- Posts: 59
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- Joined: Jan 19, 2012 8:53 pm
- Full Name: friedman
Veeam full backups & full replications between all hosts using hotadd is very fast (proxies on each host): averaging 850MB/s+, almost maxing out the 10Gbe switch. Copying files between two Win2k12R2 Virtual machines on different R730 server hosts is similarly fast : averaging 700MB/s+; so we know the SSD's are not a bottleneck. Again, that is MB, not Mb, & that is between hosts.
However, when using Veeam backup's or replication with NBD on the Proxies instead of Hotadd, speeds drop significantly to around 100MB/s; almost as if it is limiting itself. I am assuming when using NBD, the proxies communicate with the host via the esxi "management network"; so given that when we migrate a VM between hosts, we get the same slow speeds (100MB/s), the management network seems to be the bottle neck.
What doesn't make sense is that we only have one vSwitch configured on each host, with dual 10Gbe nics on the vSwitch. So the proxies above, all of the VM's & the the Management network are all on the same vSwitch, on the same 10Gbe physical switch, using the same 10Gbe nics.
I wanted to see if anyone else has a similar setup & can point me in the right direction to removing the management network bottle neck in our environment so we can switch from hotadd to NBD with veeam, as well as faster migration between hosts with vCenter.
- Posts: 224
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- Joined: Apr 30, 2013 7:38 am
- Full Name: Vlad Valeriu Velciu
Tried many things but we couldn't find the cause. So we switched to hot add for large VMS that aren't processed in parallel.
I would like to know what is causing this also.
- Posts: 5
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- Joined: Oct 07, 2014 6:56 am
https://pubs.vmware.com/vsphere-50/inde ... t.5.5.html
- Veeam Software
- Posts: 6042
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- Joined: Jul 26, 2009 3:39 pm
- Full Name: Luca Dell'Oca
- Location: Varese, Italy
Principal EMEA Cloud Architect @ Veeam Software
vExpert 2011 -> 2021
Veeam VMCE #1
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