Solved

Server 2012 R2 - High avaliability VMSs without shared storage

Posted on 2015-01-07
7
203 Views
Last Modified: 2015-01-08
Hi All,

I have 2 hyper-v hosts, each with local storage. One host will contain a Vm which will act as a file and print server, serving file shares for documents etc.  I want make this VM as highly available as possible so that if it goes down, I can switch over to the second host.

From what I have read, most clustering scenarios in Windows server 2012 R2 require separate hardware for shared storage however I am hoping that there is a better solution out there that will allow me to utilize just the 2 hosts with local storage.

thanks
0
Comment
Question by:lutherpendragon
7 Comments
 
LVL 56

Expert Comment

by:Cliff Galiher
ID: 40536024
There is software that can replicate data synchronously, but the cost/performance usually doesn't work out well since shared SAS is now relatively inexpensive. If you have some tolerance for a small amount of data loss in the event of an unplanned failover, hyper-V replica is an option and is what I'd usually recommend for a small shop where shared storage is too complex/expensive.
0
 
LVL 38

Accepted Solution

by:
Philip Elder earned 250 total points
ID: 40536246
You can do Hyper-V Replica between the two hosts that will allow for VM replication.

It's not a HA setup per se but works in a pinch.

Add a couple of SAS HBAs and a DNS-1640 JBOD and you have your shared storage for a very inexpensive price.

Flip your drives into the JBOD leaving two behind for the host OS, add a few more to complete the set, and away you go with an Asymmetric cluster. We deploy these to clients as small as 15 seats.
0
 
LVL 47

Expert Comment

by:dlethe
ID: 40536964
Get yourself a used, low-cost external RAID subsystem that IS on the  HCL so you know it will work in a high-availability config.  Lots of them cheap on ebay.

Or, get a SAS JBOD enclosure.  In both cases you want to get LSI non-RAID HBAs, like anyting in the 3x00 familiy if you don't need a lot of disk I/O
0
Backup Your Microsoft Windows Server®

Backup all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

 

Author Comment

by:lutherpendragon
ID: 40537605
Sorry, should have added that there is no extra budget available for further purchases. We have to make do with what we have which is local storage on the hosts.
0
 

Author Comment

by:lutherpendragon
ID: 40537618
I'd like to add that someone (elsewhere) suggested using a shared vhdx as the large file share and then configuring the guest VMs with the file server role, replicating them between 2 hosts and attaching that file share (shared vhdx) within them. I've been told that in the event of 1 file server going down, users can still access the fileshare through the other vm.

Has anyone done something similar?
0
 
LVL 56

Assisted Solution

by:Cliff Galiher
Cliff Galiher earned 250 total points
ID: 40537741
It doesn't work that way. A shared vhdx is intended for guest clusters, but the VJDX is still a singular entity, not replicated. So the single point of failure is still the local storage that holds the VHDX. Right now, with the "no budget" clause, I still believe hyper-V replica is your best bet as I previously mentioned. Anything else more robust will have a cost, and a not entirely insignificant one at that. Even virtual SAN software with synchronous writes/replication is a but spendy.
0
 

Author Closing Comment

by:lutherpendragon
ID: 40537784
Thanks for the verification. Will look into Hyper-v replica and post seperate questions!
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

First I will try to share a design of a Veeam Backup Infrastructure without Direct NFS Access backup. Note: Direct NFS Access backup transport mechanism is only available in Veeam v9 In above I try to design the Veeam Backup flow between i…
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.
In this Micro Tutorial viewers will learn how to use Windows Server Backup to create full image of their system. Tutorial shows how to install Windows Server Backup Feature on Windows 2012R2 and how to configure scheduled Bare Metal Recovery backup.…
In this Micro Tutorial viewers will learn how they can get their files copied out from their unbootable system without need to use recovery services. As an example non-bootable Windows 2012R2 installation is used which has boot problems.

910 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

21 Experts available now in Live!

Get 1:1 Help Now