Magma P13RR-TEL user manual Daisy-Chaining ExpansionSystems

M A G M A

The following image shows the Apple Profiler display when a MAC has 2 Expansion Systems connected in a “Fan-Out” configuration

MAC System Profiler with 2 PCI to PCI Expansion Systems Installed

in a “Fan-Out Configuration.

Daisy-Chaining

Recognizing the typical insignificance of the performance variance between the “Fan-Out” and “Daisy-Chaining” configurations, the primary reason for using this one would be limitations on physical space. This could be the number of available slots on the computer motherboard, or a lack of desk or rack space.

Daisy-Chaining ExpansionSystems

PCI Expansion	4, 7, 13Slot Chassis
Host Card

Magma

Expansion

Cable

PCI Expansion

Host Card

Simply place anotherHost ExpansionCard into a vacant PCI slot on the 1st ExpansionSystem.

Then connect #1to #2 using the ExpansionCable.

Proprietary

Expansion

Cable

4, 7, 13Slot Chassis

In the daisy-chain configuration, successive PCI expansion systems are added to the "end" of the PCI bus hierarchy, which adds "depth" to the PCI Local Bus by increasing the number of PCI Local Bus levels active in the system configuration.

Appendix B Need More Slots? 45