{"id":185,"date":"2009-02-24T16:46:49","date_gmt":"2009-02-24T05:46:49","guid":{"rendered":"http:\/\/nsrd.wordpress.com\/?p=185"},"modified":"2009-02-24T16:46:49","modified_gmt":"2009-02-24T05:46:49","slug":"traps-when-upgrading-from-73x-to-74x-cdi","status":"publish","type":"post","link":"https:\/\/nsrd.info\/blog\/2009\/02\/24\/traps-when-upgrading-from-73x-to-74x-cdi\/","title":{"rendered":"Traps when upgrading from 7.3.x to 7.4.x &#8211; CDI"},"content":{"rendered":"<p>I&#8217;ve had a few customers in the last few days now upgrade from NetWorker 7.3.x to 7.4.x, and the most common issue that seems to be coming up is a failure in CDI. The scenario is that tape drives become effectively unusable, and whenever an attempt is made to use the drives, an error along the lines of the following comes up:<\/p>\n<p><em>nsrd media alert: device <strong>deviceName<\/strong>: serial number mismatch, check system device ordering. Expected&#8230;<\/em><\/p>\n<p>or:<\/p>\n<p><em>nsrd media warning: <strong>deviceName<\/strong> reading: read open error: command completed successfully (drive status is &#8230; The drive serial number has changed)<\/em><\/p>\n<p>The first thing to do when you get this error, it seems, is to check the status of CDI. If you had CDI turned on (i.e., set to &#8220;SCSI Commands&#8221;), turn it off for every tape device and then test again. That will usually do the trick.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve had a few customers in the last few days now upgrade from NetWorker 7.3.x to 7.4.x, and the 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