Topic
2 replies Latest Post - ‏2013-07-19T20:58:25Z by chriscanto
TMasteen
TMasteen
260 Posts
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Pinned topic Q:SVC configuration limit I/O group

‏2013-07-19T19:56:29Z |

In IBM v7.1 limits there are some properties I dont understand;

Host objects (IDs) per I/O group : 512

Fibre Channel hosts per I/O group : 512

Can someone tell me what the difference is?

Thanks.

  • AndersLorensen
    AndersLorensen
    139 Posts
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    Re: Q:SVC configuration limit I/O group

    ‏2013-07-19T20:32:32Z  in response to TMasteen

    I guess Host objects can be iSCSI?

     

    --

    Anders

     

    • chriscanto
      chriscanto
      229 Posts
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      Re: Q:SVC configuration limit I/O group

      ‏2013-07-19T20:58:25Z  in response to AndersLorensen

      Yep, this structure/wording on the limits page comes from a time when the maximum number of iSCSI hosts that were supported for an I/O group (and therefore cluster/system) was less than the equivalent fibre channel limits.  The numbers have now caught up, but the structure for that limits table has remained in place.

      One thing that caught my eye on that page was the asterisk next to the "1024*" value for "Host objects (IDs) per system" limit.  It seems odd that any caveats aren't mentioned in the comments cell to the right.... and scrolling down the list the only thing I could see that had an asterisk next to it was:

      "* This limit is 512 for Solaris OS",

      which makes no sense for that limit.    (However, I can believe it's the sort of thing that might go next to the "Volumemappings per host object" limit, or similar.....)

      Anyone know what's going on there?