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Backup failed

Posted on 2012-03-30
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Last Modified: 2012-04-26
I have the maintenance plan  for the daily full backup and log backup . It has  failed for last two days. the error in the logs shows the following message

BackupDiskFile::CreateMedia: Backup device '\\mnsql01\sqlbackups\mnncdbprod01\full\rgsdyn_backup_2012_03_29_201531_3880704.bak' failed to create. Operating system error 86(The specified network password is not correct.).

I don;t know anything has changed (at least one body informed me). Can you suggest what should i do . How to fix the issue so that it won;t fail today?

Thanks
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Question by:manojbaba
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Expert Comment

by:Casey Herman
ID: 37787903
Not sure what backup system you are using but it looks like the service account for that backup is either locked or the password has changed.

Casey
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Expert Comment

by:pclinuxguru
ID: 37787947
Last time I saw an error like that our NAS's computer account had to be re-added to AD because it wasn't authenticating properly.

You can try going to:
\\mnsql01\sqlbackups\mnncdbprod01\full\

from the SQL server and see if you can access the folder.
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Author Comment

by:manojbaba
ID: 37788002
Thanks Casey,

The account that runs the services is dedicated domain  service account . and when i  check the account properties it  is not locked. I am not sure whether someone changed the password or not but most probably not because it is used by all the services..

Suppose if the  password  were changed does it affect the backup process. ?
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Author Comment

by:manojbaba
ID: 37788125
Thanks pclinuxguru,

I can access the folder from the sql server machine.but I am using my domain account to access the  \\mnsql01\sqlbackups\mnncdbprod01\full\ folder.

 And the other backup jobs  from different  sql server with different service account is also working  to the  same NAS  location , I don;t why it is failing.  

If we re add NAS's computer account had to AD  don;t it affect the other process currently running.

Thanks
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Expert Comment

by:pclinuxguru
ID: 37788182
More than likely. If it works from other places then something else is wrong.

In SQL Studio do you have anything under backup Devices?
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Author Comment

by:manojbaba
ID: 37788232
there is nothing under backup Devices.
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Accepted Solution

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Casey Herman earned 500 total points
ID: 37789020
You will get a login error like above.  Depending on how locked down your service account is you can test it by creating a simple scheduled task to open notpad or something with the known password and see if the job runs. If it doesnt than the password has been changed.  Also you should check to see if password policies are allowed to affect that account.  If you are 100% sure what the password should be you can reset the password to the known password again and it should work.

Casey
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Author Comment

by:manojbaba
ID: 37803729
Thanks casedog21

Sorry, I was on vacation for few days . The jobs is still failing. I changed the owner of job to sql server agent account and  I also changed the ownersid  of sysssispackages as well in according to new account. this doesn't help.

Then I tried to create the new maintenance plan  with one backup job? but it also failed.

When i see the security of the NAS folder( \\mnsql01\sqlbackups\mnncdbprod01)  all the account i used has full control permission. I don;t know what wrong with this server.


Thanks


I am going to check in reply soon and I will add that too soon.
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Author Comment

by:manojbaba
ID: 37803785
I tried  with what you said it opens the notepad file.
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Author Comment

by:manojbaba
ID: 37816683
The problem hasn't solved yet when  the check the permission on the shared folder in the NAS server. the service account used by sql server agent has full permission  and i run the job by same account.

I even tried to run the simple backup job from the query editor  using same and  different account separately having read/writhe permission on the  NAS folder and sysadmin right in the sql server gives the same error.

Cannot open backup device ''\\mnsql01\sqlbackups\mnncdbprod01\full'. Operating system error 1326(Logon failure: unknown user name or bad password.).
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Author Comment

by:manojbaba
ID: 37825230
The problem is solved there the service account password was changed,
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