AZURE VM DOWNGRADE

Question

_{Friday, February 13, 2015 11:45 AM}

HI,

i have a question regarding azure VM's.
Can i downgrade an existing VM from D-series to A-series without destroy the VM?
If it's possible, can you tell me how can i do it?

Thanks in advance.

Best regards,
Marco

All replies (2)

_{Friday, February 13, 2015 12:07 PM ✅Answered}

1. First shut down the VM and make a backup of your data-store files. You can utilize the "Azure Storage Explorer" for this, if you are not familiar with the PowerScript commands.
2. Delete the current VM with the option to keep the virtual disk(s).
3. Create a new VM "from Gallery" and choose "my disks". Your VM file of the previous Server should be listed. It might take a few minutes until the file is available after you deleted the VM.
4. Choose a new virtual Hardware from the "A" series.

The new VM "should" boot up clean. Since the virtual Hardware is different between the A and the D series, the operating System might require some reconfiguration, similar to a regular PC when changing the Mainboard.

If this fails, you will have to recreate the VM as "D" series again to restore operation. Restore your backup (item 1) so you do not use the Image that has been messed up by the previous try. In this case you are pretty out of luck. You must set up a new Server and migrate your data and Services.

_{Monday, February 16, 2015 7:14 AM ✅Answered}

The general answer is no. Your VM has to be destroyed and recreated in down-grading or up-grading.

You will loss your temp disk data during the downgrade, but for disk which is backed by storage it will be fine.

Please note, even if you don't downgrade, hardware failure on the cloud leads to service healing, which destroys your temp disk too. You should NOT assume the disk is permanent even if you don't downgrade it.