I have two sites with FAS2552 8.3.1P1, NFS 4.1, VMware 6. I do have the SSD cache and all SAS disks in the FAS2552s. My backup speeds are very good. Doing a full backup I see between 200 – 500 MBS. I have seen as little as 70 meg running backups during the day but the bottle neck was the destination. When I changed CBT off because of VM 6 bug I would see reads at 700 MPS. Which was mostly reads. I have 10 gig using Nexus 3K switches. My numbers were so different that I felt I needed to post. I even have some volumes with dedupe and compression on.
posted this last year in threadvmware-vsphere-f24/netapp-backup-performance-t26635.html
I didnt add that I use all 10g "ethernet", which is most likly why my numbers were way different.
Info to add to lightsout
these numbers are when doing full or new backups. The more data the better the numbers.
Busy source moves around even inside same jobs different VMs. Source 75, proxy 53 network 47 target 31 then Source 33 proxy 94 Network 9 target 15 - numbers never stay the same. Most times source is the highest.