The storage director cannot successfully update the primary or secondary device of a duplex pair. The system may issue this message as a result of improper procedures.
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Processing will continue in suspended duplex mode.
The system issues this message because of a hardware error. Follow your installation's procedures for reporting this error. If the device associated with this message is attached via the IBM® 3990 Model 3 or Model 6 Storage Control, see IBM 3990/9390 Operations and Recovery Guide for detailed recovery actions.
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