Hi
I know there are a various documents about upgrading from ESX 3.5 to 4,1 and i have read some of them, but I need some help from those who have
If you delete snapshots, actually it will not delete any files from your VM. It will merge the newly updated files with your base vmdk file. The only ting you will loose is you can't revert your VM to your restore point.
Please read this - http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=101518...
hello sorper, I´ll answer on your post.
Answers:
1. You can keep the database what you had on the old environment
2. No need to upgrade your database
3. You can just unregister an old host from vcenter 2.5 and register it with the new Vcenter and there migrate the VM:s from that host to anew 4.1 host and then upgrade the VM:s VMware tool and virtual hardware
4. If you have snapshots, there is no other way to go. You should delete them othersie it will not allow you to keep the ESX server to maintenance mode.
I would suggest to install your VC4.1 in 64-bit hardware and 64-bit OS as well. I hope you can't install VC4.1 on 32-bit OS. Just consider this point while you are getting into.
Thank you Maximeneu and GanesgNetworks for quick answers!
Yes i know, I will install the New Vcenter on a 64 bits hardware win 2008R2 (64)
but about to delete snabshots, we will loose alot if we delete them so i don't know how to do actually!
If you delete snapshots, actually it will not delete any files from your VM. It will merge the newly updated files with your base vmdk file. The only ting you will loose is you can't revert your VM to your restore point.
Please read this - http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=101518...
upgrading vcenter does not affect the snapshot as it's tied to the configuration file of the virtual machine.
He is not going to upgrade VC. All he has a plan to unregister VMs from old VC2.5 and register them in new VC 4.1
I will not to upgrade Vcenter, the 2.5 will be removed , i will install a 4.1 on a new hardware and 64 OS. But i want to unregister the hosts from the 2.5 oss and register them in the 4.1 vcenter
Good idea build a new vCenter. For small enviroment you can rebuild your configuration (HA setting, resource poool, ...) in a few minutes.
It could be also an easy way to flush the old DB data.
PS: when you add a host to a new vCenter it will be automatically removed from the previous one. I only suggest to disable HA in the old cluster during this migration.
Andre
I did so and the hole operation was very easy and successfull:
Installed a ne Vcenter on a windows 2008R2
maked 2 new databases (one for VC and one for updatemanager) on a one of our SQL server 2008
Maked a connection from the new Vcenter to our 3.5 licens server
Commited all snapshots on one hosts VMs
Disabled HA in the old cluster during this migration
detached the host from old Vcenter
Registered the host on the new Vcenter
updateed VMtools and shuted down the VM
upgraded V. hardware to VM 7 and started the VM
Reconfigured HA and DRS
And wvwery things are just perfect
Soran