Unidentified Devices

An unidentified node or device occurs when the MD Storage Manager cannot access a new storage array. Causes for this error include network connection problems, the storage array is turned off, or the storage array does not exist.

NOTE: Before beginning any recovery procedure, make sure that the host-agent software is installed and running. If you started the host before the host was connected to the storage array, the host-agent software will not be able to find the storage array. If so, make sure that the connections are tight, and restart the host- agent software.

If a storage array is managed by using both out-of-band management and in-band management using the same host, a management network connection problem might prevent direct communication with the storage array. However, you might still be able to manage the storage array over the in-band connections. The opposite situation can also occur.

If a storage array is managed through more than one host, it is possible that the storage array might become unresponsive to communication over the connections given by one host. However, you might still be able to manage the storage array over the connections provided by another host.

Recovering from an Unidentified Storage Array

Use the following procedure to recover from an unidentified storage array.

1Make sure that the network connection to the storage management station is operating.

2Make sure that the controllers are installed and that the power is turned on to the storage array. Correct any existing problems before continuing.

3If you have an in-band storage array, use the following procedure. Click Refresh after each step to check the results:

a Make sure that the host-agent software is installed and running. If you started the host before the host was connected to the controllers in the storage array, the host-agent software will not be able to find the controllers. If so, make sure that the connections are tight, and restart the host-agent software.

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Troubleshooting

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Dell Computer Drive manual Unidentified Devices, Recovering from an Unidentified Storage Array

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