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bphillips1

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18 years ago

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bphillips1

12 Posts

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677

March 30th, 2009 12:00

Load Balancing HBAs

Hello all,

I know Powerpath gives us the ability to load balance between 2 HBA cards. But, can we do the same thing with 4 cards? How about 8? Is there a limit on powerpath and load balancing between HBA cards?
  • cosse

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    Posted March 30th, 2009 13:00

    The EMC PowerPath Product Guide shows the use of 4 cards and I have used 8 cards before (as long as they are all the same cards) I am not sure what the upward limit is but I have heard of people using 32 cards before on very large systems. How many did you want to use?

    "PowerPath Product Guide 5.2 and 5.3 A05"
  • cosse

    26 Posts

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    Posted March 30th, 2009 13:00

    According to my very smart EMC² TC, the limit is 32 Ports. So 32 single port HBA's, 16 dual port HBAs... you get the idea.

    Message was edited by:
    cosse
  • Conor

    341 Posts

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    Posted March 31st, 2009 03:00

    PowerPath's limit is 32 PATHS, this could be achieved with as few as two HBA's depending on how many different FA ports you wish to map the devices though.

    Conor
  • Allen Ward

    6 Operator

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    2124 Posts

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    Posted April 13th, 2009 09:00

    Hmmm... is this a hard limit on the total number of paths, or on the number of paths it can track for a single device?

    Not that I really want to do this, but just wondering if you had storage allocated from two arrays could you track 32 paths to devices on each array?
  • cosse

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    Posted April 13th, 2009 10:00

    I believe that this is a limit to the number of paths to a single device. Powerpath can manage in the thousands of total paths to seperate devices, I believe 4096 is the total path limit.