Attaching the Data Cables

Use the information and instructions in this section to attach the data cables to the server.

Cable Connections and Ports

The following list describes the server’s cable connections and ports:

Minimum cable connections for the server
- At least one system on-board Ethernet network connection (NET port)
- The service processor serial management port (SER MGT port)
- The service processor network management port (NET MGT port)
- DC power cables for the system power supplies
Service processor management ports
- Serial management port
  
  The serial management port is labeled SER MGT) and uses an RJ-45 cable. This port is always available and is the default connection to the ILOM system controller.
- Network management port
  
  The network management port is labeled NET MGT and is the optional connection to the ILOM system controller. This port is not available until you have configured network settings for the system controller (through the service processor serial management port). The network management port uses an RJ‐45 cable for a 10/100BASE-T connection. This port does not support connections to Gigabit networks.
  
  The service processor network management port is configured by default to retrieve network settings with Dynamic Host Configuration Protocol (DHCP) and allow connections using Solaris Secure Shell (SSH). You might need to modify these settings for your network.
Caution - Do not attach a modem to this port.
Ethernet ports

The Ethernet ports are labeled NET0, NET1, NET2, and NET3. The transfer rates for the Ethernet ports are given in TABLE 4-1.

**TABLE 4-1 Ethernet Connection Transfer Rates**
Connection Type	IEEE Terminology	Transfer Rate
Ethernet	10BASE-T	10 Mbit/sec
Fast Ethernet	100BASE-TX	100 Mbits/sec
Gigabit Ethernet	1000BASE-T	1000 Mbit/sec

USB ports

Two Universal Serial Bus (USB) ports labeled USB 0 and USB 1 are provided on the rear panel. USB ports support hot-plugging. You can connect and disconnect USB cables and peripheral devices while the server is running, without affecting system operations.

You can only perform USB hot-plug operations while the OS is running. USB hot-plug operations are not supported when the system prompt is displayed or before the system has completed booting.

You can connect up to 126 devices to each of the two USB controllers, for a total of 252 USB devices.
Input power cables:

Do not attach power cables to the power supplies until you have finished connecting the data cables and have connected the server to a serial terminal or a terminal emulator (PC or workstation). After you attach the power cables, server goes into Standby mode and the ILOM system controller initializes. System messages might be lost if the server is not connected to a terminal, PC, or workstation.

Attach the Data Cables to the Server

Connect a Category 5 cable from the SER MGT serial management port to the terminal device.

FIGURE 4-1 Service Processor Serial Management Port

When connecting either a DB-9 or a DB-25 cable, use an adapter to perform the crossovers given for each connector.

Connect a Category 5 cable from the NET MGT network management port to your network switch or hub.

FIGURE 4-2 Service Processor Network Management Port

Connect a Category 5 cable from your network switch or hub to Ethernet Port 0 (NET0) on the rear of the chassis (FIGURE 4-3).

FIGURE 4-3   Ethernet Network Ports on Rear Panel

Figure Legend

  1   NET0 port

  2   NET1 port

  3   NET2 port

  4   NET3 port

Connect Category 5 cables from your network switch or hub to the remaining Ethernet ports (NET1, NET2, NET3), as needed.

Note - The LEDs located above each NET port are Link/Activity (left) and Speed (right) indicators for each port.

Preparing the DC Power Source

Powering on the system for the first time requires special preparation and procedures. For example, if you have not prepared a display before connecting the power cables, system messages might be lost.

Caution - Finish the hardware procedures in this chapter, but do not attach the power cables yet.

DC Power Source Requirements

TABLE 4-2 lists DC power source requirements for each power supply in the Sun Netra X4450 server, and TABLE 4-3 lists DC power source requirements for the server as a whole.

**TABLE 4-2 DC Operating Power Limits and Ranges for Each Power Supply in the Server**
Description	Limit or Range
Operating input voltage range	-48 VDC to -60 VDC nominal
Maximum operating input current	16 A
Maximum operating input power	640 W

**TABLE 4-3 DC Operating Power Limits and Ranges for the Server**
Description	Limit or Range
Operating input voltage range	-48 VDC to -60 VDC
Maximum operating input current	27 A
Maximum operating input power	1280 W

The server must meet the following:

Reliably connected to protected earth ground
Supplied by one or four power sources, isolated from each other
Capable of providing up to 640 W of continuous power per power supply

Limited to TNV-2 as defined by UL 60950 and IEC 60950

Note - The DC version of the server must be installed in a restricted-access location. According to the intent of the National Electrical Code, a restricted-access location is an area intended for qualified or trained personnel only and has access controlled by a locking mechanism, such as a key lock or an access card system.

DC Supply and Ground Conductor Requirements

The DC supply and ground conductor must meet the following requirements:

Suitable conductor material are used (use copper conductors only).
Power supply connections through the input connector are 12 AWG (between the Sun Netra X4450 server and the source).

There are three conductors:
- -48V (negative terminal)
- -48V Return (positive terminal)
- Chassis ground connection
System ground conductor is 12 AWG.

The ground can be connected through the DC power input connectors and/or directly to the grounding studs on the system chassis. If a local ground is available, only the local ground should be connected to the chassis grounding studs to prevent ground loop currents through the system chassis.
Cable insulation should be a minimum rating of 75°C (167°F), low smoke fume (LSF), and flame retardant.
Cable type should be one of the following:
- UL style 1028 or other UL 1581 (VW-1) compliant equivalent
- IEEE 383 compliant
- IEEE 1202-1991 compliant
Branch circuit cable insulation color should be applicable to National Electrical Codes.
Grounding cable insulation color should be green or yellow.

Note - Depending on the DC power source, the -48V (negative terminal) might be marked with a minus (-) symbol, and the -48V return (positive terminal) might be marked with a positive (+) symbol.

Caution - You must restrict the connection of the Sun Netra X4450 server to the DC power source to minimize the possibility that transient energy will appear on the main input to the equipment. The DC battery power source must be in the same premises as the server. The server cannot be in one building with the power source in another building.

Overcurrent Protection Requirements

Overcurrent protection must meet the following requirements:

Overcurrent protection devices must be provided as part of each equipment rack.
Circuit breakers must be located between the DC power source and the Sun Netra X4450 server. Use one 20 A double-pole, fast trip DC-rated circuit breaker for each power supply unit.

Note - Overcurrent protection devices must meet applicable national and local electrical safety codes and be approved for the intended application.

Assemble the DC Input Power Cable

Identify the parts that you will use to assemble the DC input power cable (FIGURE 4-4).

The following DC connection parts are required to assemble one or more DC power input cables. These cables connect the -48V DC input source(s) to the power supply units.
- DC input plugs
- Strain relief housings
- Cage clamp operating lever
- Tie wraps
  
  FIGURE 4-4   DC Connection Parts
  
  Figure Legend
  
    1   Strain relief housing
  
    2   DC input plug
  
    3   Cage clamp operating lever

Turn off power from the DC power source through the circuit breakers.

Caution - Do not proceed with these instructions until you have turned off the power from the DC power source through the circuit breakers.

Get a DC input plug from the ship kit.

Locate the three wires coming from the DC power source that will be used in the connection to your unit:
- -48V (negative terminal)
- Chassis ground
- -48V Return (positive terminal)
  
  Note - Depending on the DC power source, the -48V (negative terminal) might be marked with a minus (-) symbol, and the -48V Return (positive terminal) might be marked with a positive (+) symbol.

Strip 5/16 inches (8 mm) of insulation from each of the wires coming from the DC power source.

Do not strip more than 5/16 inches (8 mm) from each wire. Doing so leaves uninsulated wire exposed from the DC connector after the assembly is complete.

FIGURE 4-5 Stripping the Insulation From the Wire

Open the cage clamp for this section of the DC input plug by taking one of the following actions:
- Insert the tip of the cage clamp operating lever into the rectangular hole directly above the hole in the DC input plug where you want to insert the first wire. Press down on the cage clamp operating lever (FIGURE 4-6).
- Insert a small slotted screwdriver into the rectangular hole directly above the hole in the DC input plug where you want to insert the first wire, and press down on the screwdriver (FIGURE 4-7).
  
  FIGURE 4-6 Opening the DC Input Plug Cage Clamp Using the Cage Clamp Operating Lever
  
  FIGURE 4-7 Opening the Cage Clamp Using a Screwdriver

Feed the exposed section of the appropriate wire into the rectangular plug hole in the DC input plug.

FIGURE 4-8 shows which wires should be inserted into each hole in the DC input plug.

FIGURE 4-8   Assembling the DC Input Power Cable

Figure Legend

  1   Top of connector

  2   From -48V return

  3   From chassis ground (green/yellow)

  4   From -48V

Repeat Step 13 and Step 16 for the other two wires to complete the assembly of the DC input power cable.

Repeat Step 8 through Step 17 to create as many DC input power cables as you need for your unit.

If you need to remove a wire from the DC input plug, insert the cage clamp operating lever or a small screwdriver into the slot directly above the wire and press down (FIGURE 4-6 and FIGURE 4-7). Pull the wire from the DC input plug.

Install the Strain Relief Housings

Insert the bottom portion of the strain relief housing into the notch on the DC input plug until it snaps into place.

Ensure that the strain relief housing snaps into place on the DC input plug. You cannot complete the assembly correctly if the strain relief housing is not snapped into place.

FIGURE 4-9 Inserting the Bottom Portion of the Strain Relief Housing

Route the two or three wires coming from the DC power source through the opening at the end of the bottom portion of the strain relief housing (FIGURE 4-10).

FIGURE 4-10 Routing the Wires Out of the Strain Relief Housing

Insert a tie wrap into the bottom portion of the strain relief housing.

FIGURE 4-11 Securing the Wires to the Strain Relief Housing

Loop the tie wrap over the wires and back out of the strain relief housing, and tightening the tie wrap to secure the wires to the strain relief housing (FIGURE 4-11).

Lower the top portion of the strain relief housing so that the three prongs on the top portion insert into the openings in the DC input plug.

Push the top and bottom portions of the strain relief housing together until they snap into place (FIGURE 4-12).

FIGURE 4-12 Assembling the Strain Relief Housing

Cabling the Server