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SPARC T5-8 Server Service Manual

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Updated: February 2019
 
 

PCIe Card Installation Guidelines

All 16 slots support PCIe cards with the following characteristics:

  • Type: hot-plug, low-profile adapters

  • Mode: x8 Gen1, x8 Gen2, and x8 Gen3 cards


Note - If you install a 16-lane card in any slot, electrical support is provided to the card's lowest 8 lanes.

Note -  Some PCIe cards are restricted to specific I/O slots to meet system cooling requirements. Other I/O cards provide better performance when installed in particular slots. For more information about PCIe slot restrictions for specific devices, see I/O Slot and Quantity Restrictions in SPARC T5-8 Server Product Notes .

To achieve optimal load balancing in a fully-populated server, use the following order to install PCIe cards.

4
7
8
9
10
13
3
14
2
5
6
11
12
15
1
16

To achieve optimal load balancing in a half-populated server, use the following order to install PCIe cards.

5
9
7
11
3
13
4
14
6
10
8
12
1
15
2
16

You might choose to populate the slots differently due to Oracle VM software or redundant failover considerations, but load balancing might not be as efficient. You should distribute the PCIe cards evenly across the available root complexes, leaving slots under root complexes 300 and 4c0 as the last to be populated.


Note -  If you are upgrading the server, you are done with the process.

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