GE OPTIMA MR360 Service Training page 126

The VRE(Volume Reconstruction Engine ) replaces the Array Processor in the Signa
HDx, HDe and SV systems. It does the image processing and reconstruction functions
that were previously done by the Reflex AP's in the Excite2A and Excite HD systems.
The VRE in the SV system has only one ICN (Image Compute Node). The ICN is a Linux
PC in itself. One ICN is roughly equivalent to the processing power of a Reflex 800 AP
in the Excite HD. Whenever the system and/or MGD IP addresses are changed, the
VRE must reconfigure or it will not communicate with the system.
Sun 4100 and Sun 4170 can all be used in SV system. But because the Sun 4100 has
been end of life, only Sun 4170 is used in current system. But if Sun 4100 used in old
system is broken, you have to replace it with Sun 4170. During VRE Sun 4100
configuration, no OS disk is needed. But one specific OS disk for Sun 4170 is required
to be insert to the DVD driver in the host during VRE Sun4170 configuration.
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