VDX104 Manual - Tri-M Systems Inc.
VDX104 Manual - Tri-M Systems Inc.
VDX104 Manual - Tri-M Systems Inc.
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18-Nov-2010<br />
<strong>VDX104</strong> <strong>Manual</strong><br />
CHAPTER 8:<br />
REDUNDANCY<br />
8.1 Overview<br />
The Vortex86DX embeds some additional circuitry allowing two system boards to be connected together for<br />
redundancy purposes. This circuitry is composed of additional tri-state buffers allowing some buses and<br />
devices to be interconnected, extra logic to control these buffers and the systems status and communication<br />
channels to exchange information between both systems.<br />
8.2 Block diagram<br />
The following diagram shows how the system CPU can be interconnected.<br />
The logic and communication ports are interconnected to signal the other CPU when a fail state occurs and to<br />
keep the data up to date on both CPUs.<br />
<strong>Tri</strong>-M Technologies <strong>Inc</strong>. Tel: 800.665.5600, 604.945.9565<br />
1407 Kebet Way, Unit 100 Fax: 604.945.9566<br />
Port Coquitlam, BC V3C 6L3 E-mail: info@tri-m.com<br />
Canada Web site: www.tri-m.com 35
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