Tape details when it was backed up in December 2014. 

Location            : Slot-20
MediaLabel          : Database Backup (Half Yearly | Tape) -00000002
LibraryName         : Hewlett Packard MSL G3 Series library  (x64 based)
TapeBarcode         : XXXXXX
IsOffsiteReady      : True
ProtectionGroupName : Database Backup (Half Yearly | Tape)

I used '|' in protection group name, when I check below MS KB blog I came to know that special characters aren't allowed. So now tape barcode is readable but its showing unrecognized. Is there any way to restore data ?

http://blogs.technet.com/b/dpm/archive/2010/06/07/dpm-2007-tapes-are-labeled-as-unrecognized-after-just-previously-writing-to-them-and-removing-them-from-the-library.aspx

• Edited by Vijay MC Monday, May 18, 2015 11:08 PM

None of these worked for me. I think DPM team identified this as bug but hasn't provided fix yet. 

If DPM isn't recognizing tapes with special characters names then why its allowing user to use special character in protection group name while creation !

• Edited by Vijay MC Tuesday, May 19, 2015 6:42 PM

Hi,

I checked the issue with related team and you may not able to recover data from that Tape as it is unrecognized now.

The reason why we could create the protection group with |, is that it is accepted as a group name, but means a "separate" mark. See this article:

http://blogs.technet.com/b/dpm/archive/2010/06/07/dpm-2007-tapes-are-labeled-as-unrecognized-after-just-previously-writing-to-them-and-removing-them-from-the-library.aspx

In your case "Half Year" and "Tape" are considered as 2 elements because of the | so neither of them is recognized in media labor.