Re: p570 LPARs and PCI Slot Assignments

From: Raj Atwal (atwalrs_at_YAHOO.COM)
Date: 12/29/04

  • Next message: Kumar, Praveen (cahoot): "Re: Grep lines >2048 bytes" 
    Date:         Wed, 29 Dec 2004 14:20:50 -0800
To: aix-l@Princeton.EDU

    So in my scenario, you believe that the following would not be possible...

    "..I believe I could carve a single LPAR and assign one PCI slot to that single LPAR from each of the system drawers and each of the D20s (total of 5 PCI-X slots) without restriction. Is what I am saying correct or are there indeed PCI-X assignment limitations when using multiple system drawers and a couple of D20s?"

    So are you implying that this depends on my set-up or flatly that this is not possible? I am unsure exactly what the special p570 PCI-X limiatations are because I cannot find them documented anywhere....Thanks.

    JOSEPH KREMBLAS <JKREMBLAS@REDHEARTGIFTS.COM> wrote:
    There are, indeed, PCI-X limitations . . . in case there is any doubt amongst . . .. Refer to the P670 planning guide for more details.

        --joseph

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of Raj Atwal
    Sent: Wednesday, December 29, 2004 8:48 AM
    To: aix-l@Princeton.EDU
    Subject: p570 LPARs and PCI Slot Assignments

    Hi all,

    I have two p570s made up of 3 system drawers and 2 D20s I/O drawers each. I am still awaiting delivery of these servers but I have began the planning of the installs. I will be configuring multiple LPARs.

    A senior consultant at my company has told me that there are special rules on p570 regarding PCI Adapter assignments to LPARs. I have looked at the p570 Technical Guide and many of the p5 redbooks and I cannot find any special rules for the p570 compared to other Regatta systems.

    I have calculated a total of 32 PCI slot per p570. We do not have the additinal RIO card, and therefore slot 6 is open on the system drawers. I calculate 6 PCI slots per system drawer (6*3 =18) and 7 PCI slots per D20 (7*2 =14), for a total of 32 (18 + 14 =32) . Do you concur?

    Secon question and more importantly, I believe I could carve a single LPAR and assign one PCI slot to that single LPAR from each of the system drawers and each of the D20s (total of 5 PCI-X slots) without restriction. But this other guy is making me second guess myself. Is what I am saying correct or are there indeed PCI-X assignment limitations when using multiple system drawers and a couple of D20s?

    I look forward to any opinions and experiences. TIA

    ______________________________
    Raj Atwal

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  • Next message: Kumar, Praveen (cahoot): "Re: Grep lines >2048 bytes"

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