Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Windows 2008 Hyper V R2  - physical disk questions

Posted on 2011-03-25
8
Medium Priority
?
629 Views
Last Modified: 2012-05-11
In 2008 HyperV R2 I can add a physical disk to a VM.  

1) Are there any size limitations on that versus a regular VHD e.g. what is the max size of a regular VHD versus a physical disk VHD?

2) When I add the physical disk as a VHD and I run Windows 2008 R2 Server backup will it also backup the physical disk VHD just as it does regular VHDs? For example if I have 4 VM's on a host with 4 VHD's attached to them and I run Server 2008 R2 backup I will create a complete duplicate of the host that in theory I can restore to a different server if necessary.  Does this still work if one of the VHD's attached to one of the VM's is 'physical disk'

I believe the other terminology for physical disk is pass-through
0
Comment
Question by:lineonecorp
  • 3
  • 2
8 Comments
 
LVL 14

Accepted Solution

by:
Erik Pitti earned 800 total points
ID: 35224115
1 VHD limit is ~2TB (2040GB), Physical disk attached to VM =No size limit other than what is supported by the guest operating system

Source:
Technet: Hyper-V: Planning:  Planning for Disks and Storage
http://technet.microsoft.com/en-us/library/dd183729(WS.10).aspx
0
 

Author Comment

by:lineonecorp
ID: 35224503
Thanks for the info and the link. What about my second question? Any insight into it?
0
 

Author Comment

by:lineonecorp
ID: 35292386
Still on this?
0
Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

 

Author Comment

by:lineonecorp
ID: 35396020
Still responding?
0
 
LVL 20

Assisted Solution

by:Svet Paperov
Svet Paperov earned 400 total points
ID: 35440395
You have two ways to attach a physical disk to a virtual machine:  using pass-through disk or, using iSCSI initiator if your disks are on iSCSI NAS. In both cases you will not be limited by the VHD maximum size of 2TB.

Regarding the backup, you cannot use a backup tool on the Hyper-V host to backup a pass-through disk because it is presented as off-line there. Same story with iSCSI attached disk. So, your backup need to be done on the virtual machine.
0
 
LVL 14

Assisted Solution

by:Erik Pitti
Erik Pitti earned 800 total points
ID: 35441137
Physical disks are as @spaperov said presented as offline to the host, whereas VHD's are files that exist on the host's active drive. If you have a VM with physical disks in a pass-thru, you must back up that VM using the backup agent installed on that VM. The host's backup will get everything except the pass-thru disk.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

This article shows how to use a free utility called 'Parkdale' to easily test the performance and benchmark any Hard Drive(s) installed in your computer. We also look at RAM Disks and their speed comparisons.
Are you an Exchange administrator employed with an organization? And, have you encountered a corrupt Exchange database due to which you are not able to open its EDB file. This article will explain all the steps to repair corrupt Exchange database.
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…
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…

963 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