Hi Everyone
I am running Windows 2012 Server and using it for storing VEEAM backups of our VMware environment, and well as a lot of SQL database backups
Deduplication has been running well for the past couple of months (about 35Tb saved), but the performance seems to be getting worse and worse and it is now struggling to keep up with the rate at which new data is added
Checking task and resource manager it doesn't appear that the fdsmhost.exe is really doing much work at all. I see long periods of complete inactivity with no disk access which is not really what I would expect. The files deduped and dedup savings are not changing either
Does anyone have any good information about factors affecting dedup performance. I've tried manually starting the dedup job with the priority and memory usage parameters to force it to high priority and give it a decent amount of memory but still no joy
We have recently added some more VMs to our setup so some of the backup files are very large (around 1.6Tb). is it likely to just be struggling with these large files?
Any clues or best practices?
Thanks
Harley