Cisco Systems VCO/4K User's Manual
Contents
1. E m Cisco YSTEMS woot Series 9 Pa Kr 7 o o o no ao AA SS o o A ol o amp 6 99 0990 6 9 f NG INSERT ONLY GARDS DESIGNATED BELOW For ona gatos 4 run Ngo Fa TONNE ESD yy ist STRAP HERE ao o o opaj o TS o o p IN a 8 LI o lO o lO o o o lo o o o o S 8 o o o lO o 6 o lo CPU CPU o o O O Oj O ofo O O 98 1912 o po o po o 018 0 8 Q O o lg Ig qi 2 o i E i Hard disk drive LEDs le ES 3 S o o 9 ni o o o bi olobo la Kada podo t lo I o o o o 7 I ro O ER mO e 5 d So 0 0 0 0 0 0 20202090202020 202090902020 96252626209020 20202020202020 2020209020202 98989909292898 00290099000929 09200009099999 989899993289898 00990099000999 99290999009999 SoBoBoBoSoBodo BoBoBoloPODOLO BaQG8G8a8q8o8o Sogologololo o BoQ5QaQq8a8o8o BaQa8a8a8o8o8o OSOBORODODOBOJ OBORODODOBOROJ OBODODOBORODO OSOBORODODODOJ ODOBODODOBOROB OBODODODOBOLO ofoloBOBOBOBOJ OFODODODOBOBOJ 8680868085868 OS080808080898 8680808580858 OBOBOBOBOBODOJ odoBoBoBodado BoBooBoDODALO BaBoBODODOBORO oloodoBododo BaQ59o2o8G8585 8508080858580 GBOLOLOLGBGB58_ GBOLORaBa8oRo8 OBODOBOBORODO OB5QOLOL08GR58 OBOBODODOBOLOJ OBODODOBOBORO 859595968686 85959696858595 DoBORODODOBODO 0858595269626 86959595968685 85959686859595 OSOBORODODOBOJ OBOBODODOBOROJ OBODODOBOROLO olOBOROLODODOJ ABOBODODODOBOB OBODODOOROLO obooBoDoDoLO2. Caution In a nonredundant system power down the system before removing the card Step1 Remove the Combined Controller that is connected to the Storage Control I O Module to be serviced Refer to the Cisco VCO 4K Card Technical Descriptions for information on how to remove the Combined Controller Step2 Use a 1 8 inch bladed screwdriver to loosen the captive mounting screws at the top and bottom of card Do not remove the screws from the cards Step3 Grasp the screws at the top and bottom of the card and pull the card away from the midplane The card fits tightly into the midplane connectors and some force is required to pull it away from the midplane However do not exert excessive force on the card to remove it Step4 When the card is free of the connector grasp the sides of the front panel and pull the card free of the card slot Step5 Grasp the card on its bottom edge as it is removed from the card rack Step6 When you have removed the card from the slot place it on an antistatic mat or in an antistatic envelope Ss Note Do not replace the Combined Controller until the Storage Control I O Module is replaced If the Storage Control I O Module is not replaced at the time of removal do not replace the Combined Controller To remove and replace a Storage Control I O Module card in a redundant system Step1 If servicing an active Storage Control I O Module switch the active side to standby Refer to the maintenance chapter
3. Oldo oo o oo s 2 a S 2 O Y koj e 2 e 7 gt ZN CI C O 00000000000 00000000000 000000000000 000000000000 25 o de 000000000000 e 000000000000 000000000000 000000000000 qe qe Os 7 2 2 O 35 E S Power is supplied to the Storage Control I O Module via the midplane from the Combined Controller card The hard drive LED signal is brought to the system controller board via the midplane and brought out to the front panel to show hard drive activity It is located on the Combined Controller in the front of the VCO see Figure 4 3 50165 SCSI terminations are provided as an option to be populated on the Storage Control I O Module depending on the system configuration They are currently not being used Cisco VCO 4K Mechanical Assemblies Cass Chapter4 Storage Control I O Module M Description The connectors mounted on the front pane are 4 serial ports DB 25 SCSI port 50 pin mini SCSI connector Ethernet DB 15 Printer 36 pin Centronics The connectors mounted on the board are SCSI DIN 64 MODEM 20 pin IDC connector MODEM power 5 pin header The LEDs mounted on the board are ENET If illuminated shows that power is available to the Ethernet SCSI If illuminated shows that there is SCSI termination power Hard Disk Drive The hard disk drive is a SCSI compatible
4. For Serial Ports 1 and 2 these jumper settings assume that straight through EIA DCE to DTE cables are used to connect the system to the master console and remote maintenance modem If the jumpers are moved to position JP11 for the master console and JP16 for the remote modem crossover cables can be used Note Straight through cables directly link the connector pinouts from end to end In crossover cables Pins 2 and 3 are crosswired Pin 2 at one end is wired to Pin 3 at the opposite end and vice versa Jumper settings for Serial Ports 3 and 4 SIO host links are determined by two factors the type of cable employed straight through or crossover and the host termination at the end of the cable terminal or modem The default jumper settings for Serial Ports 3 and 4 configure the CPU as a DTE termination This configuration supports the following arrangements Straight through cables connecting the system to a modem DTE to DCE Crossover null modem cables connecting the system to a terminal DTE to DTE 78 10334 03 Cisco VCO 4K Mechanical Assemblies E Chapter4 Storage Control I O Module M Hardware Configuration You can position the jumpers in locations JP13 and JP18 under the To Terminal etching to configure the CPU as a DCE termination Moving the jumpers to these locations supports the following SIO connections Straight through cables connecting the system to a host terminal DCE
5. terminations for connection to a terminal or configured as terminal DTE terminations for connection to a modem Refer to the Serial Ports 1 Through 4 and Jumper Settings section on page 4 11 for more information on jumper configurations Data communication parameters for each host link must be defined in the system database using the Host Configuration screen following system power on Refer to the Cisco VCO 4K System Administrator s Guide for instructions on defining host links Table 4 2 Serial Ports 3 and 4 Pin and Signal Assignments Pin Signal Name Description Direction 2 TxD Transmit Data terminal to modem 3 RxD Receive Data modem to terminal 4 RTS Request to Send terminal to modem 3 CTS Clear to Send modem to terminal 6 DSR Data Set Ready modem to terminal 7 GND Chassis Ground 8 DCD Data Carrier Detect modem to terminal 15 RTxC Tx Clock to output data terminal to modem 17 RRxC Rx Clock to input data terminal to modem 20 DTR Data Terminal Ready terminal to modem 24 TTxC Tx Clock to output data terminal to modem 1 All pins not identified are no connection Ethernet Interface The CPU employs a Local Area Network Controller for Ethernet LANCE to implement an Ethernet transceiver interface The balanced transceiver signal lines from the CPU are coupled to an onboard transformer to signal lines that go through the SWI Outer B P and control midplane cards an
6. 00000000000000000 00000000000000000 00000000000000000 S srICTAL VO S sosi TRIM ORR PWR Oner vu PORT 7 2 PORT 8 PORTE ala A PORTA SISSI SISSI SISS SSi SSS S lloj a uun a uu au 44 01 uuu 44 40 01 44 1 a uuu a u un a uu 40 1 nuu ISI SISISIS SISISISISIS S SIS S E E SS SS RO E gago 808980980 8080898989808080898o8080808089 E 98080008090009000800080900080008000008000800 78 10334 03 SMZ1SAS 09819 PEM REMOTE ALARMS REMOTE SWITCH AB Figure 4 11 Storage Control I O Module L M Removal and Replacement Information Fan Unit Slot 21 Alarm Connector A B Switch Connector Power Switch Cisco VCO 4K Mechanical Assemblies Chapter 4 Storage Control I O Module Removal and Replacement Information Mi Removal Procedures A Caution A Follow ESD rules when removing a system component Use a wrist strap for grounding To remove a Storage Control I O Module in a nonredundant system do the following
7. drive that is used as the system controller s main data storage facility The hard disk drive reguires 5 volts and 12 volts DC to operate The hard disk drive is shown in Figure 4 2 The Storage Control I O Module supports the hard disk drive LED The LED is located on the Combined Controller and is visible from the front of the system see Figure 4 3 Cisco VC0 4K Mechanical Assemblies 78 10334 03 Chapter4 Storage Control I O Module Description Mi Figure42 Location of the Hard Disk Drive on the Storage Control I O Module El Cisco VCO 4K Mechanical Assemblies 78 10334 03 ELSE Chapter4 Storage Control I O Module M Description Figure 4 3 Location of Hard Disk Drive LED on the Combined Controller
8. shown in Figure 4 9 Cisco VC0 4K Mechanical Assemblies 112 B 78 10334 03 Chapter4 Storage Control 1 0 Module Removal and Replacement Information Mi Figure 4 9 Jumper Configuration for DCE DTE Serial Ports 1 4 TET Serial port 4 can be configured to use clock signals by the TRXC4 and RTXC4 signal lines Jumper JP15 configurations of the clock lines are shown in Figure 4 10 The module is shipped without clock lines connected pins 50173 pins Figure 4 10 J umper 15 Configuration of Clock Lines Serial Port 4 JP15 1 connects TRXC4 to Port 4 Pin a Mi connects RTXC4 to Port 4 Pin 24 connects TRXC4 to Port 4 Pin 17 connects RTXC4 to Port 4 Pin 17 A connects TRXC4 to Port 4 Pin 24 i 3 connects RTXC4 to Port 4 Pin 15 3 Removal and Replacement Information Figure 4 11 shows the location of the Storage Control I O Module cards in the rear of the VCO system The card is located in slots 3 to 4 in nonredundant systems and in slots 3 to 4 and 5 to 6 in redundant systems The label at the base of the card cage identifies where the card s is located There is a soft start circuit on the card which allows for the Storage Control 1 O Module to be removed and replaced while the system is running This should only be done when the system contains redundant Storage Control I O Modules and when the module to be removed is in standby mode Cisco VCO 4K Mechanical Assemblies Cas EEE Storage Control I O Modul
9. to DTE Crossover null modem cables connecting the system to a modem DCE to DCE Refer to the Cisco VCO 4K Hardware Installation Guide for more information on serial cable requirements 2 Note When modifying jumper positions on Storage Control I O Module boards you must move all seven jumpers to the new location to ensure operation Serial Ports 1 Through 4 Serial ports 1 through 4 can be configured as a modem DCE for connection to a terminal or terminal DTE for connection to a modem The Storage Control I O Module card s serial ports are configured for shipment in the DCE configuration Table 4 4 illustrates jumper positions for DCE and DTE Table 4 4 Jumper Positions for DCE and DTE Modem Connections Port DTE Operation DCE Operation 1 Jumper TO MODEM JP11 Jumper JP1 TO TERMINAL 2 Jumper TO MODEM JPI7 Jumper JP16 TO TERMINAL 3 Jumper TO MODEM JPI4 Jumper JP13 TO TERMINAL 4 Jumper TO MODEM JP19 Jumper JP18 TO TERMINAL Refer to Figure 4 8 for the jumper locations on the Storage Control I O Module card Figure 4 8 Jumper Locations on the Storage Control I O Module Card TO MODEM TO MODEM TO MODEM TO MODEM SERTISE Hard disk drive TOTERMINAL TOTERMINAL TOTERMINAL TO TERMINAL JP15 J21 PUGUUP J20 50172 Seven jumpers are installed at jumper locations JP1 JP11 JP13 JP14 JP16 JP17 JP18 and JP19 connecting pins 1 2 3 4 5 6 7 8 9 10 11 12 13 14 as
10. BoPooDODOLORO HOBOODOBOBOBO ABSBSLOLO8G8G SoPoBoDODODOLO 90202000202090 OS030808080808 OBODODODOBOBOJ 808080858680 OROBOBOBODOJ OFOBOBOBORODOJ OSOBODOBOLONO oloBoBodododo MadoBoBoDoDALO 8508685859520 okododoBodo 9526858525852 8586858595208 O G8d8o808o85858 OBOBODODOBOBOJ sgo8o8a858o808 OBS8OLOL08GR858 GBooLokakq8o8 s8o8o8a8a858o8 a GBOLOLOVGBGQ58B_ GBOLOSGVG5Q52B_ OPODODOBORODO ODODOBOBOBOJ OBODODOBOBODOJ 6268585962080 olodoBoDoDoDO SoBoBoDODODORO BOBOODODOBOBO OBSBS8OLOL086 80202090209090 09090200090 OBOBOBODOBOBOJ OBOBONOBOBOBOJ OBODOOBOBOBOJ OSOBOBOVOBOBOJ OBOBODOBOBOLOJ OBODOOBOBOBOJ OS08080L080808 oBOODODOBOROS OBODODOBORODOJ OSOBOBODODOBOJ OBOBODODOBOOJ OBOODOBORBODO 85868625959686 96859595968686 90902020009090 5858595959686 85959596968685 90909090909090 ODPEDPEPEPELGOGO 09090000996 600000060000060 09900090909090 DOEPEOGPGOGOGO 60000000006060 o T Es IIL A wo Midplane Connectors The Storage Control I O Module plugs into the midplane through standard DIN 41612 triple row 96 pin male connectors Figure 4 4 shows the control midplane connectors Cisco VCO 4K Mechanical Assemblies 78 10334 03 Chapter4 Storage Control 1 0 Module Description Mi Figure44 Control Midplane A side connector for the Storage Control I O module B side connector for the Storage Control I O module 50168 Serial Ports 1 and 2 Serial Port 1 Console and Serial Port 2 TTY01 are dedicated ports fo
11. CHAPTER Storage Control I O Module The Storage Control I O Module performs two functions to connect outside interfaces to the system controller and to house the hard disk drive It plugs into the back of the VCO 4K system and provides the I O interfaces for system peripheral devices and host communication links using four serial ports one Ethernet port one printer port and one SCSI connector Figure 4 1 shows the front panel of the Storage Control I O Module Physical interfaces to host computers and peripheral devices are provided on the front panel of the Storage Control I O Module Two serial ports are available for SIO host links and another two are dedicated to supporting the local system administration console and a remote maintenance modem An Ethernet Transceiver interface and parallel printer connector are also located on the Storage Control I O Module Specifications Part Number Contact your Cisco Systems sales representative Interfaces Four EIA TIA 232 serial ports master console remote maintenance modem and two SIO host links One Ethernet transceiver interface One Centronics type parallel interface system printer One SCSI connector reserved for future use Power Requirements Maximum Typical Hard Disk Drive 5 VDC 0 4A 0 33A 12 VDC 1 0A 0 17A Ethernet 5 VDC 0 5A 0 5A 12 VDC OA OA EIA TIA 232 5 VDC OA OA 12 VDC 0 1A 0 05A 78 10334 03 Cisco VCO 4K Mechanical Assemblies El Chapter4 Storage Cont
12. R LED is not illuminated and Ethernet is being used contact Cisco Systems Technical Support Troubleshooting Reference Materials For detailed information covering all troubleshooting areas refer to the Cisco VCO 4K Troubleshooting Manual The Cisco VCO 4K System Maintenance Manual describes corrective maintenance procedures for host communications links In addition to this manual refer to the Cisco VCO 4K Ethernet Guide and the Cisco VCO 4K Standard Programming Reference and Cisco VCO 4K Extended Programming Reference for details relating to communication protocols and command report formats Cisco VCO 4K System Messages describes the network messages associated with problems detected with the host communications links Additional reference materials include the OEM manuals provided with any other peripheral devices connected to the Storage Control I O Module This includes the printer and the serial terminal Cisco VCO 4K Mechanical Assemblies anses ESA Chapter4 Storage Control I O Module E Troubleshooting Cisco VCO 4K Mechanical Assemblies 418 E 78 10334 03
13. by the sides of the front panel and align it with the top and bottom card guides Push the card inward until it makes contact with the midplane Firmly push the card toward the midplane The card fits tightly into the midplane connectors and some force is required to seat the card back firmly into the midplane connectors Use a 1 8 inch bladed screwdriver to tighten the mounting screws at the top and bottom of each card into the tapped holes on the mounting rail Plug the Combined Controller into the backplane If installing in a nonredundant system make sure the system is powered on If the hard disk drive does not contain the Generic software install the software Refer to the system release notes for instructions on installing the Generic software backing up and restoring the database and licensing Troubleshooting S Note More extensive troubleshooting information is contained in the Cisco VCO 4K Troubleshooting Guide LEDs Not Illuminated If either of the LEDs on the Storage Control I O Module is not illuminated corrective action should be taken These LEDs are fused powered sources The fuses are on the Combined Controller and are not field replaceable Call Cisco Systems for technical support Cisco VCO 4K Mechanical Assemblies a 78 10334 03 Chapter4 Storage Control 1 0 Module Troubleshooting Mi Ni Note The ENET PWR LED should be illuminated only when Ethernet is being used If the ENET PW
14. d terminate on the industry standard DB 15 connector on the Storage Control I O Module faceplate Pin and signal assignments for this DB 15 port are listed in Table 4 3 Cisco VCO 4K Mechanical Assemblies notas Chapter4 Storage Control I O Module M Description Table 4 3 Ethemet Port Pin and Signal Assignments Pin Signal Signal Name 2 C Collision Input 3 T Transmit Output 5 R Receive Input 6 GND Ground 9 C Collision Input 10 T Transmit Output 12 R Receive Input To implement Ethernet links you must purchase the optional Ethernet Communications Package available from Cisco Systems This package contains supporting software and the Cisco VCO 4K Ethernet Guide which covers the cabling requirements and implementation strategies You must provide cables transceivers and other components to establish Ethernet links Printer Interface The printer interface on the Storage Control I O Module front panel supports parallel system printers through a 36 pin Centronics type connector Figure 4 7 shows the cable wiring diagrams for connecting the Storage Control I O Module parallel port to the system printer Note The End of Line EOL terminator for the system printer must be defined in the system database via the Peripheral Configuration screen prior to use refer to the Cisco VCO 4K System Administrator s Guide for more information Figure 4 7 I O Module
15. e Chapter 4 Slot 1 Storage Control I O Modules on 0000000000000000000 98989898980698960606 OQODODODODODODODODODO 00900000000000000000 900090009000006909000 90069000000000009006 OODODODODODODODODODO 00009000060600000000 90000000000000000000 OODODODODODODODODODO OODOQODODODODODODODO OODOVOVOVOVODODODODO OOOOLOLOLOLOLOLOLOO 98989699990606000606 90069000060006000006 9000000000600606000690 20000000000000000000 900090009000006909000 00006000000000000 09000000000000600 ODODONODODODODODO 00006000000000000 90000000000000606 90600000096000006 200000000000000000 0 00000000000600000000 900090009000006909000 90000000600900600906906 90000000006060600606906 299629990969096909090 900090009000006909000 QODODODODODODODODODO FaN a 90909000090000000000 So Ss S asso ss so seas 90060000000006000000 20000000000000000000 909909000000000900000 OODODOMODODODODODODO OODODODODODODODODODO 000009000000000000000 900090009000006909000 90060000000000009006 9000000000060600600690 000009000060600000000 90000000000000000000 900000000060606000690 9000000000900069000090 900090000000006909000 90069000060000009006 QODODODODODODODODODO 00009000060600000000 99909000000000000000 89209080909080809080 oQogoloDODODODODODO O Z1 NBC CLK NBC CLK vo SISIS SISTIS ST GTRL 10 TRIM PWR on scsi Oeser
16. in the Cisco VCO 4K System Administrator s Guide for information about how to switch the active side to standby Step2 When the transition to standby is complete remove and replace the Storage Control I O Module If you are permanently removing the Storage Control 1 O Module from a nonredundant system back up the database before powering down the system and removing the module Refer to the Cisco VCO 4K System Administrator s Guide for information on backing up the database Cisco VCO 4K Mechanical Assemblies 78 10334 03 EE Chapter4 Storage Control I O Module E Troubleshooting Replacement Procedures A Caution Step 1 Step 2 Step3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Follow ESD rules when removing a system component Use a wrist strap for grounding To replace the Storage Control I O Module Place the replacement Storage Control I O Module on the antistatic mat or envelope Verify that the Combined Controller that is to be connected to the Storage Control I O Module is not plugged into the backplane Verify that all the jumpers on the replacement card correspond with those on the removed Storage Control I O Module Verify that the jumper configuration is appropriate for the system configuration Refer to the Serial Ports 1 Through 4 and Jumper Settings section on page 4 11 for details on jumper settings for the Storage Control I O Module Grasp the replacement card
17. m Serial Port 1 Console VT220 320 Console DB 25P DB 25S Male 3 Conductor Straight Thru Female Pin 2 KA aa Pin 2 RxD Pin 3 Ds gt Pin 3 GND Pin 7 Pin 7 50169 3 0 You can use a 25 conductor straight through cable to connect a master console to the Storage Control I O Module However only the conductors shown in Figure 4 5 are used Figure 4 6 I O Module to Remote Maintenance Modem Cable Wiring Diagram Remote Maintenance Serial Port 2 TTY01 Modem DB 25P DB 25P Male 7 conductor Straight thru Male 50170 N Note You must use a 9 pin connector available from Cisco Systems A 25 pin connector can be used after the switch box Cisco VCO 4K Mechanical Assemblies 48 B 78 10334 03 Chapter4 Storage Control 1 0 Module Description Mi Serial Ports 3 and 4 Serial Ports 3 and 4 are available for Serial I O SIO links between the system and a host computer These standard female DB 25 ports carry Asynchronous Data Link Control ADLC protocol signals between the host and the system over EIA TIA 232 cables Pin and signal assignments for port 3 is the same as Serial Ports 1 and 2 Refer to Table 4 2 for port 4 pin and signal assignments Wiring conventions for physically connecting a host computer to a SIO port are provided in the Cisco VCO 4K Hardware Installation Guide Jumpers on the Storage Control I O Module allow Serial Ports 3 and 4 to be configured as modem DCE
18. r connecting the system master console and remote maintenance modem respectively These standard female DB 25 ports connect to the console and modem via EIA TIA 232 cables Table 4 1 shows the pin and signal assignments for these ports For additional information on connecting peripheral equipment refer to the Cisco VCO 4K Hardware Installation Guide Table 4 1 Serial Ports 1 and 2 Pin and Signal Assignments Pin Signal Name Description Direction 2 TxD Transmit Data terminal to modem 3 RxD Receive Data modem to terminal 4 RTS Request to Send terminal to modem 5 CTS Clear to Send modem to terminal 6 DSR Data Set Ready modem to terminal 7 GND Chassis Ground 8 DCD Data Carrier Detect modem to terminal 20 DTR Data Terminal Ready terminal to modem 1 All pins not identified are no connection Cisco VCO 4K Mechanical Assemblies 78 10334 03 EE Chapter4 Storage Control I O Module M Description Master console and remote maintenance modem operating parameters Baud Rate Stop Bits Bits per Character and Parity are defined in the system database via the Peripheral Configuration screen Wiring for serial port connection to the Master Console is shown in Figure 4 5 Wiring for the remote maintenance modem connection is shown in Figure 4 6 Refer to the Cisco VCO 4K System Administrator s Guide for more information Figure 4 5 I O Module to Master Console Cable Wiring Diagra
19. rol I O Module M Description Total Current Total Power Operating Temperature Relative Humidity Physical Dimensions Description 5 VDC 0 9A 0 85A 12 VDC LIA 22A 5 VDC 7 7 Watts 12 VDC 6 89 Watts 10 to 409C 50 to 104 F 20 to 80 noncondensing Height 14 4 inch 36 6 cm Depth 5 6 inch 14 2 cm Width 1 6 inch 4 1 cm The Storage I O Module is two card slots wide and slides into the back of the VCO system where it plugs into the control midplane All outside connections are mounted on the faceplate of the module All internal connectors are mounted on the board itself for easy access to system internals for example SCSI and Ethernet The VCO 4K system hard drive is mounted on the upper portion of the I O Module The board is built to accommodate a 3 5 inch hard drive Physical mounting points are provided for the hard drive as well as a 50 pin SCSI interface to the system controller There is also a provision for an external SCSI connection on the front panel The SCSI connection is reserved for future use Front Panel Indicators and Ports Assignments Figure 4 1 shows the front panel of the Storage Control I O Module E Cisco VCO 4K Mechanical Assemblies 78 10334 03 Chapter4 Storage Control 1 0 Module Description Mi Figure4 1 Storage Control I O Module Front Panel S ST CTRL VO SCSI TRM PWR o ENET PWR gt E hs Zo 2 Re
20. to System Printer Cable Wiring Diagram Printer Parallel Printer 36 pin Centronics 36 pin Male 29 conductor Straight thru Male GND 50171 Cisco VCO 4K Mechanical Assemblies 410 78 10334 03 Chapter 4 Storage Control I O Module Hardware Configuration Mi Note You can use a 36 conductor straight through parallel cable to connect a printer to the system controller However only the conductors shown in Figure 4 7are used For more information on the parallel 36 pin Centronics cable available from Cisco Systems refer to the Cisco VCO 4K Hardware Planning Guide SCSI Interface The SCSI mass storage bus interface on the Storage Control I O Module is not used in system operation Hardware Configuration This section outlines hardware configuration options SCSI Termination Configuration The SCSI Interface connector is reserved for future use Serial Port Configuration Serial Ports 1 Through 4 and J umper Settings Serial ports 1 through 4 on the Storage Control I O Module can be configured as modem DCE terminations for connection to a terminal or configured as terminal DTE terminations for connection to a modem Refer to the Serial Ports 1 Through 4 section on page 4 12 for more information Jumpers are positioned in J1 for Serial Port 1 master console JP17 for Serial Port 2 remote maintenance modem and JP13 and JP18 for Serial Ports 3 and 4 SIO host links respectively
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