What are Groups?

The key to flexibility in Cubix Systems is the backplane. It is installed in the bottom of the system, and determines how many plug-in computers can be installed.

Backplanes are divided into "groups". Each group consists of a configuration of PCB slots (similar to ISA or PCI bus connectors on a motherboard). One slot in each group is dedicated for a plug-in computer. Additional slots are available for third party boards such as internal modem, fax boards, or additional LAN adapters.

Each group on the backplane is an individual computer system. It is electronically independent of all other groups, and can be powered on or off, or reset independently with controls on the front panel of the Density System.

The Density System backplanes can hold up to 4 dual SMP or 8 single processor Pentium computers, or combinations of both plug-in computers. There are three backplane configurations available.

Passive Backplane Options

The Density Series enclosure is assembled in one of the following passive backplane configurations:

Figure 5 - 4x DP Density Series Backplane

4X DP (Figure 5)

• Supports up to 4 Cubix DP model dual-SMP servers.
• One shared ISA/PCI expansion slot is provided for each group.

Note: Backplanes with support for the DP 6300 Dual Processor, two board sets had an additional I/O Board slot in each group.

Figure 6 - 8x2 Density Series Single-Processor Backplane

8X SP (Figure 6)

• Supports up to 8 Cubix SP model single-processor servers.
• One ISA/PCI expansion slot is provided for each group.
• Some SP boards require more space than is standard within a single group and will limit the number of processors within a system.

Figure 7 -  2x DP+4x SP Density Series Backplane

2X DP + 4X SP (Figure 7)

• Supports 2 Cubix DP model dual-SMP servers and up to four Cubix SP model single-processor servers.
• One ISA/PCI expansion slot is provided for each group.
• A Cubix SP model single-processor server can be installed in the DP model dual-SMP server group.
• Some SP boards require more space than is standard within a single group and will limit the number of processors within a system. Note: Backplanes with support for the DP 6300 Dual Processor, two board sets had an additional I/O Board slot in each group.

Note: Backplanes with support for the DP 6300 Dual Processor, two board sets had an additional I/O Board slot in each group.

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