We normally see good performance (what I expect from nfs, 10GB connection and 6x LTO7 drives).
But currently I am at 168 hours, 108,989,304 kilobytes backed up.
I've checked network, media server, robot, and nas storage. All are opereating normally and optimally. When I try rsyncing files off I'm seeing speed I would normally expect.
But in terms of netbackup I have no idea where to even start looking to see the issue. I mean backing up at like 185KB/s seems completely ridiculous.
There was another post recently where backup over NFS was very slow.
You will see that I suggested to use tar as a test to simulate the NBU backup process (without actually using NBU).
The OP solved the problem by changing the mount options on the master/media server.
How fast is it if you just copy some files from the NFS share to the local file system o the media server ?
Additionally, make a small backup from the NFS share, just enough to watch it go slowly for say 10 - 15 mins - then when the backup complates, look in the Details Status of the job for the lines that look like:
bptm waited xx times, delayed yy times
I have had similar issues with backups where the total was not too outrageous, but the details were significant.
180TB is not an issue, 15,825,579 files is not an issue - BUT
If 160TB is one file, and the remaining 20TB was in 15,825,578 files that were all in one directory - you would experience this type performance.
I know my isilon support had some tools to scan directory structures looking for anomalies - it could be a single directory with tonnes of files in it...