ngwaahịa

3.3 Physical Configuration Winchester disk draịva A na-etinye draịva diski ike Winchester (otu, abụọ, ma ọ bụ anọ) na trays Winchester Drive abụọ, bi na Winchester Disk Assembly nke nwere oghere bọọdụ sekit abụọ dị elu (oghere 4 na 5) nke modul dị ka e gosiri na eserese 3-2 na 3-3. Njikọ ụgbọ ala SCSI Dual Small Computer Systems Interface, (SCSI) eriri rịbọn ụgbọ ala jikọọ bọọdụ sekit Smart Peripheral Controller I/O (SPCII/SPC2), nke dị n'azụ bọọdụ sekit nke Smart Peripheral Controller (SPC) (oghere 2), na Winchester Drive Interface I/O (WDI I/O/WDI) nke dị na Winchester Drive Interface I/O (WDI I/O/WDI) nke dị na Winchester Drive 5). Winchester Drive Interface (WDI) bọọdụ sekit nke dị na Winchester Disk Assembly (WDA), na-agbatị ụgbọ ala SCSI site na flex-circuits abụọ ebipụtara gaa na Winchester disk mbanye (s) nke etinyere na Winchester Drive Tray(s) dị ka e gosiri na eserese 3-5. Ụgbọ ala ahụ “na-ekewa” na bọọdụ sekit WDI I/O, na-enye interface ụgbọ ala na tray Winchester Drive ọ bụla. Igwe sekit Smart Peripheral Controller (SPC) na-ejikọ eriri ụgbọ ala SCSI yana flex-circuit nwere otu draịva ma ọ bụ abụọ na traị ọ bụla dị ugbu a. Akwụsịla bọs SCSI site na modul nkwụsị arụnyere na draịva ikpeazụ (njedebe). Nkwụsị ụgbọ ala SCSI Mgbe tray nwere otu Winchester disk mbanye na ya, a na-etinye draịva ahụ n'ihu ọnọdụ ma ọ ga-enwerịrị modul nkwụsị ụgbọ ala atọ na draịva ma ọ bụrụ na ọ bụ 210 megabyte ma ọ bụ 445 megabyte mbanye. Megabyte 875 na 1.8 gigabyte draịva enweghị modul nkwụsị ụgbọ ala. Kama nke ahụ, a na-eme ka ndị na-akwụsị ụgbọ ala dị n'ime ya na-arụ ọrụ eletrik na draịva site na nhọrọ ngọngọ jumper. Ọ bụrụ na draịva Winchester nke abụọ dị na tray ahụ, a na-etinye draịva nke abụọ n'azụ azụ na tray na-enweghị SCSI bọs nchupu modul arụnyere na ya dị ka e gosiri na Figure 3-5. Bọdụ sekit WDI, nke bi na Winchester Disk Assembly, nwere SCSI bọs resistor terminators abụọ, otu setịpụrụ maka tray ọ bụla. A na-arụ ọrụ nke ihe nkwụsịtụ mgbe ewepụrụ ike na Winchester Drive Tray nke ọ bụla site na mgba ọkụ ọkụ n'ihu tray ahụ. Nhazi a na-enye ohere ka ewepụ draịva dara ada na tray ma dochie ya na-akpaghasịghị onye mmekọ ya nke etinyere na tray ọzọ, na-abanye n'otu ụgbọ ala SCSI ahụ.