NDMP cumulative incremental backups of Netapp
We are backing up large number of NetApp snapshot (SnapVault) through NDMP, for NetApp Filer FAS2040.
Backup selection is : /Vol/volname/.snapshot/daily.o (this is static and same for Full and Cumulative backup in a policy)
We have monitored the backup trends and found that there is very slight difference in Data size for Full & Cumulative Incremental backups
|
Backup Selection |
FULL 26/10/13 |
CUM 28/10/13 |
|
/vol/abcd_esx01/.snapshot/daily.0 |
775 GB |
709 GB |
|
/vol/abcd_esx/.snapshot/daily.0 |
868 GB |
866 GB |
Could someone plese tell me, Why cummulative backup is not taking change from last full...?
See this TN:
http://www.symantec.com/docs/TECH143455
NDMP backups - What triggers an Incremental versus a Full backup ?
and:
http://www.symantec.com/docs/HOWTO85918
NDMP backup levels
