I have a couiple of VMs that was used as part of the Disaster Recovery Environment. I was using Veeam to do failover from my production to environment.
Everything was working well until we decided to switch back to production. One of our junior admins did a "undo failover" instead of "permanent failover"
This meant that all our data have been lost for up to 1 week. We had the VMs running for 1 week. Is there any way to recover the lost data?
Great. You understood me.
Unfortunately I did not make backup so replica restore points. I know that is the most important thing. but i messed up.
Is there a way to recover the delta disks?
A good place to head to: Veeam Community Forums
Unfortunately, even if you recover the delta VMDKs because this VM has been running for some time, the deltas can no longer be applied to it because those references points are invalid. It would essentially be corrupting all that data anyhow. This seems like a teachable moment all the way around.
Thanks for replying guys.
One other thing i noticed while i was poking around in the datastore on the DR site, there are delta disks within the virtual machine folders. The name of the delta disks begin with mailserver-0001-delta.vmdk...,etc.
Is it possible to mount these disks and retrieve the files and folders from 1 week ago?
Although I agree with daphnissov that chances to recover data are close to zero, we can take a look at the VM's files that you have in the datastore.
For that, please run ls -lisa > filelist.txt in the VM's folder, and attach the filelist.txt to your next reply.
Just to make sure that I get this correctly.
The file list that you've posted, is this the one from the currently powered off replica? If yes, it should be possible to somehow mount the snapshot, if the snapshot chain is still healthy.
Please provide the details about the listed files , and the VM, so that we can figure out the proper steps to mount the virtual disk, i.e. access the contents.
According to the presented files, the VM has been powered on yesterday (either manually, or by a e.g. backup verification job), so that answers my question on whether the files are in use.
If this is the current replica, then it contains the same data as the original VM, and the previous snapshot holds data from the March, 10th, which may not help.
Does the original VM have active snapshots?
I'm afaid that in this case there's no chance to recover missing data other than from a backup. If I interpret this correcttly the undo has most likely reset the VM to the state on March, 10th.