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  • 1.  AIX SDD & MPIO Comparison (Pros and Cons)

    Posted Thu March 09, 2006 12:32 PM

    Originally posted by: SystemAdmin



    Greetings. some of the tech people in my company are considering switching from SDD to MPIO for multipathing. I'm not sure if its a good idea, so I was doing a bit research on the web and ran into some user's experiences (not a lot) such as SDD and MPIO cannot coexist, native MPIO is not as flexible as SDD the was it handles load balancing (inferior algorithm?), MPIO does not support concurrent code loads and so forth.

    I need more technical/high-level details on this matter. So do you think we can discuss this issue futher as to the pros and cons of both these technology and get a better understanding where we are at and where we want to get.
    #AIX-Forum


  • 2.  Re: AIX SDD & MPIO Comparison (Pros and Cons)

    Posted Thu March 09, 2006 01:48 PM

    Originally posted by: VirtualGreg


    With MPIO, use the SDDPCM plug in. Works great. Lots of the commands are similar, you'll deal with hdisks instead of vpaths. Better support for Virtual I/O Server SAN connections.

    Go for it.
    #AIX-Forum


  • 3.  Re: AIX SDD & MPIO Comparison (Pros and Cons)

    Posted Thu March 09, 2006 11:52 PM

    Originally posted by: SystemAdmin


    How about bandwidth aggregation. I'm not sure if this is a dumb question but in MPIO setting is there any support for the avalable bandwidth aggregation on available paths? Please shed some light on this issue.
    #AIX-Forum


  • 4.  Re: AIX SDD & MPIO Comparison (Pros and Cons)

    Posted Fri March 17, 2006 02:41 PM

    Originally posted by: dannert


    I assume you mean "load balancing". With IBM disk storage - and that's what you are probably connected to if you run SDD now - MPIO supports load balancing (round robin) over all paths to a LUN.
    #AIX-Forum


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