Impact On Lpar Manager By I/O Slot Expansion Unit Modes - Hitachi Compute Blade 2000 User Manual

Impact on LPAR manager by I/O slot
expansion unit modes
All 16 slots of an I/O slot expansion unit can be divided. The unit has two operating modes,
1:8 mode and 1:4 mode. The task of changing modes is performed only by maintenance
personnel. Changing modes can affect LPAR manager as follows:
1:8 mode
IOEU
7
Assigned slot #
-
Physical slot # 15 14
1:4 mode
IOEU
Assigned slot #
-
Physical slot #
15 14
Impact
When I/O cards are installed in physical slots 4 and 5 (12 and 13) with 1:8 mode, changing
modes will change the PCI Bus numbers of those cards as shown in the following table.
This will cause the following conditions.
Windows recognizes the I/O card in the same physical slot# as a new device. If no

PCI bus value exists, the driver setting value is the default. If a PCI bus exists, the
value that is set to the same assigned slot# before the mode change is applied.
When I/O cards are installed in physical slots 2 and 3 with 1:4 mode and the mode is

changed to 1:8 mode, their PCI Bus numbers will be changed: For Linux, the
identifier such as ethx changes; for Windows, the number of Local Area connection
changes.
The number of VNIC segment changes. The segment number of a shared NIC

automatically fluctuates as the number of NICs fluctuates.
1:8 mode
Physical Assigned
slot# slot#
0 8
1 9
2 10
3 11
4 12
5 13
6 14
7 15
to PCI slot 1
Port 0
6 5 4 3 2 1 0
- - - - - - -
13 12 11 10 9 8
Port 0
3 2 1 0
- - - - - - -
13 12 11 10 9 8
PCI Number Physical
BUS# of Bus slot#
in use
05h-08h 4
09h-0Ch 4
0Dh 1
0Eh 1
0Fh-12h 4
13h-16h 4
17h 1
18h 1
1411
to PCI slot 0
IOEU Port 0
15 14 13 12 11 10 9
- - - - - -
7 6 5 4 3 2 1
IOEU Port 0
7 6 5
- - - - - -
7 6 5 4 3 2 1
1:4 mode
Assigned PCI Number
slot# BUS# of Bus
in use
0 4 05h-08h
1 5 09h-0Ch
2 - -
3 - -
0Dh-10h
4 6
5 7 11h-14h
6 - -
7 - -
8
- -
0
4
- -
0
4
4
-
-
4
4
-
-