VMware Snapshot Metadata File
3.6 | 5 Votes
What is a VMSD file?
VMware Fusion and VMware Workstation are virtualization applications that allow you to run multiple operating system VMs on a single machine. When you take a snapshot of a VM, the software creates a frozen saved state of the VM and saves it as a VMSN file. The software also creates a VMSD file to store metadata for the VMSN file.
How to create a VMSD file
When taking a snapshot of a VM, VMware virtualization software creates a VMSN file and VMSD file in the VM file. For example, you can take a snapshot in Fusion by selecting Virtual Machine → Snapshots... → Take Snapshot, then Fusion creates the VMSN and VMSD file in the .VMWAREVM file, which you can find in the following location (Fusion saves it here by default):
Macintosh HD/Users/[username]/Virtual Machines
How to open a VMSD file
VMSD files are saved by VMware software behind the scenes, and you should not attempt to open them manually. Instead, when you open a snapshot from within the VMware Fusion or VMware Workstation user interface, the software references the metadata in the VMSD file.
For example, when you open a snapshot in Fusion by selecting Virtual Machine → Snapshots... → Snapshots... and double-click the snapshot, the software references the metadata in the VMSD file when loading the snapshot.