5 yee-HDD ezili-12 nganye. Imiqolo ezaliswe ngokuyinxenye okanye ukunqongophala kweediski kwi-JBOD (umzekelo, umqolo nje omnye) kukhokelela ekutshatyalalisweni kobushushu okanye ukubuyisela umva komoya kumjelo ophakathi-uphawu loyilo lwe-Ultastar Data60, uphawu lwalo oluhlukileyo.
Kwii-JBOD zayo, i-WD isebenzisa itekhnoloji yokuvuthela idiskhi ye-ArcticFlow, imodelwe ngononophelo kwaye yaqinisekiswa. Yonke into yee-HDDs - ngokusebenza kwazo, ukusinda, kunye nokhuseleko lwedatha.
Undoqo we-ArcticFlow wehla ekwenziweni kokuqukuqela komoya okuzimeleyo kusetyenziswa abalandeli: iphambili ipholisa imiqolo yangaphambili yedrive, kwaye umoya ongena kwipaseji yomoya yangaphakathi enzulu kwimeko isetyenziselwa ukuvuthela iidrives kwi-JBOD yangasemva. indawo.
Kucacile ukuba kutheni ukuze i-ArcticFlow isebenze ngokufanelekileyo kuyimfuneko ukuqinisekisa ukuba iikhompatimenti ezingenanto zizaliswe. Ubuncinci bokucwangciswa kwe-24 drives, ilungiselelo kwi-Ultastar Data60 kufuneka iqale ukusuka kwindawo yangasemva.
Kuqwalaselo lwe-12-drive, ngaphandle kokujongana nokuchasana okuza kudala ilungiselelo lemiqolo emibini, ukuhamba komoya okushiya i-JBOD kubuyela umva kwindawo yangaphambili nakwinkqubo yokupholisa.
Kukho indlela yokuphucula imeko - ngakumbi kuyo kamva.
Malunga nokuxutywa
Kufanelekile ukwamkela ngokukhawuleza njenge-axiom ukuba injongo ye-JBOD kukugcinwa kwedatha elinganiselweyo. Isiphelo esivela koku kukuba: siyisebenzisela inani labantu bezixhobo ezifanayo. Ngenjongo ekugqibeleni ufikelele kumthamo wokugcina uyilo, ugcwalise onke amacandelo.
Kuthekani ngee-SSD? Esona sisombululo silungileyo (kwaye sichanekile) kukwakha indawo yokugcina ephezulu yokusebenza kwi-JBOF. Iimeko eziqinileyo zikhululekile ngakumbi apho. Ngelo xesha, i-Ultastar Data60 ivumela ukufakwa kwee-flash drives. Ngaphambi kokuba uqale i-JBOD hybridization, kufuneka uqale ulinganise i-pros - khetha i-SSD kuluhlu lwezinto ezihambelanayo (ngokungafaniyo ne-HDD, imeko enenkxaso ye-SSD igcwele ama-nuances). Kuya kufuneka kwakhona uchithe imali ekufakeni i-2,5-inch drives kwii-3,5-intshi bays.
Izixhobo ze-SSD enye kufuneka zibekwe kwindawo yangasemva ye-JBOD, ukuvala amacandelo angasetyenziswanga kunye neeplagi ezikhethekileyo - Drive Blanks. Oku kuthintela ukuhamba simahla komoya opholileyo, njengoko kuchaziwe ngasentla, ukukuthintela ukujikeleza kwakhona.
Ubuninzi be-24 SSDs bunokufakwa kwi-Ultastar Data60 chassis. Kwimeko nayiphi na into, ezi kufuneka zibe yimiqolo yokugqibela yendawo yangasemva.
Kutheni 24? Ukutshatyalaliswa kokushisa kwee-solid-state drives kuphezulu kuneempawu ezifanayo ze-HDD, ngenxa yesi sizathu, i-multi-row layout of disks kunye neentlobo ezahlukeneyo zeendaba aziyi kubethwa ngokufanelekileyo yi-ArcticFlow. Kwaye ukutshatyalaliswa kobushushu kuya kuba ngumngcipheko wokusebenza kwe-JBOD.
Kuyafaneleka ukuba uqaphele apha ukuba ngokusebenzisa ii-Drive Blanks unokunciphisa umphumo wokujikeleza komoya oshushu. Uyilo lwe-JBOD olunee-HDD ezili-12 luya kupholisa ngcono ukuba amacandelo angenanto ahlanganiswe ngeeplagi. Umenzi akazange athethe igama malunga neqhinga elinjalo, kodwa ilungelo lokuvavanya lihlala lizethu. Ngendlela, i-WD ayikuthinteli ukuzaliswa kwe-12-disc, nangona ingacebisi.
Izigqibo Eziluncedo
Nokuba nolwazi oluphezulu kunye ne-aerodynamics ye-JBOD inika ingcamango yokuba ekusebenzeni okuthembekileyo kokugcinwa kungcono ukuthembela kumava kunye neengcebiso zomphuhlisi. Iinkqubo ezenzeka ngaphakathi kwekheji yedisk zifuna uphando olusisiseko. Ukungahoywa kolwazi olufunyenweyo kugcwele iingxaki, ezibuthathaka kuyo yonke ingqiqo yokugcinwa kwemithamo engamakhulu e-terabytes.
Iyaziwa indlela imimiselo yomkhosi ebhalwa ngayo. Kwenzeka into efanayo ngoyilo lwe-JBOD. Ukuba izisombululo zexesha elidlulileyo zihlupheke kwi-layout apho inxalenye ye-interface ibekwe kwindawo "yokukhupha", evuthwe ngomoya oshushu, namhlanje i-Ultastar Data60 ikhululekile kule ngqungquthela. Zonke ezinye izinto eziye zafunyaniswa ziyilo ngummangaliso weteknoloji. Le yindlela efanele ukuphathwa ngayo.
umthombo: www.habr.com