iimveliso

3.3 I-Physical Configuration Winchester disk drives I-Winchester hard disk drives (enye, ezimbini, okanye ezine zinokuba khona) zifakwe kwiiTreyi ezimbini ze-Winchester Drive, ezihlala kwiNdibano yeDiski yaseWinchester ehlala kwiindawo eziphezulu ezimbini zebhodi yesiphaluka (i-slots 4 kunye ne-5) yemodyuli njengoko kuboniswe kwiMifanekiso 3-32. Unxibelelwano lwebhasi ye-SCSI i-Dual Small Computer Systems Interface, (SCSI) iintambo zeribhoni zebhasi ziqhagamshela ibhodi yesekethe ye-Smart Peripheral Controller I/O (SPCII/SPC2), ebekwe ngasemva kwe-Smart Peripheral Controller (SPC) ibhodi yesekethe (slot 2), ukuya kwiWinchester Drive Interface I/O (WDI yesekethe I/Oar Assembly ebekwe kwibhodi yedisk yeWinchester/O/WDI) 5). Ibhodi yesekethe yeWinchester Drive Interface (WDI), ekwiWinchester Disk Assembly (WDA), yandisa ibhasi ye-SCSI ngokusebenzisa ii-flex-circuits eziprintiweyo ezimbini ukuya kwi-Winchester disk drive (s) efakwe kwi-Winchester Drive Tray (s) njengoko kubonisiwe kwi-Figure 3-5. Ibhasi "izahlula" kwibhodi yesekethe ye-WDI I / O, inika i-interface yebhasi kwi-Tray nganye yeWinchester Drive. Ibhodi yesekethe yeSmart Peripheral Controller (SPC) idibanisa intambo yeribhoni yebhasi ye-SCSI kunye ne-flex-circuit eprintiweyo ene-drive enye okanye ezimbini kwitreyi nganye ekhoyo. Ibhasi ye-SCSI ipheliswa ziimodyuli zokuphelisa ezifakwe kwi-drive yokugqibela (ekupheleni). Ukupheliswa kwebhasi ye-SCSI Xa itreyi ine-Winchester disk drive enye ifakwe kuyo, i-drive ifakwe kwindawo yangaphambili kwaye kufuneka ibe neemodyuli ezintathu zokupheliswa kwebhasi ezifakwe kwi-drive ukuba yi-210 megabyte okanye i-445 megabyte drive. I-875 megabyte kunye ne-1.8 gigabyte drives ayinayo iimodyuli zokuyeka ibhasi. Endaweni yoko, iiterminators zebhasi zangaphakathi zinikwe amandla nge-elektroniki kwi-drive ngokukhetha ibhloko ye-jumper. Ukuba i-Winchester disk drive yesibini ikhona kwi-tray, i-drive yesibini ifakwe kwindawo yangasemva kwi-tray ngaphandle kweemodyuli ze-SCSI zokuphelisa ibhasi ezifakwe kuyo njengoko kubonisiwe kuMfanekiso 3-5. Ibhodi yesekethe ye-WDI, ehlala kwiNdibano yeDiski yaseWinchester, ineesethi ezimbini ze-SCSI i-resistor resistor terminators, isethi enye kwi-tray nganye. Iseti yezitshisi ziyasebenza xa amandla esusiwe kwiTreyi yeWinchester Drive ngokutshintsha amandla ngaphambili kwetreyi. Olu lungiselelo luvumela umqhubi ongaphumelelanga kwi-treyi ukuba isuswe kwaye ifakwe endaweni ngaphandle kokuphazamisa iqabane layo elingafunekiyo elifakwe kwenye itreyi, idibanisa ibhasi ye-SCSI efanayo.