Dose 1G NIC support VSAN?

[SamZhangjiande]

I got below link:

http://partnerweb.vmware.com/programs/vsan/Virtual%20SAN%20Hardware%20Quick%20Start%20Guide.pdf

It seems ok to use 1G NICs.

Does anybody using 1G NIC for VSAN? Does your VSAN work well?

[vpradeep01 · Accepted solution]

Hello,

Yes, you may use but there will always be bandwidth limitations associated with it. 

vSAN traffic does support 1G but ONLY on Hybrid cluster and 10 G networks are recommended in All flash clusters.

If your cluster is a Hybrid, please make sure you dedicate this 1G NIC for vSAN kernel only.

Refer:

https://storagehub.vmware.com/export_to_pdf/vmware-r-vsan-tm-network-design

Thanks

[TheBobkin]

Hello SamZhangjiande​,

@ vpradeep01​: Actually 10Gbps networking is required for All-Flash implementations, not just 'recommended' as you suggested.

This document sums it up in a few short lines:

Networking Requirements for vSAN

Bob

[SamZhangjiande]

Thank you TheBobkin.

I have 12 servers with HDD, 4/2 1G NICs. And those servers have no 10G NIC. So the only option for me is using 1G X 2 NICs.

I will add one SSD for each server.

Do you see any problem for my solution?

[SamZhangjiande]

Hybrid cluster  and  All flash clusters.

Does Hybrid cluster mean HDD + SSD?  And all flash cluster mean all disk are SSD ?

[TheBobkin]

Hello SamZhangjiande​

"Does Hybrid cluster mean HDD + SSD?  And all flash cluster mean all disk are SSD ?"

Correct.

"Do you see any problem for my solution?"

1Gbps networking is unlikely to be the main bottleneck in a Hybrid implementation and is supported (though obviously YMMV depending on the workload and the hardware).

Bob