VMware thick provisioning Delay zero, thick provisioning zero, thin provisioning specific explanations

This article describes VMware thick provisioning delay zero, thick provisioning zero, thin provisioning concept and selection

1, thick provision delay 0 (zeroed thick)

Creates a virtual disk in the default thick format. Allocate the required space for the virtual disk during the creation process. Creation does not erase whatever data is kept on the physical device, but it will be reset to zero when it is first run from the virtual machine.

The simple is to allocate the space of the specified size immediately, the data in the space is temporarily not emptied, and then emptied as needed.

2, thick provision 0 (eager zeroed thick)

Create thick disks that support clustering features, such as Faulttolerance.

Allocate the required space for the virtual disk when it is created. In contrast to the flat format, the data retained on the physical device is zeroed during the creation process.

It may take longer to create a disk of such a format than to create another type of disk .

Simply put, allocate the space of the specified size immediately. and empty all the data in that space.

3. Thin provisioning (thin)

Use thin provisioning format. Initially, a thinly provisioned disk uses only the data storage space that the disk originally needed.

Suppose you need a lot of other space to thin disk later. It can grow to the maximum capacity allocated for it.

The simplest is to specify the maximum space for the disk file to grow. The need to increase the time to check whether the limit is exceeded.

VMware thick provisioning Delay zero, thick provisioning zero, thin provisioning specific explanations