Recovering a delta VMDK is usually necessary when a snapshot chain is broken, the base disk is missing, or the .vmdk descriptor file is corrupted. 1. Understanding the Role of Delta Files A virtual disk in a snapshot state consists of:
A standard VMDK consists of two parts: a small text descriptor file (which defines the geometry, adapter type, and parent linkage) and a large binary data file (the actual storage). In a snapshot scenario, the base VMDK becomes read-only, and a new delta file is created to capture all subsequent writes. delta vmdk recovery
The small text file ( .vmdk ) containing the tracking geometry and CID (Content ID) chain breaks. Recovering a delta VMDK is usually necessary when