VxRail: How to create a Thick Provisioned Disk on vSAN
Summary: This article explains how to create thick provisioned disks for a virtual machine in VxRail Virtual Storage Area Network (vSAN) environments.
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Instructions
In vSAN environments, Virtual Machine Disk (VMDK) files are created as thin provisioned by default. In certain scenarios, it may be necessary to pre-allocate all the VMDK spaces, or thick provision the disks.
To create thick provisioned disks, use a Storage Policy which has Object Space Reservation (OSR) set to 100% in its Rule-Set. This ensures that the entire disk size is immediately allocated.
Affected Products
VxRail Appliance FamilyProducts
VxRail Appliance Family, VxRail Appliance SeriesArticle Properties
Article Number: 000019566
Article Type: How To
Last Modified: 24 Mar 2026
Version: 5
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