Dell PowerVault NX3610 User Manual - Page 92
Troubleshooting Backup Issues, Troubleshooting Snapshots, Troubleshooting An NDMP Internal Error
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Workaround • If Java script is disabled, enable Java script. For information about enabling Java script, see the browser's help. • If IE SEC is enabled, disable it. Troubleshooting Backup Issues Troubleshooting Snapshots Description Cause Workaround Taking and deleting snapshots fail. Probable causes may be: • There are many client I/O requests waiting to be serviced, including a request to remove a large directory. • There are many snapshot creation/deletion requests being currently processed. • Another snapshot request for the volume is currently being executed. • The total number of snapshots reached the system limit. • Wrong IP address was specified in the backup job. • For a manual request failure, retry taking or deleting the snapshot after a minute or two. • If the request originated from the snapshot scheduler, wait another cycle or two. If the failure persists, try taking or deleting the snapshot manually on the same volume. • Check the dashboard if the system is under heavy workload. If the system is under a heavy workload, wait until the workload decreases and reissue the snapshot request. • Check the snapshot schedule. A very dense snapshot schedule has a negative impact on the overall performance of the system. The accumulated snapshot rate must not exceed 20 snapshots per hour per system. • Check the total number of snapshots in the system. If the number is in thousands, delete a few snapshots and retry. • Ensure the Client virtual IP address is specified in the backup job. Troubleshooting An NDMP Internal Error Description Cause Backup or restore fails with an internal error. NDMP internal errors are indicators of a file system not being accessible or a NAS volume not being available. 92