Use the snapshotcachesize option to specify an appropriate size to create the snapshot.
The size estimation is needed for storing the original data blocks for modified and deleted data for the point in time when the snapshot was taken.
For snapshot-based file backup or archive, use the snapshotcachesize option with the include.fs option, or in the server stanza in the dsm.sys file.
For snapshot-based image backups, use the snapshotcachesize option with the backup image command, the include.image option, or in your dsm.sys file.
This option is valid for AIX® and Linux clients only. The Tivoli® Storage Manager client API does not support this option. The server can also define this option.
Place this option in the server stanza in the dsm.sys file. You can set this option on the Image-Snapshot tab of the Preferences editor.
snapshotcachesize 95
AIX only: include.fs /kalafs1
snapshotproviderfs=JFS2 snapshotcachesize=95
AIX only: include.image /kalafs2
snapshotcachesize=95
Linux only: include.image /linuxfs1
snapshotcachesize=100