Table 1 compares the different options of the XADDPAIR ERRORLEVEL parameter and describes how different system failures affect the suspension of XRC volume pairs. "Active volumes" refers to volumes that are not in suspended state.
| ERRORLEVEL option | Single volume failure | Primary storage control failure | System data mover failure |
|---|---|---|---|
| (Volume) | One active volume pair is suspended. | All active volumes associated with the storage control session are suspended. | All active volume pairs in the session are suspended. |
| (Session) | All active volume pairs in the storage control session are suspended. If the session is coupled, all volumes in all other coupled sessions associated with the same master session are also suspended. | All active volumes in the storage control session are suspended. If the session is coupled, all volumes in all other coupled sessions associated with the same master session are also suspended. | All active volume pairs in the XRC session are suspended. If the session is coupled, all volumes in all other coupled sessions associated with the same master session are also suspended. |
| (group_name) | All active volume pairs in the group are suspended. | All active volumes on the storage control are suspended, and all active volumes in this group on any storage control are suspended. See Note. | All active volume pairs in the XRC session are suspended. |
Note: A primary storage control error suspends all XRC volumes
that are attached to it. If any volumes on that storage control belong
to an XRC named group, those volume groups become suspended on other
storage controls.
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