savefs: Cannot retrieve the client resources

Recently, colleague has issue backing up a new client.  The following errors keep coming up.

90088:savefs: Cannot find the NSR group resource named 'Windows'.
90069:savefs: Cannot retrieve the client resources.

From my exp, these are DNS related error.  Check the Command Reference Guide. The 2nd possibility is client is moved to another group during backup.  I know this is not the case.  Check DNS and both forward and reverse lookup are fine.

Eventually, find out this new box is setup to replace another box.  The new box is setup with a different hostname but the alias is the same.  Compare the client instance between the new and the decommissioned one. Find out the alias is entered in the decommissioned client (if you attempt to enter alias on the newly created client, it should give you an error because you cannot have 2 different hosts with the same alias).

All we do is remove the alias that are used by the newly built box from the decommissioned client's aliases field.  Then enter it on the newly created client's aliases field.  Now, backup runs fine without any more issue.

(Another commonly see DNS related savefs error is "nothing to save".  Check and make sure aliases field include the other name if there is more than one aliases or one NIC on the host)