DELL MD3220 사용자 설명서

Troubleshooting: Your Storage Array Software

An unidentified node or device occurs when MDSM 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.

Before beginning any recovery procedure, make sure that the host context 

agent software is installed and running. If you started the host before the host was 

connected to the storage array, the host context agent software is not able to find 

the storage array. If so, make sure that the connections are tight, and restart the 

host context 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. 

To recover from an unidentified storage array:

1 Make sure that the network connection to the storage management station 

is operating. 

2 Make sure that the controllers are installed and that the power is turned on 

to the storage array. Correct any existing problems before continuing. 

3 If you have an in-band storage array, use the following procedure. Click 

Refresh after each step to check the results: 

Make sure that the host context 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 context agent software is not 

able to find the controllers. If so, make sure that the connections are 

tight, and restart the host context agent software. 

book.book  Page 236  Monday, June 21, 2010  11:00 AM