Someone else said something similar yesterday, time for me to fix it...

From: Ziots, Edward [mailto:[email protected]]
Sent: Thursday, October 25, 2012 11:03 AM
To: NT System Admin Issues
Subject: RE: Hyper-V puzzler

True,

And your Linked in Picture looks a little scary :) Like some evil overlord :)

Z

Edward E. Ziots, CISSP, Security +, Network +
Security Engineer
Lifespan Organization
[email protected]<mailto:[email protected]>

From: David Lum [mailto:[email protected]]
Sent: Thursday, October 25, 2012 1:53 PM
To: NT System Admin Issues
Subject: RE: Hyper-V puzzler

Keeps us employed.

From: Ziots, Edward [mailto:[email protected]]
Sent: Thursday, October 25, 2012 10:30 AM
To: NT System Admin Issues
Subject: RE: Hyper-V puzzler

I agree, not knowning more about Hyper-V, just seems weird... but hey that is 
M$ sometimes

Z

Edward E. Ziots, CISSP, Security +, Network +
Security Engineer
Lifespan Organization
[email protected]<mailto:[email protected]>

From: David Lum [mailto:[email protected]]
Sent: Thursday, October 25, 2012 12:47 PM
To: NT System Admin Issues
Subject: RE: Hyper-V puzzler

I don't think it'll matter, as I just tested VM01 --> VM02 and legacy to legacy 
= fast and any combination that doesn't have the legacy adapter = slow

From: Ziots, Edward [mailto:[email protected]]
Sent: Thursday, October 25, 2012 9:29 AM
To: NT System Admin Issues
Subject: RE: Hyper-V puzzler

Did you disable receive-side scaling in Win2k3 on both sides?

Z

Edward E. Ziots, CISSP, Security +, Network +
Security Engineer
Lifespan Organization
[email protected]<mailto:[email protected]>

From: David Lum [mailto:[email protected]]
Sent: Thursday, October 25, 2012 11:48 AM
To: NT System Admin Issues
Subject: Hyper-V puzzler

New 2008 R2 physical server (Called SERVER001) with Hyper-V, three physical 
NIC's (well, six, but three are disconnected).
Two 2008 R2 guests on SERVER001, called VM01 and VM02

SERVER001 uses NIC0
VM01 uses NIC1
VM02 uses NIC02

Other physical server onsite: 2003 SBS server, called 2003Server

Tests:
File Copy from 2003Server --> SERVER001 = FAST
File Copy from 2003 Server --> VM01 or VM02 = SLOW
Change: Assign VM01 NIC to NIC0
Test: File Copy from 2003 Server --> VM01 = SLOW
Change: Add "Legacy Network Adapter" to VM01, assign it to NIC1
Test: File Copy from 2003 Server --> VM01 = FAST

Why would a legacy adapter in 2008 R2 VM be faster than the standard network 
emulation? I have set up other Hyper-V environments and not run into this issue 
before. Google-Fu gives several suggestions that I may go through, but I was 
wondering if anyone else has seen this?
David Lum
Sr. Systems Engineer // NWEATM
Office 503.548.5229 // Cell (voice/text) 503.267.9764


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