04-27-2018 09:08 AM
Hi,
we are making virtual machine backups using Veritas NetBackup 8.1 with their integrated VMware backup solution (through VADP) on a Nutanix (VMware vSphere 6.5).
It does’nt make any difference if we are using
We are getting only a maximum of 30MB/s throughput (also against a nulldevice, so, target device or network is not the bottleneck) per backup job.
Of course, this is much too slow, if backing up a single big VM (some TByte).
When running multiple (for instance 10 VM) backups at the same time, the overall throughput increases, but not linearly. In other words: with 10 VMs at the same time we see about 160MB/s, instead of expected 10 times 30MB/s = 300MB/s.
Is there something known about that? Could it be, that there is a limit regarding to a single stream to prevent the storage from heavy load and is there a chance to change that behaviour?
It seems that NBU is not the reason for the issue, but my hope is, that someone already experienced and solved this.
Greetings, Matthias
04-28-2018 10:21 PM