VMware vSphere中三种磁盘模式：精简置备厚置备置零厚置备延迟 ...

Thick Lazy Zeroed配置用于以默认的厚格式创建虚拟机 (VM)磁盘，它将在创建VM时保留磁盘空间，但仅在虚拟机上清除包含存储设备上的旧数据，将新数据写入磁盘。

Thick Provisioned Lazy Zeroed Description: Immediately reserves all disk space assigned to the virtual machine but only “zeros out” (fills with zeros) the blocks as the VM uses them for the first time.

Disk provisioning comes in three main types: thin, thick (with eager-zeroed and lazy-zeroed variations), and dynamic provisioning. Each method has unique benefits and trade-offs, impacting how storage resources are used and managed.

Thin Provision (以下簡稱：Thin) Thick Provision Lazy Zeroed (以下簡稱：Lazy) Thick Provision Eager Zeroed (以下簡稱：Eager) 三者差異： Thin Provision： Guest OS能夠看到完整大小，但儲存裝置依照Guest OS實際使用進行動態成長 例如：VM 切 100GB 空間時，Guest OS 使用 5GB

To change VMDK from Thin to Thick Lazy Zeroed: This needs to be done using vmkfstools utility which is available in ESXi SSH. The first step involves creating a copy of VMDK in thick lazy zeroed format and the second step would be to attach the newly crea

Thin Provision： 儲存空間隨著 Guest OS 使用才會動態成長 (Allocated and zeroed on demand as the space is used)，對於 Guest OS 來說它以為擁有所有儲存空間的使用權，但是對於儲存設備來說僅會佔用已使用的部份。