Delta — Vmdk

When you delete a snapshot, the data in the Delta VMDK must be merged back into the base disk. This process is called .

Because the hypervisor must track multiple layers of disks to fulfill a single read request, having many active delta disks (long snapshot chains) can significantly slow down disk I/O. delta vmdk

Delta files have distinct naming patterns that help administrators identify them. When you delete a snapshot, the data in

The (often appearing as vmname-00000x-delta.vmdk ) is a specialized virtual disk file created by VMware ESXi whenever a snapshot is taken of a virtual machine. It serves as a "redo log" that captures all new data written to the disk after the snapshot point, ensuring the original base disk remains unchanged and "frozen" in time. Core Mechanism: How Delta Disks Work Delta files have distinct naming patterns that help