If you are configuring your Tivoli® Storage Manager AIX® client to perform snapshot-based file backups
and archives, there are some items that you need to consider.
- Ensure that the volume group containing the file system to be
snapshot has sufficient disk space to allow JFS2 external snapshots
to be created for the file system.
- Tivoli Storage Manager
is using a default size of 100 percent of the file system size for
the snapshot size. This value was found to be most appropriate for
file systems with even moderate file system activity. If you need
to lower this value based on your experience with your own file system
activity, you can use the snapshotcachesize option
to fine-tune this value.
- Do not enable internal snapshots when creating new JFS2 file systems
on AIX 6.1 or later for all
file systems managed by Tivoli Storage
Manager. Tivoli Storage Manager
uses external snapshots and JFS2 does not allow the creation of external
and internal snapshots concurrently for the same file system.
