restore data from Synology backup using virtual DSM

It happened to me…. 

A crash off all my disks in a Synology DS 412+. Yeah….. For sometime my disks reported problems… but I thought.. just wait a few months more… then I can buy new disks…
But in the end…. the disks crashed all together.
I know what your first response is…. did you make backups ??
Answer: Yes. Yes I did.

How to restore

I used synology Hyper backup to make backups off my photos, documents and music folder to an external USB drive. And I new that these backups where very recent.
But to access this data  I had to restore it and needed a working Synology DSM. My options were:

  1. buy at least 2 new disks and re-install the DS 412+
  2. Find a friend with a DSM and use his/her DSM to restore my data and to move it into a cloud storage
  3. Looking into running DSM virtual

I choose option 3. Why ?
Well…. I was interested if it could be done.
Technicaly it could be possible. I had VMware workstation running on my laptop and new about xpenology. After some searching on the internet I found this
So it could be done….

Running DSM virtual

After some experiments I got it working, running DSM 6.x in a VM under VMware workstation 12.
I created a virtual DSM according to others blogs. Added a disk (VMDK) 200 GB in size. (large enough to restore a backup-set).
Then I started the DSM, did the usual configuration. Made a no-raid raid config with one disk. Created the volume in the newly created raid set. installed some DSM apps (at least the hyper-backup application).
And restored a backup from my external USB drive.

Moving data in to the cloud

Yes !!!!…. I had found a way to acces my data… but where should I store it ?
I used the Cloud sync app to sync the restored data to a cloud storage provider. If the provider supports webdav then it is possible to sync your local data to it. I needed to keep this running for several days due to the upload bandwith of my internet provider. but in the end I had my data accesible again.
xpenology and virtualization saved the day.

Restore experience vCenter appliance

Until a few months ago I worked with vCenters that were running on a Windows OS. Because that was the common practise. The appliance was promising but not ready for production use. When vSphere 5.5 was introduced it became an interesting discussion,should you use the appliance or still go the windows way.
I think one of the points holding people of from going to the appliance was (and maybe still is) the unknown.
I was mostly familiair with a windows OS.Yes the Windows patching was irritating, and if you wanted to upgrade VMware vCenter ….. that also was annoying. But not anymore… (well I guess for over a year that is…)

The appliance in 6.0 is great. I wrote in another article about my experience of migrating to 6.0 appliance with an update manager deployed. ( And I’m loving it. I was impressed by the ease of migrating from vCenter 5.5 running on Windows to 6.0 VCSA.

But there was one, tiny little, issue, called backup and restore.
How should that work when you are running an appliance.
For testing purposes we did a restore of the appliance but ran into a problem. The network adapter changed. The appliance OS didn’t recognize it anymore as eth0 but as eth1.
And our first conclusion was… well…. that is a problem…restoring a VCSA.
Diving into some vmware documentation, I ran into info that restoring a VCSA should work… (see question 29 in…. What did we do wrong….

After examening the events of the restored VCSA we saw an error. vCenter was saying that there was a duplicated MAC address…. so it changed the MAC address of the restored VCSA… hence the eth1.

And yes… that was the issue…. in default vCenter will change a MAC address if it already exists. (that is the short version)…. so I tried it again…. But with a small change.

I created a virtual portgroup on a vswitch, not on the dvswitch. Taking care of the duplicated MAC address in a dvSwitch… I changed the MAC address of the restored VCSA back to the original setting. And I started the VM…. voila….
The VM booted…. and after waiting for the boot process to complete…. I had a restored VCSA, fully functional.


  • restoring a VCSA does work… just keep in mind if you replace the existing VCSA or restoring it next to it (duplicated MAC address)
  • Updating the VCSA is a breeze . You need connection to the internet, and the appliance will take care of the update. No seperate OS updates and vCenter updates.
  • (side note) the webclient interface is faster than the one in 5.5


For my work I use PowerCLI a lot, but I don’t like the shell that is available when installing PowerCLI. I just want to start PowerShell (mostly through PowerShell ISE) and load with one command the PowerCLI modules and/or snapins and not be limited.

Before PowerCLI 6.5, PowerCLI was a mix of powershell snappins and modules. To support older PowerCLI versions, the script will check if there are vmware powershell snappins registered. And will load them.
Powershell modules will have precedence over the snappins. Continue reading “import-PowerCLI”