IBM x3850 X5, Руководство по внедрению

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Chapter 7. IBM System x3690 X5
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7.5.2 PCIe adapters: Slot selection
The x3690 X5 offers a wide variety of PCIe adapter configurations among possible riser card
combinations, as described in 4.10, “PCIe slots” on page 164. The two riser slots have these
riser card options:
򐂰 Riser slot 1 can contain one of the following options:
– Two x8 slots (installed in most standard models)
– One x16 slot for 3/4-length cards
– One x16 slot for full-length cards (memory mezzanine cannot be used)
򐂰 Riser slot 2:
– Three x8 slots (one slot is wired as an x4 slot) (installed in most standard models)
The server can be ordered without riser card 1 or with any of the three possible riser cards.
Riser card 2 comes standard in most models of the server, as described in 4.10, “PCIe slots”
on page 164.
Note these key points about the riser cards:
򐂰 Riser card 1 supports a single x16 adapter, such as a video card. If needed, an auxiliary
power connector is located on the system board near the riser card.
򐂰 Two x16 riser cards are available for riser slot 1: one for full-length cards and one for
3/4-length cards. If you use the full-length card riser, you cannot also install the memory
mezzanine, because the two options do not both physically fit in the server.
򐂰 As described in 4.9.5, “ServeRAID Expansion Adapter” on page 157, the ServeRAID
Expansion Adapter is a SAS expander that allows you to create RAID arrays of up to 16
drives and across up to four backplanes. The Expansion Adapter must be installed in PCI
Slot 1 (in riser card 1) and the ServeRAID adapter must be installed in PCI Slot 3 (in riser
card 2). See Figure 4-44 on page 164 for the locations of these slots.
򐂰
Slot 4 of riser card 2 is physically an x8 slot, but electronically, it is an x4 slot.
򐂰 If the Emulex 10Gb Ethernet Adapter is installed (it is standard in certain models, as listed
in 4.3, “Models” on page 124), the adapter is installed in slot 5 in riser card 2. See 4.10.3,
“Emulex 10Gb Ethernet Adapter” on page 166 for details about the adapter.
Although true performance on a given PCIe adapter can largely depend on the configuration
of the environment in which it is used, general performance considerations exist with respect
to the x3690 X5 server.
The I/O hub supports 36 lanes of PCIe traffic with a combined bandwidth of 36 GBs. Each
processor’s QPI link to the I/O hub is capable of a maximum throughput of 26 GBs, depending
on the processors installed in this server. With only one processor installed in this server, the
maximum combined bandwidth of all the PCIe lanes is reduced to the maximum bandwidth of
a single QPI link.
Microsoft Windows 2008 x64: When installed on an UEFI server, Microsoft Windows
2008 x64 will install Microsoft Boot Manager as part of the boot sequence. Regardless of
how you change the boot sequence in the boot manager, Microsoft Boot Manager will
always be at the top of the sequence.
When you install this same OS with Legacy Only enabled, Microsoft Boot Manager is not
installed as part of the boot manager. Removing the Legacy Only option from the boot
manager will prevent the server from booting into the installed Windows 2008 x64.