[ovirt-users] Gluster replication on 1Gb interfaces

Hi all. I understand using 10Gb interfaces when using Gluster is advised for helping with data replication specially in situations where a node went down for a while and need to re-sync data. However can anyone tell if using one 1Gb interface dedicated for it in hosts with 1.8 TB of Raw storage would be still Ok or can it cause severe impact on performance ? What are the chances of a 1Gb nice being saturated during normal operation ? Thanks Fernando