Hello,
We have an Isilon cluster for primary storage for CIFS and NFS clients. We back it up to tape and disk libraries using 3-way ndmp. Incremental backups can be very large from time to time, so large that it seems like it might be backing up files that have not really changed. For example the current backup has transfered 1.7 million files. It seems unlikely that 1.7 million files have changed in the last 24 hours since the previous incremental (daily).
So the questions I have are -
- How are files selected for incremental backup and is there a way to modify/control it?
- Is there a way to get a report on what files were backed up in a given job and what changed in the file that caused it to be backed up?
Thanks,
Ron