Dell PowerVault NX3500 Administrator's Guide - Page 180

Troubleshooting System Shutdown Description Cause Workaround During a system shutdown using the NAS Manager, the system does not stop and the controllers shutdown after 20 minutes. The system shutdown procedure is comprises of two separate processes: • Stopping the file system • Powering down the PowerVault NX3500 controllers The file system may take a long time to clean the cache to the storage either due to lot of data, or due to an intermittent connection to the storage. During the powering down stage, the issue could be due to the OS /kernel hanging on the controller or failing to sync its state to the local drive. If the file system has stopped and if one of the controllers are still up you can physically power down the controller using the power button. If file system has not stopped, you must let it continue working. The file system reaches a 10 minute timeout, flushes its cache to the local controllers, and continues the shutdown process. 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. 180 Troubleshooting