190
Planning, Installing, and Managing the IBM System x3950 M2
The server BIOS controls the PCI adapter boot sequence by executing the slot’s
onboard ROM in this sequence. If multiple adapters from the same vendor are
installed (for example, multiple ServeRAID MR10M adapters), the ROM from one
of them will be used for all of them. These adapters have their own policy
regarding which one will be the boot adapter. ServeRAID or HBA adapter
typically fall into this category. Because of this, the boot order might appear to be
incorrect. System BIOS does not and cannot control this behavior.
A re-arrangement might be required in case the adapters, installed in your
system, do not map their ROM space dynamically, which can result in
overlapping to the mapped ROM space of other adapters in the same system. A
PCI ROM space allocation event can occur in POST after you power on the
server. This means that not all PCI Express adapters are initialized during POST,
because the PCI ROM space limit was reached or any overlapping of PCI
resources remained. This behavior is seen typically if you add-in, for example,
Ethernet adapters in slots with a higher slot-scan priority before the Fibre
channel HBA or ServeRAID adapters.
Disabling of specific features such as PXE boot at Ethernet adapters or the BIOS
at HBA adapters, that you do not have to boot from SAN devices, and disabling of
onboard devices are also options for solving any PCI ROM allocation errors. Your
in country technical support team may advice here.
3.5.4 PCI Express device-related information in the BIOS
Information about a PCI Express device can be found in the BIOS of your
x3850 M2 and x3950 M2 servers.
BIOS PCI Express options
BIOS PCI Express options are displayed after you press
F1
during system POST
and then select
Advanced Setup
→
Advanced PCI Settings
. See Figure 3-79.
Figure 3-79 BIOS: Advanced PCI Settings
Содержание 88743BU - System x3950 E
Страница 2: ......
Страница 10: ...viii Planning Installing and Managing the IBM System x3950 M2 ...
Страница 14: ...xii Planning Installing and Managing the IBM System x3950 M2 ...
Страница 106: ...88 Planning Installing and Managing the IBM System x3950 M2 ...
Страница 262: ...244 Planning Installing and Managing the IBM System x3950 M2 Figure 4 36 IBM System x technical support on the Web ...
Страница 309: ...Chapter 5 Installation 291 Figure 5 36 Select type of installation Upgrade or Custom clean installation ...
Страница 316: ...298 Planning Installing and Managing the IBM System x3950 M2 ...
Страница 398: ...380 Planning Installing and Managing the IBM System x3950 M2 ...
Страница 423: ... 0 5 spine 0 475 0 875 250 459 pages Planning Installing and Managing the IBM System x3950 M2 ...
Страница 424: ......
Страница 425: ......