Cabling the Server

C H A P T E R 5

Cabling the Server

This chapter provides instructions for cabling the server. Topics include:

Cable Connections and Ports

Connecting the Server Cables

DC Operation Conditions and Procedures

Managing Cables With the CMA

Note - References to left and right are from your viewpoint as you face either the front or rear of the equipment.

Cable Connections and Ports

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

Minimum cable connections for the servers:

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)

AC or DC power cables for the two system power supplies

Service processor management ports: There are two management ports for use with the ILOM system controller.

The service processor serial management port (labeled SER MGT) uses an RJ-45 cable and is always available. This port is the default connection to the ILOM system controller.

Note - The serial management (SER MGT) port connection must be made using a shielded twisted-pair (STP) cable in order to comply with NEBS Lightning requirements.

The service processor network management port (labeled NET MGT) 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). See Connecting to the ILOM Service Processor for the First Time. The service processor network management port uses an RJ-45 cable for a 10/100BASE-T connection. This port does not support connections to Gigabit networks.

Ethernet ports: Labeled NET0, NET1, NET2, and NET3. The Ethernet interfaces operate at 10 Mbps, 100 Mbps, and 1000 Mbps. The transfer rates for the Ethernet ports are given in TABLE 5-1.

TABLE 5-1 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

VGA (video) port: Use a 9-pin video cable to connect to a VGA video device.

You can use ILOM to redirect the system console to this port.

USB ports: Two Universal Serial Bus (USB) ports labeled USB0 and USB1 are provided on the rear panel (FIGURE 5-1). 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 connect up to 126 devices to each of the two USB controllers, for a total of 252 USB devices per server.

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). The server goes into Standby mode and the ILOM system controller initializes as soon as the input power cables are connected to the power source. System messages might be lost if the server is not connected to a terminal, PC, or workstation at this time.

Connector Locations

FIGURE 5-1 shows the connectors on the rear panel of the Sun Netra X4250 server.

FIGURE 5-1 Rear Panel Connectors on the Sun Netra X4250 Server

Figure showing the rear panel LEDs and cable connectors.

Figure Legend
1	Power Supply 0 Input Power
2	Power Supply 1Input Power
3	Service processor serial management port (SER MGT)
4	Service processor network management port (NET MGT)
5	Ethernet ports (NET0, NET1, NET2, NET3)
6	Alarm port
7	USB ports (USB0, USB1)
8	VGA (video) port

Status Indicator Locations

FIGURE 5-2 shows the status indicators on the front panel of the Sun Netra X4250 server.

FIGURE 5-2 Location of the Bezel Server Status and Alarm Status Indicators

Figure showing the location of the server and alarm status indicators on the front bezel.

Figure Legend
1	User (amber) alarm status indicator	5	Locator LED
2	Minor (amber) alarm status indicator	6	Fault LED
3	Major (red) alarm status indicator	7	Activity LED
4	Critical (red) alarm status indicator	8	Power LED

TABLE 5-2 Bezel Server Status Indicators
Indicator	LED Color	LED State	Component Status
Locator	White	On	Server is identified with the superuser `locator` or ILOM `setlocator` command.
		Off	Normal state
Fault	Amber	On	The server has detected a problem and requires the attention of service personnel.
		Off	The server has no detected faults.
Activity	Green	On	The server is powered up and running the Solaris Operating System.
		Off	Either power is not present or the Solaris software is not running.

Connecting the Server Cables

To boot the server, you must connect and configure the network and serial ports. The procedures are given in the following sections.

To Connect the Service Processor Serial Management Port

To Connect the Service Processor Network Management Port

To Connect the Ethernet Network Cables

To Connect AC Power Cables to the Server

The server also has serial and USB ports available for connections to optional devices (see Cable Connections and Ports).

Note - When you are finished connecting the cables to the server, ensure that the server can slide smoothly in and out of the rack without binding or damaging the cables. See the section, To Verify the Operation of the Slide Rails and the CMA.

To Connect the Service Processor Serial Management Port

The service processor serial management port is marked SER MGT (FIGURE 5-3). This port is the leftmost RJ-45 port on the rear panel.

Note - The serial management (SER MGT) port connection must be made using a shielded twisted-pair (STP) cable in order to comply with NEBS Lightning requirements.

Note - The cable and DB-9 RJ-45 adapters are for the host serial port, and not for the server SER MGT port.

Use this port for server management. This port is needed to set up the service processor network management port, as detailed in Connecting to the ILOM Service Processor for the First Time.

FIGURE 5-3 Service Processor Serial Management Port - Rear Panel

Figure showing the serial management port.

Note - Use the service processor serial management port only for server management. This port is the default connection between the service processor and a terminal or a computer.

Caution - Do not attach a modem to this port.

Connect a Category 5, shielded twisted-pair (STP) cable from the serial management (SER MGT) port to the terminal device.

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

To Connect the Service Processor Network Management Port

The service processor network management port is labeled NET MGT (FIGURE 5-4). This port is located just to the right of the serial management (SER MGT) port on the rear panel.

FIGURE 5-4 Service Processor Network Management Port - Rear Panel

Figure showing the network management port.

Note - This port is not operational until you configure the network settings (through the serial management port), as detailed in Connecting to the ILOM Service Processor for the First Time.

Note - If you have access to a DHCP server on the network, you can see the service processor get an IP address because the DHCP client is enabled by default.

Note - 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. Instructions are given in Chapter 6.

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

To Connect the Ethernet Network Cables

The server has four network connectors, marked NET0, NET1, NET2, and NET3 (FIGURE 5-5). These connectors are RJ-45 Gigabit Ethernet.

FIGURE 5-5 Service Processor Ethernet Network Ports - Rear Panel

Figure showing the Ethernet network ports.

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

NET0 is the farthest left port in the 4-port network cluster in FIGURE 5-5.

2. 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.

To Connect AC Power Cables to the Server

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 AC power cable, system messages could be missed.

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

Caution - The server goes into Standby mode and the service processor initializes as soon as the AC power cable is connected to the power source.

Go to Powering On the System for the First Time for instructions on connecting the server to AC power.

DC Operation Conditions and Procedures

This section provides DC power cabling and requirements information.

DC Power Source Requirements

TABLE 5-3 lists DC power source requirements for each power supply in the Sun Netra X4250 server, and TABLE 5-4 lists DC power source requirements for the server as a whole.

Note - DC power source must be reliably connected to ground.

TABLE 5-3 DC Operating Power Limits and Ranges for Each Power Supply in the Server
Description	Limit or Range
Operating input voltage range	-40 VDC to -75 VDC nominal
Maximum operating input current	11.7 A
Maximum operating input power	660 W

TABLE 5-4 DC Operating Power Limits and Ranges for the Server
Description	Limit or Range
Operating input voltage range	-40 VDC to -75 VDC
Maximum operating input current	23 A
Maximum operating input power	900 W

The server must meet the following requirements:

Must be reliably connected to protected earth ground

May be supplied by one or two power sources, isolated from each other

Must be capable of providing up to 500 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 server must meet the following requirements:

Suitable conductor material: use copper conductors only

Power supply connections through the input connector: 12 AWG (between the Sun Netra X4250 server and the source). There are three conductors:

-48V (negative terminal)

Chassis ground connection

-48V Return (positive terminal)

System ground conductor: 12 AWG (to be connected to the chassis)

Cable insulation rating: Minimum of 75˚C (167˚F), low smoke fume (LSF), flame retardant

Cable type 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: Per applicable National Electrical Codes

Grounding cable insulation color: Green and 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.

When attaching DC cables, keep the following requirement in mind:

Caution - You must restrict the connection from the server to the DC power source to minimize the possibility of transient energy appearing 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 devices must be provided as part of each equipment rack.

Circuit breakers must be located between the DC power source and the Sun Netra X4250 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.

To Assemble the DC Input Power Cable

1. Identify the parts that you will use to assemble the DC input power cable (FIGURE 5-6).

The following DC connection parts are required to assemble one or more DC power input cables. These cables connect the -48V DC input sources to the power supply units.

DC input plugs

Strain relief housings

Cage clamp operating lever

Tie wraps

FIGURE 5-6 DC Connection Parts

Figure showing the DC input plug, cage clamp operating lever, and strain relief housing.

Figure Legend
1	Strain relief housing
2	DC input plug
3	Cage clamp operating lever

2. 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.

3. Get a DC input plug from the shipping kit.

4. 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.

5. 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 5-7 Stripping the Insulation From the Wire

Figure showing the amount of insulation to strip from the wire (5/16 inches).

Figure Legend
1	5/16 in. (8 mm)

6. 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 5-8).

FIGURE 5-8 Opening the Cage Clamp Using the Cage Clamp Operating Lever

[ D ]

Figure Legend
1	DC input plug

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 5-9).

FIGURE 5-9 Opening the Cage Clamp Using a Screwdriver

Figure showing how to open the cage clamp using a screwdriver.

Figure Legend
1	DC input plug

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

FIGURE 5-10 shows which wires should be inserted into each hole in the DC input plug.

FIGURE 5-10 Assembling the DC Input Power Cable

Figure showing how to assemble the DC input power cable.

Figure Legend
1	Top of connector	3	From chassis ground (green and yellow)
2	From -48V return	4	From -48V

8. Repeat Step 6 and Step 7 for the other two wires to complete the assembly of the DC input power cable.

9. Repeat Step 4 through Step 8 to create as many DC input power cables as you need for your unit.

You need two DC input power cables, one for each of the power supplies.

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 5-8 and FIGURE 5-9). Pull the wire from the DC input plug.

To Install the Strain Relief Housings

1. 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 5-11 Inserting the Bottom Portion of the Strain Relief Housing

Figure showing how to insert the bottom portion of the strain relief housing.

2. Route the three wires coming from the DC power source through the opening at the end of the bottom portion of the strain relief housing (FIGURE 5-12).

FIGURE 5-12 Routing the Wires out of the Bottom Portion of the Strain Relief Housing

Figure showing how to route the wires out of the bottom portion of the strain relief housing.

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

4. Loop the tie wrap over the wires and back out of the strain relief housing, and tighten the tie wrap to secure the wires to the strain relief housing (FIGURE 5-13).

FIGURE 5-13 Securing the Wires to the Strain Relief Housing

Figure showing how to secure the wires to the strain relief housing.

5. 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 5-14).

FIGURE 5-14 Assembling the Strain Relief Housing

Figure showing how to assemble the strain relief housing.

Managing Cables With the CMA

This section provides instruction for using the cable management assembly.

To Secure the Server Cables in the CMA

Once the server cables are connected and placed inside the CMA, open the velcro cable straps and wrap the straps around the CMA, securing the cables inside the CMA (FIGURE 5-15).

FIGURE 5-15 Securing the Server Cables With the CMA and Velcro Straps

Figure showing how to secure cables inside the CMA.

Note - Verify the operation of the slide rails and CMA, and cable service loops. Perform the steps in the following procedure again before continuing: To Verify the Operation of the Slide Rails and the CMA.