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Product Information

Document ID: MCGN-45WLLV

Netfinity 5500 M20 - External options, connecting external SCSI devices and Input/Output ports and connectors

Applicable to: World-Wide

External Options

Note

  • Read "Safety Information".
  • Read the documentation that comes with the options.


Connecting External SCSI Devices: You can attach a SCSI storage expansion enclosure to your server.

Cabling Requirements: The ServeRAID controller in the server has one channel that can be used to attach external devices. This channel is connected to the SCSI connector on the back of the server. To select and order the correct cables for use with external devices, contact your IBM reseller or IBM marketing representative.

Refer to "ServeRAID system board controller" to determine the number of internal and external connectors, channels, and SCSI devices that the controller supports.

For information about the maximum length of SCSI cable between the terminated ends of the cable, see ANSI SCSI Standards:



Adhering to these standards ensures that the server operates properly.

Setting SCSI IDs for external devices: Each SCSI device that is connected to a SCSI controller must have a unique SCSI ID, so that the SCSI controller can identify the devices and ensure that different devices do not attempt to transfer data at the same time. SCSI devices that are connected to different SCSI controllers can have duplicate SCSI IDs. See "SCSI IDs" and refer to the instructions that come with the SCSI devices for more information about setting a SCSI ID.

Installation Procedure: To attach an external device:
1. Turn off the server and all attached devices.
2. Follow the instructions that come with the option to prepare it for installation and to connect it to the server.

Input/Output Ports and Connectors: The input/output (I/O) connectors are for attaching external devices, such as printers, keyboards, and displays, to your server. The I/O connectors on your server include:



See the illustration in "Input/Output connectors and expansion slots" for the locations of the connectors.

Serial Ports: The server comes with two serial ports. (See "Input/output connectors and expansion slots" for the locations of the connectors.) These ports are used to communicate with printers, plotters, external modems, scanners, and auxiliary terminals. These ports also enable you to transfer data between computers.

Serial ports can transfer data asynchronously, which means that they can transmit any number of characters at any time, with no restriction on the duration of the pauses between characters.

The serial ports can transmit and receive data and commands at rates of from 300 bits per second up to 115 000 bits per second.

Serial port A is shared by the operating system and the integrated Netfinity Advanced System Management Processor. Serial port B can be used only by the
operating system.

Each serial port has a 9-pin, male D-shell connector on the back of the server. The pin-number assignments of this connector conform to the industry standard.

The following table shows the pin-number assignments for the serial-port connectors.

Table 3. Serial Port Pin-Number Assignments

Pin

Signal

Pin

Signal

1

Data carrier detect

6

Data set ready

2

Receive data

7

Request to send

3

Transmit data

8

Clear to send

4

Data terminal ready

9

Ring indicator

5

Signal ground

When you turn on your server, the POST routine assigns the serial ports to specific communication port addresses.

Some application programs use only certain ports, and some modems are designed for use only at certain communication port addresses. You might need to use the Configuration/Setup Utility program to change communication port address assignments to resolve conflicts.

Management Port C: The server has a dedicated system-management I/O port. This port can be used to attach a modem that is dedicated to communication with the Netfinity Advanced System Management Processor.

The connector on the back of the server and the pin-number assignments are the same as for the serial ports.

Parallel Port: The parallel port usually is used to communicate with printers, and transfers data one byte at a time. The parallel port has a 25-pin, female D-shell connector on the back of the server. It support three standard IEEE 1284 modes of operation: Standard Parallel Port (SPP), Enhanced Parallel Port (EPP), and Extended Capability Port (ECP). (See "Input/output connectors and expansion slots" for the location of the connector.)

The following table shows the pin-number assignments for the parallel-port connector.

Table 4. Parallel port pin-number assignments

Pin

I/O

SPP/ECP Signal

EPP Signal

1

O

-STROBE

-WRITE

2

I/O

Data 0

Data 0

3

I/O

Data 1

Data 1

4

I/O

Data 2

Data 2

5

I/O

Data 3

Data 3

6

I/O

Data 4

Data 4

7

I/O

Data 5

Data 5

8

I/O

Data 6

Data 6

9

I/O

Data 7

Data 7

10

I

-ACK

-ACK

11

I

BUSY

-WAIT

12

I

PE (paper end)

PE (paper end)

13

I

SLCT (select)

SLCT (select)

14

O

-AUTO FD (feed)

-DSTRB

15

I

-ERROR

-ERROR

16

O

-INIT

-INIT

17

O

-SLCT IN

-ASTRB

18

-

Ground

Ground

19

-

Ground

Ground

20

-

Ground

Ground

21

-

Ground

Ground

22

-

Ground

Ground

23

-

Ground

Ground

24

-

Ground

Ground

25

-

Ground

Ground


When you turn on your server, the POST routine assigns the parallel port a specific port address. You can change the parallel-port assignment by using the Configuration/Setup Utility program.

Video Port: The system board in your server has one SVGA video port. This port is used to attach a video monitor. The video port has a 15-pin analog connector on the back of the server. (See "Input/output connectors and expansion slots" for the location of the connector.)

The following table shows the pin-number assignments for the video connector.

Table 5. Video port pin-number assignments

Pin

Signal

1

Red

2

Green or monochrome

3

Blue

4

Monitor ID bit 2

5

Ground

6

Ground

7

Ground

8

Ground

9

+5 V dc

10

Ground

11

Monitor ID bit 0

12

DDC SDA

13

Horizontal synchronization (Hsync)

14

Vertical synchronization (Vsync)

15

DDC SDL


Keyboard and auxiliary-device ports: The system board has one keyboard port and one auxiliary-device port that supports a mouse or other pointing device. (See "Input/output connectors and expansion slots" for the locations of the connectors.)

The following table shows the pin-number assignments for the connectors used by the keyboard and auxiliary-device ports.

Table 6. Keyboard and auxiliary-device port pin-number assignments

Pin

Signal

1

Data

2

Not connected

3

Ground

4

+5 V dc

5

Clock

6

Not connected


SCSI port: Your server comes with a RAID controller on the system board, which provides two independent SCSI channels. A 16-bit (wide) SCSI cable connects the hot-swap backplane to one channel of the integrated RAID SCSI controller. Another SCSI cable connects the other channel of the controller to the SCSI connector on the rear of the server.

To attach an external SCSI device to your server, connect an external SCSI cable from the SCSI device to the SCSI connector on the back of the server. Ensure that the last device on the external SCSI cable is terminated. Table 7 shows the pin-number assignments for the 68-pin SCSI connectors.

Table 7. 68-pin SCSI port connector pin-number assignments

Pin

Signal

Pin

Signal

1

Ground

35

Data 12

2

Ground

36

Data 13

3

Ground

37

Data 14

4

Ground

38

Data 15

5

Ground

39

Data P1

6

Ground

40

Data 0

7

Ground

41

Data 1

8

Ground

42

Data 2

9

Ground

43

Data 3

10

Ground

44

Data 4

11

Ground

45

Data 5

12

Ground

46

Data 6

13

Ground

47

Data 7

14

Ground

48

Data P0

15

Ground

49

Reserved

16

Ground

50

-PRSN

17

Terminal power

51

Terminal power

18

Terminal power

52

Terminal power

19

Reserved

53

Reserved

20

Ground

54

Ground

21

Ground

55

-Attention

22

Ground

56

Ground

23

Ground

57

-Busy

24

Ground

58

-Acknowledge

25

Not connected

59

-Reset

26

Ground

60

-Message

27

Ground

61

-Select

28

Ground

62

-Control/Data

29

Ground

63

-Request

30

Ground

64

-Input/Output

31

Ground

65

Data 8

32

Ground

66

Data 9

33

Ground

67

Data 10

34

Ground

68

Data 11


Ethernet Port: The system board in your Netfinity 5500-M10 contains an Ethernet controller. The controller has an external RJ-45 connector on the rear of the server that is used with a category 3, 4, or 5 unshielded twisted-pair (UTP) cable. The connector enables an Ethernet network to attach to the internal transceiver in your server.

Note
The 100BASE-TX Fast Ethernet standard requires that the cabling in the network be Category 5 or higher.



See "Configuring the Ethernet controller" for additional information about the Ethernet controller.

Table 8 shows the pin-number assignments for the RJ-45 connector. These assignments apply to both 10BASE-T and 100BASE-TX devices.

Table 8. Ethernet connector pin-number assignments

Pin

Signal

Pin

Signal

1

Transmit data+

5

Reserved

2

Transmit data-

6

Receive data-

3

Receive data+

7

Reserved

4

Reserved

8

Reserved


Universal serial bus ports: The system board in the Netfinity 5500 M20 contains two universal serial bus (USB) ports. Each USB port has an external connector on the rear on the server for attaching devices that previously used serial, parallel, keyboard, mouse, and game ports.

USB is an emerging serial interface standard for telephony and multimedia devices. USB technology uses Plug and Play to determine what device is attached to the connector. Each USB device is accessed by a unique USB address. A device called a hub is used to convert the USB port into multiple attachment points. A hub has multiple ports where peripherals can be attached. USB provides 12 megabits-per-second (Mbps) bandwidth with a maximum of 63 peripherals and a maximum signal distance of five meters (16 ft.) per segment.

Note
If more than one USB device is to be attached, then the device must be connected to a hub.

Table 9 shows the pin-number assignments for the USB connectors.

Table 9. USB connector pin-number assignments

Pin

Signal

1

VCC

2

-Data

3

+Data

4

Ground


RS-485 port: The system board has an RS-485 port that can be used by the Advanced System Management Processors of several servers mounted in a rack enclosure to communicate with each other in half-duplex mode.

Table 10 shows the pin-number assignments for the RS-485 connector.

Table 10. RS-485 port pin-number assignments

Pin

Signal

1

+5 V dc

2

+Data (tied to pin 4)

3

-Data (tied to pin 5)

4

+Data (tied to pin 2)

5

-Data (tied to pin 3)

6

Ground

Search Keywords

Document Category

Diagrams

Date Created

12-03-99

Last Updated

21-05-99

Revision Date

16-03-2000

Brand

IBM PC Server

Product Family

Netfinity 5500 M20

Machine Type

8662

Model

ALL

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