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mikegodwin
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ESXi Thin Provisioning

Post by mikegodwin »

When Veeam does a backup, does it backup the full size of the VMDK, or does it only backup the used space? If it backs up the full VMDK, would backups get a big boost from using thin provisioning in ESXi?

veremin
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Re: ESXi Thin Provisioning

Post by veremin » 1 person likes this post

There is special CBT query being used by VB&R during backup that returns only non-zeroed disk blocks, therefore, only used blocks of VMDK are read.

Hope this helps.
Thanks.

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