HP Integrity Superdome SX1000 Site Preparation Guide, Fifth Edition - HP Integ - Page 105

I/O Chassis Allocation, Appendix B

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Configuration Guidelines Configuration Guidelines Strive always for a link load of 1.0 or less. The lower the link load, the better off the system. If link loads begin to approach 2, bottlenecks may occur. For a dual cabinet system, there are six equations covering each link: 1. Quad 0 talking to Quad 1 L1 = Q0*Q1/Qt/1 2. Quad 0 talking to Quad 2 L2 = Q0*Q2/Qt/1 3. Quad 0 talking to Quad 3 L3 = Q0*Q3/Qt/1 4. Quad 1 talking to Quad 2 L4 = Q1*Q2/Qt/1 5. Quad 1 talking to Quad 3 L5 = Q1*Q3/Qt/1 6. Quad 2 talking to Quad 3 L6 = Q2*Q3/Qt/1 I/O Chassis Allocation For best high availability, I/O devices are connected to different I/O Bays to reduce single points of failure. Rules dictate that the roots are selected first, then all other I/O are added. I/O can connect anywhere, but tools will guide you to the best selection. Appendix B 97

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Appendix B
Configuration Guidelines
Configuration Guidelines
97
Strive always for a link load of 1.0 or less.
The lower the link load, the better off the system. If link loads begin to approach 2, bottlenecks may occur.
For a dual cabinet system, there are six equations covering each link:
1. Quad 0 talking to Quad 1 L1 = Q0*Q1/Qt/1
2. Quad 0 talking to Quad 2 L2 = Q0*Q2/Qt/1
3. Quad 0 talking to Quad 3 L3 = Q0*Q3/Qt/1
4. Quad 1 talking to Quad 2 L4 = Q1*Q2/Qt/1
5. Quad 1 talking to Quad 3 L5 = Q1*Q3/Qt/1
6. Quad 2 talking to Quad 3 L6 = Q2*Q3/Qt/1
I/O Chassis Allocation
For best high availability, I/O devices are connected to different I/O Bays to reduce single points of failure.
Rules dictate that the roots are selected first, then all other I/O are added.
I/O can connect anywhere, but tools will guide you to the best selection.