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Celerra and Netbackup – Adding Backup Selections

Recently, I’ve had to set up Symantec Netbackup so that it could backup and restore to my new EMC Celerra environment. The most time consuming part, and the part that you might have to do from time to time is add new backup selections to existing policies.

This isn’t as straight forward as one might hope if you use VDM’s. Now, before I go on, I’m not going to go through the initial NDMP setup. Both EMC and Symantec have good documentation on this. However if you werent the person who initially configured all of this, you may still be tasked with backing up a new share.

First you need to figure out the root vdm that your share sits on, so putty to your celerra control station and run the following command:

nas_server –l –v

This will list all the VDM’s sitting on your Celerra. So the ID is the important part as it makes up the first part of the backup selection. So if the vdm you need to back up has an ID of 16 then the first part of your backup selection becomes:

/root_vdm_16/

Then, you will want to see what file systems are mounted on this VDM. To see this you need to run:

server_mount [name of VDM]

This will give you a list of the file systems and the mount points. Its this mount point that makes up the second part of your backup selection. So if you file system is called homes_fs on /homes_fs_1 then your full backup selection (including vdm from above) would be

/root_vdm_16/homes_fs_1

This is further expandable depending on how you’ve configured your CIFS Shares, but normally you should just be able to follow the path straight to the folder you need to backup, e.g:

/root_vdm_16/homes_fs_1/danoneill/mustbebackedup

As John points out in the comments below… It really is quite simple… One command:

server_df

This lists all the file systems and their VDM’s.