Solved

Poor I/O from new VMs where Hyper-V Host is okay

Posted on 2014-02-15
3
495 Views
Last Modified: 2014-11-12
Hi,

I have a newly installed Server 2012 R2 on a HP ML 350p G8 server.
Hyper-V Role installed and configured with two VMs on it.

The VMs are Running 2012R2 Gen2 VM and 2008R2 Gen1 VM.

All VMs and Host have their own dedicated NIC.

All default NIC settings. RSS enabled etc...

On the 2012 R2 VM I am copying files from an 2003 R2 physical server, but the transfer speed is horrendous, where the same files from the 2003 R2 server copied must faster to the host.

No cluster involved, Gig switch on the LAN,

The same issues on the 2008 R2.

Built a second 20012R2 VM but no difference.

Can anyone guide me on this please?


-GNS
0
Comment
Question by:ggntt
  • 2
3 Comments
 

Accepted Solution

by:
ggntt earned 0 total points
ID: 39861236
UPDATE:

I destroyed the V-NICs and created them again this time enabling I/O-SRV and again under the VM settings on the v-NIC. This greatly improved the performance.

-GNS
0
 
LVL 19

Expert Comment

by:compdigit44
ID: 39862075
Depending on the size of the files you are copying you may want to check the file block size settings on your 2012 and 2008 servers?

https://blogs.technet.com/b/pracheta/archive/2012/08/08/smb-3-0-all-about-it-part-i.aspx

http://support.microsoft.com/kb/223140
0
 

Author Closing Comment

by:ggntt
ID: 39882051
I destroyed the V-NICs and created them again this time enabling I/O-SRV and again under the VM settings on the v-NIC. This greatly improved the performance.
0

Featured Post

Free Trending Threat Insights Every Day

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
Will try to explain how to use the VMware feature TAGs in the VMs and create Veeam Backup Jobs using TAGs. Since this article is too long, I will create second article for the Veeam tasks.
This tutorial will walk an individual through the process of installing of Data Protection Manager on a server running Windows Server 2012 R2, including the prerequisites. Microsoft .Net 3.5 is required. To install this feature, go to Server Manager…
How to install and configure Citrix XenApp 6.5 - Part 1. In this video tutorial we have explained step by step installation of Citrix XenApp 6.5 Server on Windows Server 2008 R2 is explained in this video. We have explained the difference between…

744 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now