IBM N Series, Hardware Manual

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Chapter 4. High-end systems
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4.3 IBM N7x50T configuration rules
This section describes the configuration rules for N7x50 systems.
4.3.1 IBM N series N7x50T slot configuration
This section describes the configuration rules for the vertical I/O slots and horizontal PCIe
slots.
Vertical I/O slots
The vertical I/O slots include the following characteristics:
򐂰 Vertical slots use custom form-factor cards:
– Look similar to standard PCIe
– Cannot put standard PCIe cards into the vertical I/O slots
򐂰 Vertical slot rules:
– Slot 1 must have a special Fibre Channel or SAS system board: Feature Code 1079
(Fibre Channel) and Feature Code 1080 (SAS)
– Slot 2 must have NVRAM8
– Slots 11 and 12 (N7950T with IOXM only):
• Can configure with a special FC I/O or SAS I/O card: Feature Code 1079 (FC) and
Feature Code 1080 (SAS)
• Can mix FC and SAS system boards in slots 11 and 12
– FC card ports can be set to target or initiator
Horizontal PCIe slots
The horizontal PCIe slots include the following characteristics:
򐂰
Support standard PCIe adapters and cards:
– 10 GbE NIC (new quad port 1 GbE PCIe adapter for N7x50T FC1028)
– 10 GbE unified target adapter
– 8 Gb Fibre Channel
– Flash Cache
򐂰
Storage HBAs: Special-purpose FC I/O and SAS I/O cards, and NVRAM8, are not used in
PCIe slots
4.3.2 N7x50T hot-pluggable FRUs
The following items are hot-pluggable:
򐂰 Fans: Two-minute shutdown rule if you remove a fan FRU
򐂰
Controllers: Do not turn off PSUs to remove a controller in dual- controller systems
򐂰 PSUs:
– One PSU can run the entire system
– There is no 2-minute shutdown rule if one PSU removed
򐂰 IOXMs are not hot pluggable (N7950T only):
– Removing the IOXM forces a system reboot
– System does not recognize a hot-plugged IOXM