Solved

VMs slow - using only ~1GB of it's assigned memory

Posted on 2013-01-14
8
270 Views
Last Modified: 2013-01-16
Hi,

we had to move some VMs from a storage device to another ( 2 VMs hosted into a hyper-v 2008 OS server (32 GB RAM)). When we start the VMs now they do start but it takes ~15 minutes for each and it looks like they use only ~1 GB (instead of 15GB and 14GB that they have), so the VMs run really slow.

Any help would be appreciated.
Please let me know if you need any further info.

Thanks,
Rezart
0
Comment
Question by:sblanken
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
  • 2
8 Comments
 
LVL 121
ID: 38776091
Is the datastore configuration the same as the original server?

Is the specification of the host server, the same as the previous server?
0
 
LVL 12

Assisted Solution

by:DarinTCH
DarinTCH earned 500 total points
ID: 38776168
how did you move?
Export?
migration?
are these the only 2 u moved or the only 2 having issues
Are the Hosts configured the same and the same level of OS/SP
0
 

Author Comment

by:sblanken
ID: 38776198
thank you for your immediate reply:
setup before: host with 2 VMs on its E: drive (LUN on CX3 storage device through fiber)
setup after: we connected another LUN through iSCSI and copied the VMs (after shuting them down) and presented this as E: drive. After a restart of the host, the machines start but very slow.
these 2 are the only machines hosted on this host.
0
Use Case: Protecting a Hybrid Cloud Infrastructure

Microsoft Azure is rapidly becoming the norm in dynamic IT environments. This document describes the challenges that organizations face when protecting data in a hybrid cloud IT environment and presents a use case to demonstrate how Acronis Backup protects all data.

 
LVL 121
ID: 38776220
do you have any other VMs on iSCSI LUNs with startup, slow issues?
0
 

Author Comment

by:sblanken
ID: 38776337
we have other servers connected through iscsi to the cx4, hosting VMs with no issues at all
0
 
LVL 12

Accepted Solution

by:
DarinTCH earned 500 total points
ID: 38776392
I ran into something similar last week - but the storage was local
fortunately I had imported...
so I killed the VMs and imported a second time making sure I choose the unique Identifier chi box
and they started working ....
It drove me nuts they started up for 20-30 minutes
0
 

Author Comment

by:sblanken
ID: 38783777
Took us a day to troubleshoot on this, however issue solved, the bottleneck might have been the iSCSI connection (on the host hyper-v server), once installing fresh hyper-v 2012 OS on the core server with the latest drivers and the VMs are working properly.

Thank you,
Rezart
0

Featured Post

 [eBook] Windows Nano Server

Download this FREE eBook and learn all you need to get started with Windows Nano Server, including deployment options, remote management
and troubleshooting tips and tricks

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Last article we focus in how to VMware: How to create and use VMs TAGs – Part 1 so before follow this article and perform the next tasks, you should read the first article how to create the TAG before using them in Veeam Backup Jobs.
In this article, I am going to show you how to simulate a multi-site Lab environment on a single Hyper-V host. I use this method successfully in my own lab to simulate three fully routed global AD Sites on a Windows 10 Hyper-V host.
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…
In this video tutorial I show you the main steps to install and configure  a VMware ESXi6.0 server. The video has my comments as text on the screen and you can pause anytime when needed. Hope this will be helpful. Verify that your hardware and BIO…

636 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