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Table | Suspend Types | |
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Suspend Type | Applies to | Description |
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Secondary | Primary data | The user suspended the pair from the primary storage system or |
data volume | volume, secondary | secondary storage system using the secondary data volume option. |
by operator | data volume |
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By MCU | Secondary data | The secondary storage system received a request from the primary storage |
| volume | system to suspend the volume pair. The primary data volume suspend |
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| type is Primary data volume by Operator or Secondary data volume by |
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| Operator. |
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By RCU | Primary data | The primary storage system detected an error condition at the secondary |
| volume | storage system which caused the primary storage system to suspend the |
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| URz volume pair. The secondary data volume suspend type is By MCU. |
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Delete Pair to | Primary data | The primary storage system detected that the secondary data volume |
RCU | volume | status changed to simplex because the user released the pair from the |
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| secondary storage system. The pair cannot be resumed because the |
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| secondary data volume does not have the suspended status. |
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Secondary | Primary data | The primary storage system detected an error during communication with |
Data Volume | volume | the secondary storage system or an I/O error during update copy. In this |
Failure |
| case, the secondary data volume suspend type is usually By MCU. |
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MCU IMPL | Primary data | The primary storage system could not find valid control information in its |
| volume, secondary | nonvolatile memory during the IMPL procedure. This condition occurs only |
| data volume | if the primary storage system is completely without power for more than |
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| 48 hours (e.g., power failure and fully discharged backup batteries). |
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Initial Copy | Primary data | The volume pair was suspended before the initial copy operation was |
failed | volume, secondary | complete. The data on the secondary data volume is not identical to the |
| data volume | data on the primary data volume. |
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JNL Cache | Primary data | The data volume pair was suspended because it was highly likely that |
Overflow | volume, secondary | journal data will overflow. |
| data volume |
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MCU P/S OFF | Secondary data | The primary storage system is powered off. |
| volume |
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Table | Consistency Status for Suspended URz Secondary Data | |
| Volumes |
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Consistency Status
Volume
Description
This URz volume pair was suspended alone. Update sequence consistency between this secondary data volume and other secondary data volumes in this journal group is not ensured. This secondary data volume cannot be used for disaster recovery at the secondary system. This status is indicated when:
–This volume pair was suspended by a
–This volume pair was suspended due to a failure that did not affect the entire consistency group, and the Error Level pair option for this pair is set to Volume.
Chapter 2 About Universal Replicator Operations |