Hi
Problem trying to solve : Backing up a growing 15 TB NetAPP CIFS share volume volume that already contains 100 million files, its taking ~ six days.
Currently backup throughput for remote NDMP is very slow ~20 MB/s, my NetApp buddies say they would expect this given the large number of files in the volume plus direct NDMP to local attached tape drives will not help. Backups are to DDBOOST enable Data Domain kit, tape are out of the question as thew backup is too slow.
Looking at the prospect of using NBU Accelerator to speeds things up by:
- Mounting the CIFS share on media server
- Setting up a NBU Accelerator policy to back this up.
Problems & Assumptions
Usually when I have encountered large volumes with squillions of files on an NDMP mount on boxes found it better to do an NDMP backup because regular filesystem backups can timeout. Spent a lot of time tuning systems for regular backups only to have them repeatedly fail due to timeouts because on directories that contain a huge number of files. This may exclude the use of NBU Accelerator.
I am assuming that mounting the CIFS volume on media can be read-only and will have no impact on the functionality of NBU Accelerator. I could see info on this in the manual and other sources like - Frequently Asked Questions on NetBackup Accelerator Part II
There is no mention of Accelerator in the NetApp Replication Manager plug-in guide. So it appears the plug-in is not relevant.