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13036: Improving z/OS I/O Resiliency

Wednesday, February 6, 2013: 3:00 PM-4:00 PM
Imperial A, Ballroom Level (San Francisco Hilton)
Speaker: Dale F. Riedy(IBM Corporation)
  • Improving z/OS I/O Resiliency (676.6 kB)
  • A recent health check for I/O was added that allows you to monitor for command response time disparities among paths in a path group.  This allows you to be more pro-active in determining the root cause of elongated response times when one or more paths to your I/O devices are not in line time-wise with the others in the group. 

    A second topic covered here is an improvement in z/OS V1R13 that provides I/O path recovery scoped at the control unit level.  When path related I/O error occurs on paths in a control unit, the I/O supervisor will monitor for trends and take action to remove paths for all devices associated with the control unit when the number of path-related errors exceeds specified thresholds.

    Tracks: Storage and z/OS Systems Programming
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