PowerMax 2500 and 8500: Mainframe Ficon directors may take exceptions during FDRDSF Restore operation.
Summary: A customer might report that a mainframe system stopped responding and requiring an IPL of an LPar.
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Symptoms
Ficon directors take software exceptions.
Customer reports mainframe Logical Partition (LPar) stops responding.
Customer reports mainframe Logical Partition (LPar) stops responding.
Cause
PowerMaxOS issue
A format write to a new record may cause an exception in the Ficon (EF) microcode. This exception creates an exception IML and the paths to the Ficon channel are temporarily unavailable.
This has been observed when running restores from FDRDSF to a Dataset.
A format write to a new record may cause an exception in the Ficon (EF) microcode. This exception creates an exception IML and the paths to the Ficon channel are temporarily unavailable.
This has been observed when running restores from FDRDSF to a Dataset.
Resolution
PowerMaxOS enhancement PMOS-57583 addresses this issue. If you believe you have encountered this issue, contact the Support Center for assistance and quote this article ID.
Temporary Workaround:
Suspend doing an FDRDSF restore operation.
Temporary Workaround:
Suspend doing an FDRDSF restore operation.
Affected Products
PowerMax 2500, PowerMax 8500Article Properties
Article Number: 000213289
Article Type: Solution
Last Modified: 17 أيار 2026
Version: 5
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