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SBS 2008 - Hyper-V - network problems

Occasional Contributor

SBS 2008 - Hyper-V - network problems


We inherited client with Server 2008 Hyper-V, with two VMs (SBS, SQL roles). HP ML350 G6 with service only carepack.
They were configured on "legacy" virtual network adapters and operating only on 100Mbps.
Since then, network was upgraded to 1Gbps and with that, we have updated server drivers and reconfigured adapters to normal/syntethic virtual adapters. Network is operating on 1Gbps, but on VM network connetion counters have only zeros on them, and here and there we experience little connection drops between VMs, even when both VMs are on same virtual switch.

Can You please advise?