C H A P T E R 3

Server Description

The Netra CT servers slide into the chassis and are secured to the chassis using captive screws at the top and base of the server. Each Netra CT server is an independent computer, with its own host CPU board and rear transition module (RTM), midplane, I/O slots, and, in some cases, storage devices and removable media.

Server Types

The Netra CT chassis supports two types of Netra CT servers:

Netra CT 810 server

Netra CT 410 server

Note - Also, the Netra CT chassis supports the Netra CT 800 server and the Netra CT 400 server. For information on those servers, refer to the documentation that you received with the servers.

Netra CT 810 Server

TABLE 3-1 provides the physical specifications for the Netra CT 810 server, and FIGURE 3-1 shows the Netra CT 810 server.

TABLE 3-1 Physical Specifications, Netra CT 810 Server
Measure	U.S.	Metric
Width	8.6 inches	217.5 mm
Depth	15 inches	378.3 mm
Height	20.2 inches	512.7 mm
Weight, fully loaded	38 lb	17.2 kg

FIGURE 3-1 Netra CT 810 Server Physical Specifications

Figure showing physical specifications for the Netra CT 810 server. Same specifications are also given in TABLE 3-1.

Netra CT 410 Server

TABLE 3-2 provides the physical specifications for the Netra CT 410 server, and FIGURE 3-2 shows the Netra CT 410 server.

TABLE 3-2 Physical Specifications, Netra CT 410 Server
Measure	English	Metric
Width	4.3 inches	108 mm
Depth	14.9 inches	378.7 mm
Height	20.2 inches	512.7 mm
Weight, fully loaded	22 lb	10 kg

FIGURE 3-2 Netra CT 410 Server Physical Specifications

Figure showing physical specifications for the Netra CT 410 server. Same specifications are also given in TABLE 3-2.

The following combinations of the two server types are supported in a Netra CT chassis:

One or two Netra CT 810 servers (FIGURE 3-3)

One to four Netra CT 410 servers (FIGURE 3-4)

One Netra CT 810 server and one or two Netra CT 410 servers (FIGURE 3-5)

FIGURE 3-3 Two Netra CT 810 Servers in a Chassis

Figure showing two Netra CT 810 servers being installed in a chassis.

FIGURE 3-4 Four Netra CT 410 Servers in a Chassis

Figure showing four Netra CT 410 servers being installed in a chassis.

FIGURE 3-5 One Netra CT 810 Server and Two Netra CT 410 Servers in a Chassis

Figure showing one Netra CT 810 server and two Netra CT 410 servers being installed in a chassis.

Determining Which Server You Have

If you are uncertain whether you have a Netra CT 810 server or a Netra CT 410 server in a chassis, locate the system status panel (FIGURE 3-6) on the front of the chassis.

FIGURE 3-6 System Status Panel Locations

Figure showing the location of the system status panels on the Netra CT servers.

The server identifier at the bottom right corner of the system status panel indicates a Netra CT 810 server or a Netra CT 410 server (FIGURE 3-7).

Note - Also, you can use the server identifiers on the system status panel to determine if you have a Netra CT 800 or a Netra CT 400 server. Refer to the documentation that you received with those servers for more information.

FIGURE 3-7 Locating the Server Identifiers

Figure showing the location of the server identifiers for the Netra CT servers.

Midplanes

Each Netra CT server has a midplane. A midplane is the functional equivalent of a backplane. The CPU board, storage devices, and I/O boards all plug into the midplane from the front of the chassis, and the rear transition modules plug into the midplane from the rear. The midplane for each server is secured to the rear of the server unit.

The midplanes support the 5V-V10 CompactPCI bus. Although the CPU board only supports the 32-bit CompactPCI bus, the midplanes in both Netra CT servers allow 64-bit peer-to-peer transactions. Also, the midplanes support the H.110 telephony bus on all but the following slots:

Slots 1 and 8 in a Netra CT 810 server

Slots 1 and 3 in a Netra CT 410 server

Slot 1 in the Netra CT 810 server and slot 3 in the Netra CT 410 server are reserved for the host CPU board. Slot 8 in the Netra CT 810 server and slot 1 in the Netra CT 410 server are proprietary I/O slots, intended solely for alarm cards. All CompactPCI slots support basic, full, and high-availability hot-swap on every CompactPCI slot.

FIGURE 3-8 shows the different buses on the Netra CT 810 server, and FIGURE 3-9 shows the different buses on the Netra CT 410 server.

FIGURE 3-8 Buses in a Netra CT 810 Server (Front View)

Figure showing the buses in a Netra CT 810 server. [ D ]

FIGURE 3-9 Buses in a Netra CT 410 Server (Front View)

Figure showing the buses in a Netra CT 410 server. [ D ]

Server Access

Both Netra CT 410 servers and Netra CT 810 servers are rear-access models. A rear-access model is designed so that all the cables to the CompactPCI boards are connected from the rear of the chassis.

For both the Netra CT 810 server and the Netra CT 410 server, all the cables are connected to rear transition modules installed at the rear of the Netra CT server. The rear transition modules, in effect, extend the CompactPCI boards installed in each slot from the midplane to the rear of the chassis.

Each rear transition module installed must have an accompanying board installed in the front board cage of the server; however, the type of board installed in the front board cage varies:

Host CPU board--A host CPU board must be installed in the front board cage in the appropriate slot (slot 1 in the Netra CT 810 server and slot 3 in the Netra CT 410 server). In addition, a corresponding host CPU rear transition module must be installed in the rear board cage for the same slot number, viewed from the rear. The host CPU rear transition module provides connections from the host CPU board to standard I/O connectors at the rear of the system.

I/O board or satellite CPU board--An I/O board or satellite CPU board must be installed in the front board cage in one of the I/O slots. It contains the hot-swap LED that tells you when an I/O board or satellite CPU board is ready for removal. In addition, the corresponding rear transition module must be installed in the rear board cage in the same slot number, viewed from the rear. The rear transition module provides connections from the I/O board or satellite CPU board to standard connectors at the rear of the system.

Alarm card--An alarm card must be installed in the front board cage in the appropriate slot (slot 8 in the Netra CT 810 server and slot 1 in the Netra CT 410 server). In addition, an alarm rear transition module must be installed in the rear board cage in the same slot number, viewed from the rear.

FIGURE 3-10 shows the top view of a Netra CT 810 server with an alarm card installed, and FIGURE 3-11 shows the top view of a Netra CT 410 server.

FIGURE 3-10 Netra CT 810 Server (Top View)

Figure showing the acceptable cards and cabling for a Netra CT 810 server. [ D ]

FIGURE 3-11 Netra CT 410 Server (Top View)

Figure showing the acceptable cards and cabling for a Netra CT 410 server. [ D ]

The slot to the left of the power supply in a Netra CT 410 server is reserved for the host CPU front termination board (see Host CPU Front Termination Boards (FTB) for more information).