Solved

hyper-v merger. how much space needed?

Posted on 2014-04-20
3
1,227 Views
Last Modified: 2014-11-12
Experts,
I want to make sure before i delete some snapshots and start a merger that i have enough space to do so.

I have a 800Gig HyperV box with a couple of snapshots left. It has eaten up all the storage space on a 2.2 TB SSD Raid 5.

I only have 86 gigs left of space. I want to delete the snapshots to start a merger, but want to make sure I have enough free space to do so.

Can someone let me know how much space i will actually need? see pic below for vhd status

storage
0
Comment
Question by:FutureDBA-
3 Comments
 
LVL 35

Expert Comment

by:Mahesh
ID: 40012047
If you have fixed hyper-V VHDs (Thick Provisioned), you don't need additional space because then snapshots would overwrite VHD blocks

However if you have Dynamic expanding VHD files (Thin Provisioned), then you would required free space equal to all snapshot size

Ex:
If you have 100 GB original VHD file and snapshot folder size is 40 GB, then total 40GB more free space you would required before merging snapshots

You may test your scenario by creating one VM with dynamically expanding disk and by creating snapshots and then compare overall host server Disk space change and VHD file changes before and after merging snapshots for confirmation

Check below article for more info
http://social.technet.microsoft.com/Forums/en-US/f954a1d5-76bd-4bec-a85f-babef0359ad1/disk-space-required-for-hyperv-2008-r2-snapshot-delete-and-merge?forum=winserverhyperv

Mahesh.
0
 
LVL 16

Expert Comment

by:Shaik M. Sajid
ID: 40012069
please check this excellent article ...

http://www.ojnetworks.com.au/2012/10/disk-space-required-merge-hyper-v-snapshots-vhd-disk-example-case/


see the steps article..


http://lalit7jain.blogspot.com/2013/10/hyper-v-snapshot-merge-process.html


still u can

i think better delete each snapshot at a time and merge it...


all the best
0
 
LVL 117

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE) earned 500 total points
ID: 40012168
I think it's likely to fail, that's a very large snapshot.

To understand Hyper-V Snapshots further consult this article

Hyper-V Snapshots FAQ

I think I would be incline to create a V2V, to a new virtual machine, and then delete the original, using Disk2VHD in the VM.
0

Featured Post

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Join & Write a Comment

Exchange server is not supported in any cloud-hosted platform (other than Azure with Azure Premium Storage).
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.
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…

758 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

20 Experts available now in Live!

Get 1:1 Help Now