Hello Community,

i am planning a cloudstack hyperconverged cluster with Ceph as primary and 
secondary storage.

I already know that snapshots, volume backups and images are transferred via 
secondary storage interface, but I have problems in understanding the correct 
flow.

Maybe someone can explain it to me , because i need to understand which loads 
are transferred via secondary to size the interface correctly.

In my setup I ve 2x nics with each 2x 100Gbits ports for eph cluster network 
and public network. So in sum Ceph has 400Gbits on each host. So now the 
documentation says that cloudstack will transfer snapshots/images/backups via 
secondary storage. But I don't get it because the data is hosted by ceph and 
ceph has a capability of 400Gbit. So when I for example use 30Gbits for 
secondary storage will this limitate snapshots/images/backups to 30Gbits? Or 
does it mean that cloudstack use the secondary storage network for management 
things, but the data are still transferred by ceph?

BR
Reza

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