systimax
Contributor
Contributor

Expected Win SMB transfer speed 2 Nics MPIO RR Vmware fixed VM to VM

Hello all,

I have a number of esx boxs that that point to our storage target. Its a ISCSI SSD Hybrid SAN via a 10GB connection. We are using MPIO and RR. (its all set up correclty)

Each ESX host has 2 1GB nics for ISCSI and 2 1GB Nics for LAN traffic.

When we try to do real life file copies of large ISOs of 5 GB between Win2008r2 boxes we can only get max 60MB/s (even when VMs are on same host)

When a physical win2008r2 box copies the same ISO to a VM we can get around 110 MB/s

Why is there such a difference? Is this expected? Where can i look to troubleshoot?

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1 Reply
SG1234
Enthusiast
Enthusiast

whats the nic driver that is in use ? is it possible to give esxtop o/p while the copy is going on

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