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SYMANTEC USE OF MEDIA ID AND BARCODE

Created: 18 Mar 2012 • Updated: 18 Mar 2012 | 6 comments
This issue has been solved. See solution.

what is the difference between barcode label and media label in NBU?

Cant we use onl barcode?

whats the use of both?

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mph999's picture

A media id is derived from the barcode (usually) and is up to 6 characters.  The media id is 'logical' the barcode physical.

The media id is writen to the volume header at the beginning of the tape and is unique to the tape.  NBU can use this to check if the barcode of the tape has been changed (eg, someone replaces the barcode with a different one).

 

Not all media have barcodes, in which case NBU needs a media id to be able to idenify the tape, hence another reason they are separate.  With non barcoded media, the media id can be specified manually, or the NBU default used.

Martin

 

Regards,  Martin
 
Setting Logs in NetBackup:
http://www.symantec.com/docs/TECH75805
 
NIKHIL2346565959's picture

ok I got it.

So media id is logical name and is used by NBU.

Barcode is physical and is for library.

On media we have both media id and barcode?

mph999's picture

Yes, you understand correctly.  NBU really only uses the media id - the barcode is of course held in the database (EMM) but once the tape has been labelled (the media id is made from the barcode) the media id is used for tape delection /identification.  The only time the barcode is used / referrenced, is when an inventory is run.

Martin

 

Regards,  Martin
 
Setting Logs in NetBackup:
http://www.symantec.com/docs/TECH75805
 
SOLUTION
NIKHIL2346565959's picture

so at the time of inventory,media id is not used?why?