Uphuhliso lweTekhnoloji yoQhagamshelo lwe-SAS: Uguquko lweSitoreji ukusuka kwi-Parallel ukuya kwi-High-Speed ​​Serial

Uphuhliso lweTekhnoloji yoQhagamshelo lwe-SAS: Uguquko lweSitoreji ukusuka kwi-Parallel ukuya kwi-High-Speed ​​Serial

Iinkqubo zokugcina idatha zanamhlanje azikhuli nje kuphela kwinqanaba le-terabit, zinezinga eliphezulu lokudluliselwa kwedatha, kodwa zikwasebenzisa amandla amancinci kwaye zithatha indawo encinci. Ezi nkqubo zikwafuna uqhagamshelo olungcono ukuze zibonelele ngokuguquguquka okungakumbi. Abayili bafuna uqhagamshelo oluncinci ukuze banike amazinga okudluliselwa kwedatha afunekayo ngoku okanye kwixesha elizayo. Kwaye kuthatha ngaphezulu kosuku olunye ukuba iinkcukacha zizalwe, ziphuhliswe kwaye zikhule kancinci kancinci. Ingakumbi kushishino lwe-IT, naluphi na ubuchwepheshe buhlala buphucuka kwaye butshintsha, kwaye iinkcukacha ze-SAS (Serial Attached SCSI, Serial SCSI) azikho ngaphandle. Njengomlandeli we-SCSI ehambelanayo, iinkcukacha ze-SAS bezisoloko zibonwa ngabantu kangangexesha elithile.

Kwiminyaka edlulileyo i-SAS ikhona, iinkcukacha zayo ziye zaphuculwa rhoqo. Nangona iprotokholi esisiseko ingatshintshanga kangako, iinkcukacha zezihlanganisi zangaphandle ziye zatshintsha izinto ezininzi. Olu luhlengahlengiso olwenziwe yi-SAS ukuze luhambelane nemeko yemarike. Umzekelo, ukuguquka kweenkcukacha zezihlanganisi ezifana ne-MINI SAS 8087, i-SFF-8643, kunye ne-SFF-8654 kuye kwatshintsha kakhulu izisombululo zekhebula njengoko i-SAS itshintshe ukusuka kwitekhnoloji ehambelanayo ukuya kwi-serial. Ngaphambili, i-parallel SCSI yayinokusebenza ukuya kuthi ga kwi-320 Mb/s ngaphezulu kweetshaneli ezili-16 nokuba kukwimo enye okanye eyahlukileyo. Okwangoku, i-SAS 3.0 interface, esasetyenziswa kakhulu kwindawo yokugcina izinto, inikezela nge-bandwidth ekhawulezayo kabini kune-SAS 3 ende engaphuculwanga, ifikelela kwi-24 Gbps, emalunga ne-75% ye-bandwidth ye-PCIe 3.0 x4 solid-state drive eqhelekileyo. I-MiniSAS HD connector yamva nje echazwe kwi-SAS-4 specification incinci ngobukhulu kwaye inokufikelela kuxinano oluphezulu. Ubungakanani besixhumi samva nje seMini-SAS HD sisiqingatha soxhumi lokuqala lwe-SCSI kunye ne-70% yesixhumi se-SAS. Ngokungafaniyo nentambo yokuqala ye-SCSI parallel, zombini i-SAS kunye ne-Mini-SAS HD zineendlela ezine. Nangona kunjalo, kunye nesantya esiphezulu, uxinano oluphezulu, kunye nokuguquguquka okukhulu, kukwakho nokwanda kobunzima. Ngenxa yokuba isixhumi sincinci, abavelisi beentambo, abadibanisi beentambo, kunye nabayili beenkqubo kufuneka banikele ingqalelo esondeleyo kwiiparameter zokuthembeka kwesignali yendibano yonke yeentambo.

Zonke iintlobo zeentambo ze-SAS kunye nezihlanganisi, kulula kakhulu ukuzenza zibukeke zintle kangaka… Zingaphi ozibonileyo? Ezo zisetyenziswa kushishino, kunye nezo zemveliso zabathengi? Umzekelo, intambo ye-MINI SAS 8087 ukuya kwi-4X SATA 7P Male, intambo ye-SFF-8643 ukuya kwi-SFF-8482, intambo ye-SlimSAS SFF-8654 8i, njl.

Ububanzi (ekhohlo, embindini) bentambo yeMini-SAS HD yi-70% yobubanzi bentambo yeSAS (ekunene).

Ayingabo bonke abavelisi beentambo abanokubonelela ngemiqondiso yesantya esiphezulu ekumgangatho ophezulu ukuhlangabezana neemfuno zokuthembeka kwesignali kwiinkqubo zokugcina. Abavelisi beentambo kufuneka banikezele ngezisombululo ezikumgangatho ophezulu nezingabizi kakhulu kwiinkqubo zokugcina zamva nje. Umzekelo, intambo ye-SFF-8087 ukuya kwi-SFF-8088 okanye intambo ye-MCIO 8i ukuya kwi-2 OCuLink 4i. Ukuvelisa izinto zentambo ezizinzileyo nezihlala ixesha elide, kufuneka kuqwalaselwe izinto ezininzi. Ukongeza ekugcineni umgangatho wokucubungula kunye nenkqubo yokucubungula, abayili kufuneka banikele ingqalelo esondeleyo kwiiparameter zokuthembeka kwesignali, ezizezona kanye ezenza ukuba iintambo zesixhobo sokugcina esisantya esiphezulu sanamhlanje zibe nokwenzeka.