What's the difference between Thin provisioning and Thick provisioning lazy zeroed?

Hello, Helen!

Yes, the FusionCompute disk has three specified types.

Common: The system allocates disk space based on the disk capacity. During disk creation in this mode, data remaining on the physical device will be zeroed out. The performance of the disks in this mode is better than that in the other two modes, but the creation duration may be longer than that required in the other modes.

It is recommended that system disks use this configuration mode.

Thin provisioning: In this mode, the system allocates part of the configured disk capacity for the first time, and allocates the rest of disk capacity based on the storage usage of the disk until the configured disk capacity is allocated.

Thick provisioning lazy zeroed: The system allocates disk space based on the disk capacity. However, data remaining on the physical device is zeroed out only on the first data written from the VM as required. In this mode, the disk creation speed is faster than that in the Common mode, and the I/O performance is medium between the Common and Thin provisioning modes.

This mode is supported only when the data store type is virtualized local disks or virtual SAN storage.

And I have a post on this that I recommend to you:

Difference between Thick and Thin Provisioning

Hope this can help you!

Hello, this is another post about the difference between Thick Provisioning and Thin Provisioning.