Re: p570 LPARs and PCI Slot Assignments

From: JOSEPH KREMBLAS (JKREMBLAS_at_REDHEARTGIFTS.COM)
Date: 12/29/04

  • Next message: Libor Laubacher: "Re: p570 LPARs and PCI Slot Assignments" 
    Date:         Wed, 29 Dec 2004 11:00:46 -0700
To: aix-l@Princeton.EDU

    Raj,

            You're consultant is telling you right. You must read, study,
    learn, draw pictures, and understand the PLANNING guide for the P570.
    The systems are different (for some reason) and you will be punished for
    your sins or transgressions if you don't understand the rules.

            --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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