Software-based VM-centric and flash-friendly VM storage + free version
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buzzzo
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Fri Aug 08, 2025 8:10 am
I'm sure this question was already made in the past over and over again but I cannot search in the forum so sadly i need to re-done it.
Speaking about replication links in vsan: Does two nics dedicated to replication effectly double the replication bandwith ? or it is used only for redundancy ?
eg: havind 2 1gb nics resulting in 2gbit replication speed or just 1 gbit for the active link ?
Thx
Last edited by
buzzzo on Fri Aug 08, 2025 9:56 am, edited 1 time in total.
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yaroslav (staff)
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Fri Aug 08, 2025 8:34 am
They are there only for redundancy.
StarWind VSAN does not use any form of teaming. We generally try to stay away from teaming due to possible overhead and service starting later than VSAN in Windows. I also ran into a situation where a standby adapter was doing nothing after the main adapter failure.
The only possible use of teaming in ESXi would be combining adapters of different bandwidth, e.g., 10 GBE and 1 GBE. 10 GBE is the main carrier, while 1 GBE link is there to pick up the slack after 10 GBE link failure.
That's why we recommend using two independent links if you need redundancy.
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buzzzo
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Fri Aug 08, 2025 9:48 am
Thx for your answer.
So just using an lacp teaming and passing it as virtual interface to cvm controllers as replication link just not "transparently" load balancing the traffic on the two links ?
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buzzzo
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Fri Aug 08, 2025 10:07 am
For iscsi i'm agree: there is multipath for failover and load balancing.
I'm just asking if for replication links the native load balancing done by a lacp works.
Thx
Last edited by
buzzzo on Fri Aug 08, 2025 10:12 am, edited 1 time in total.
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buzzzo
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Fri Aug 08, 2025 10:14 am
yaroslav (staff) wrote: ↑Fri Aug 08, 2025 10:10 am
Replication links work in round-robin and are balanced by VSAN.
So you are saying that the vsan process, in presence of multiple replication links, would use ALL of them in a round robin fashion effectively doing load balancing.
Have i understood correctly ?
Thx
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buzzzo
- Posts: 24
- Joined: Wed Jan 20, 2016 6:39 pm
