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Question

VMware thin disk backup takes full disk backup.

  • June 30, 2020
  • 3 replies
  • 2552 views
A

Hi,

Vmware thin disk backup takes full disk backup. VM backup size is entire disk allocated space. The backup is taken from IBM Spectrum Protect. Is this a known issue.

Hypervisor: Vmware

HW: Nutanix

Any idea/suggestion ?

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3 replies

AnishWalia20
Nutanix Employee
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  • AnishWalia20Nutanix Employee
  • Nutanix Employee
  • July 1, 2020

Hey @Adamaromus . Can you let me know if the VM Disk is showing as thick provisioned on the Vmware end?

I mean go to vSphere Client > Click on VM > Edit Settings > Expand Hard disks > identify if they are thick or thin provisioned.

 

Anish Singh Walia
A
  • Adamaromus
  • Author
  • Voyager
  • July 2, 2020

HI @AnishWalia20 .

Thanks for getting back.

On vm level it shows as thin. This was noticed when backup was taken. Like if the disk is 100GB & has 20GB data, the backup summary will show that 100GB was processed.

AnishWalia20
Nutanix Employee
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  • AnishWalia20Nutanix Employee
  • Nutanix Employee
  • July 2, 2020

Hey, @Adamaromus Glad, I can help.

So we need more info on the backup solution. for eg:

  1. What is the mode of backup done by solution, for eg: is it hot-add, NBD.
  2. Is the VM scheduled for incremental backup or full-backup
  3. What is the schedule for the backup?
  4. How much data is reflected at the backup side when the VM is backed up, is it full or incremental
Anish Singh Walia
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