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11709: Improving z/OS I/O Resiliency

Tuesday, August 7, 2012: 4:30 PM-5:30 PM
Platinum Ballroom Salon 1 (Anaheim Marriott Hotel)
Speaker: Dale F. Riedy(IBM Corporation)
Handouts
  • Improving z/OS I/O Resiliency (963.2 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: z/OS Systems Programming
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