01-26-2018 11:16 AM
Hello,
We have netbackup 7.1 which is connected to Data domain with VTL configuration. Tapes are not expiring after the retention and due to that Data domain is not able to receover the space after cleaning process.
Last week we did quick erase of scratch tapes on Netabckup and after that VTL tapes in DD expired and moved to 0 % usage. Even i can see the cleanble space on DD increased . But after the cleaning is completed none of the space was recovered.
Do i need to perform anything from the Netbackup end to cleanup the space..Kindly suggest
01-26-2018 12:04 PM
Hello,
Please help on the below question.
01-26-2018 11:16 PM
NBU does not perform DD file system cleaning, reach out to EMC and ask them to have a look
01-27-2018 01:25 AM
01-27-2018 08:14 AM
01-29-2018 02:06 AM
Amol_Nair is right
When using Data Domain in a non-tape configuration, every expired backup result in Netbackup active deleting files in a backup image. When files are deleted a Data Domain can reclaim the space.
However when data domain is used as a VTL, data remain on disk because a expiration of data on tape is just a Netbackup catalog update, no information is send to data domain that contents of the tape is no longer needed. A label operation on scratch tapes will release space since this is a re-initializations of the tape.
02-01-2018 05:04 AM
The links that I have posted in my previous post confirms what everyone else has said here.
You will also find examples of bplabel commands and scripts that will in essence perform a 'quick erase' in order to reclaim space on the VTL.