Solved

VMware vSphere side-by-side migration

Posted on 2014-03-12
5
841 Views
Last Modified: 2014-03-14
Hi Experts,

I have a VMware question that I'm trying to play out in my head but I'm having trouble picturing it from start to finish.

Let us say we have 11-node DRS cluster with SAN attached storage (dual HBA for redundancy) on each host supporting about 200 VM's in the cluster. the vCenter 5.0 is running on Windows 2008 R1 and SQL Express 2005 SP1 (Don't ask; Didn't even think this was possible).

I basically want to stand up a brand new vCenter 5.5 2008 R2 server and use full fledged SQL 2008 R2 on a separate server. I also will have to update the hosts eventually as well.

My question is, what are the recommended procedures of accomplishing this cleanly with minimal downtime? Essentially, we do not trust our current installation (strange issues occur from time to time) and we just want to rebuild everything and bring the hosts over.

In our 11-node cluster, we have enough resources to bring down up to three hosts and still provide the necessary resources to support the virtualized environment.

Any ideas, suggestions, and solutions will be greatly appreciated.


KJ~
0
Comment
Question by:kj_syence
  • 3
  • 2
5 Comments
 
LVL 13

Accepted Solution

by:
Abhilash earned 500 total points
ID: 39923572
Its is not as complicated as you think it is.
You will not need downtime for this. This is what you will have to do.
First you have to build a SQL and create a DB instance for vCenter. Going forward from 5.5 SSO will not need a DB so its easier compared to 5.1 where you had to create two DB's.

So once your DB is up and running you can build a new vcenter for which you will find a lot of documentation. Once the New vCenter is up and running, you can Disable HA/DRS on your old vCenter cluster.

Now one by one you can disconnect and remove the host from older server and add them to the new one. This will not cause the machines to power off. They will work fine. Juts that you will not be able to manage the VM's through vCenter. Once you add this host to new vCenter you will again be able to manage them centrally.

Do this for all the hosts. It only gets tricky if you have Distributed switch and if you have to also recover the events and logs from old vcenter for auditing purposes.
0
 
LVL 1

Author Comment

by:kj_syence
ID: 39924044
After reading the way you described it, it does seem fairly straight forward.

Good points about distributed switches and events/logs. That did not dawn on me until now.
0
 
LVL 1

Author Comment

by:kj_syence
ID: 39929725
One last question for you, Abhilash. What would be the purpose of disabling HA/DRS on the old cluster while moving hosts? It seems like it wouldn't hurt leaving this on and would still allow HA to perform in the case of a host going down during the migration.
0
 
LVL 13

Expert Comment

by:Abhilash
ID: 39929925
If a cluster enabled for VMware HA loses so many resources that it can no longer fulfill its
failover requirements, a message appears and the cluster turns red.
That's the only reason. You can keep it on.
0
 
LVL 1

Author Closing Comment

by:kj_syence
ID: 39929952
Thanks.
0

Featured Post

Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.

Question has a verified solution.

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

Veeam Backup & Replication has added a new integration – Veeam Backup for Microsoft Office 365.  In this blog, we will discuss how you can benefit from Office 365 email backup with the Veeam’s new product and try to shed some light on the needs and …
In this article, I will show you HOW TO: Create your first Windows Virtual Machine on a VMware vSphere Hypervisor 6.5 (ESXi 6.5) Host Server, the Windows OS we will install is Windows Server 2016.
This tutorial will walk an individual through the steps necessary to configure their installation of BackupExec 2012 to use network shared disk space. Verify that the path to the shared storage is valid and that data can be written to that location:…
This tutorial will walk an individual through setting the global and backup job media overwrite and protection periods in Backup Exec 2012. Log onto the Backup Exec Central Administration Server. Examine the services. If all or most of them are stop…

914 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

18 Experts available now in Live!

Get 1:1 Help Now