Car Solutions QPI-G7-MAIN-V2.0 Installationsanleitung PDF herunterladen (Seite 14)

Note

Even though internal testing was done using a DL980 with 64 cores and 12 FC

HBA cards, from an HP support requirement there is currently a support limit of

11 PCIe FC HBA cards using either QLogic or Emulex FC 8Gb/s HBA cards.

With the increase in processor cores supported on the DL980, more FC IO cards

may improve the overall throughput of the server. HP is working on enabling

more than 11 FC cards on the DL980 that will be available by the end of 2012.

QLogic and Emulex vendors are working on a BIOS upgrade to increase the

PCIe FC card limit beyond 11.

However there is a workaround for QLogic DP FC cards as long as you are not

booting from SAN. Ensure DL980 BIOS P66 06/24/2011 or greater is

installed.

Please check SPOCK for availability details.

See http://www.hp.com/storage/spock (requires an HP Passport account).

It is best practices to spread the workload evenly over all I/O subsystems. The DL980 has 3 I/O hub (IOH)

subsystems, and with the PCIe I/O trays used, slots 7-11 are on the Main IOH, slots 1-6 on the first optional IOH and

slots 12-16 on the 2nd optional IOH (low profile).

The best I/O layout specified was:

 IOH 1 – slots 7, 8, 9, 11 (there are only two x8 slots on this subsystem as PCI lanes are used for onboard I/O such

as network card NC375i, video, etc.)

 IOH 2 – slots 2, 3, 5, 6

 IOH 3 – slots 12, 13, 15, 16

The workload distribution over the IOHs is more important than the slots, as the IOH goes directly to a pair of CPU

sockets to handle the IRQs, etc. The IOH 1 and 2 are connected to the upper CPU board while IOH 3 is connected to

the lower CPU board. The following diagram illustrates the physical layout of I/O slot locations and other

components, relative to the DL980 processor boards.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 39 40

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Car Solutions QPI-G7-MAIN-V2.0 Installationsanleitung Seite 14