Walid Hegazy

How To Do :) IT

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DPM 2012 Tape Erase is taking TOO LONG !!!

last week I faced this issue while I was erasing tape on IBM Tape library from DPM Console so it moved to the Drive and 


 Erasing …. Erasing……Erasing …. Erasing   for more than 2 hours



after some research I found out that there are two types of erase ,long and short Smile


Though short erase is much faster than long erase, it does not completely erase the data from the tape “Only mark it as free”. If you have a policy that all data from the tape must be erased and unrecoverable, do not enable short erase.By default, when you erase a tape by using System Center Data Protection Manager (DPM) , DPM performs a long erase.


Enabling Short Erase

First make sure that your tape drive supports short erase, then you can enable it on the DPM server by creating the DWORD UseShortErase under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Data Protection Manager\Agent.



Set the value of the DWORD to 00000000.

After this value is set, all erase operations on the DPM server will be short erases.


To revert to long erases, remove this registry key.



Hope this was helpful ….Thanks for reading


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SCCM 2012 R2 – OSD Task Sequence Error Code 0x80091007

I had this error while trying OS deployment at one of the branch sites last week, I didn’t have any one to get the logs from there “will do future post for that” so I started searching for that Error code it means issue with the hash value .


here is a check list followed in tis order:

1)  remove and re-distribute the content, or create the packages again.

2)Make sure there is no hidden file within any of the package source folders.

3)Make sure enable binary differential compression is enabled


4)last but not least , Changing the memory on the computer fixed the issue (it can be caused if there is RAM Fault ) if you have this issue with few number of machines try this firrst.