Setting options for an incremental forever backup schedule

When you schedule incremental forever backups, you can ensure that there are frequent backups of the VMs and reduce the size of each backup.

1. Start a backup-archive client command-line session:
   • Open a command prompt and change to the backup-archive client installation directory. For example:

     cd "C:\Program Files\tivoli\tsm\baclient"

   • Open a terminal window and change to the backup-archive client installation directory. For example:

     cd /opt/tivoli/tsm/client/ba/bin

2. Edit the Tivoli® Storage Manager client backup-archive client options file.
   • Specify these options in the dsm.opt options file.
   • Specify these options in the dsm.sys file in the stanza for the data mover node.
   1. Enable compression by adding the option compression yes to the file.
   2. Enable deduplication by adding the option deduplication yes to the file.
   3. Modify the trigger values for megablock refreshes by setting one of the following options:
      • Enable a number of objects as the trigger by adding mbobjrefreshthresh number to the file.
      • Enable a percentage of objects as the trigger by adding mbpctrefreshthresh percentage to the file.
      
      For more information, see the backup-archive client mbobjrefreshthresh and mbpctrefreshthresh options in Client options reference.
3. Repeat Step 2 for each VMware guest.