proxmox 5 clustering- what bandwith is required?

more important than bandwidth is latency, corosync requires latency < 2ms
 
thank you @dcsapak We're planning a test using OVH vrack, they say it's 'OVH low latency' but no exact figures. Does anyone have any experience of the latency using vrack - within the same datacenter, and between data centres?
 
I've never tested latency in the same datacenter, it would have been very low. Between Strasbourg and Roubaix was about 10ms if I remember correctly.
 
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