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Slow backup performance

I need a solution

Hi

 

We have extremely slow performance in our new netbackup environment. It cannot do more than 8mb/sec. We don't have many clients running backups on this except few NDMP shares and nbu servers backing up itself.

Here is the info about our environment

Netbackup 7.5

OS : linux 6.2

Data domain

1 master and 2 media servers.

NDMP shares are direct attached to tape drives.

Filer: Sun7410.

We have mounted nfs filesystem from data domain on media server and tried copying 2 GB file and it works fine.

Physically mounted a tape using robtest and tried dd command to send the data to tape and that works great as well.

Tried copying tar files using scp between nbu servers, that is good also.

The network team said everything is good from switch point of view.

I am clueless whereelse to look. The server network settings seems to be good also.

Both san (ndmp) and networks backups gives the same performance which is even more confusing. Any help would be appreciated.

 

Thanks

Sai


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