Dynamic Reconfiguration Function; Flexible I/O Mode; Figure 5.4 Conceptual Diagram Of Flexible I/O - Fujitsu PRIMEQUEST 2000 Series General Description Manual

CHAPTER 5 Partitioning

5.7 Dynamic Reconfiguration Function

5.7 Dynamic Reconfiguration Function
Dynamic Reconfiguration (DR) is a function that changes the resource configuration of a partition without
rebooting the partition.
5.8

Flexible I/O Mode

The PRIMEQUEST 2000 series (except for 2800B) supports flexible I/O modes as I/ O connection modes.
The flexible I/O function can configure a partition by combining any SB and IOU regardless of the mounting
location.
The flexible I/O function makes it possible to respond flexibly to modifications of the SB resources and I/O
resources, and failure degradation.
Each IOU from the SB can be connected to a bandwidth of 16 lanes through the PCI Express switch.
Moreover, the input (side (8 lanes) of IOU_1G can connect only to the first half of 16 lanes.
Remarks
Since the structure of the PCI bus tree can be maintained even when the mounting locations of the SB and
IOU change, the I/O path other than CPU0 of the Home SB (the SB where PCH is operating) will be disabled.
For details on IOU_1GbE and IOU_10GbE, see
5.9 Home SB
Of the SBs making up a partition, the SB that enables the PCI Interface of CPU # 0 and Legacy of PCH is
called the Home SB.
Each partition always contains one Home SB.
Selecting the Home SB
- PRIMEQUEST 2400E/2800E
However, there may be instances when an SB having a smaller number than the Home SB is added
using the DR function, and when the Home SB is not necessarily the SB of the smallest physical number.
To find out which SB is the Home SB, please check with the MMB Web-UI.
The setting of the Home SB during an SB degradation /Reserved SB operation is as follows.
- When the Home SB is degraded, the SB with the smallest number among the remaining SBs
becomes the Home SB.
- If an SB other than the Home SB is degraded, the Home SB does not change
- When switching the Home SB with the Reserved SB, the SB with the smallest number among the
remaining SBs and the Reserved SB is considered as the Home SB.
'2.7 IOU (IO

FIGURE 5.4 Conceptual diagram of Flexible I/O

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