Den ons 17 mars 2021 kl 02:04 skrev Tony Liu <tonyliu0592@xxxxxxxxxxx>: > What's the purpose of "cluster" network, simply increasing total > bandwidth or for some isolations? Not having client traffic (that only occurs on the public network) fight over bandwidth with OSD<->OSD traffic (replication and recovery). Now, this wasn't as much of an issue, which is why most have stopped recommending split networks and just go with bonding the interfaces and let the side that currently needs a lot of BW get it. > For example, > 1 network on 1 bonding with 2 x 40GB ports > vs. > 2 networks on 2 bonding each with 2 x 20GB ports > > They have the same total bandwidth 80GB, so they will support > the same performance, right? Depending on how the bonding is done, the latter will never have any single tcp stream go past 20Gbit ever, but will support several parallel streams to different destinations together be more than 20Gbit. Also, faster ethernet has slightly smaller latencies so 1x100 would have less latency than 4x25 and so on. Not always this simple, but in general. -- May the most significant bit of your life be positive. _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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