Please teach the flow of making snapshot, and data.

[takechi]

Please teach the flow of the data changed after snapshot is gathered.

When snapshot is acquired, data to which another file is made and changed seems to be written in the snapshot file.

Is the changed data written directly in snapshot?

Or, as for data, is the data that is written in former vmdk file, and changed saved in the snapshot file?

Please teach if you know because detailed operation is not understood.

Best Regards.

[Dave_Mishchenko · Accepted solution]

When you create a snapshot, all changes to the VM are written to the snapshot. The VMDK is only used for read operations for data that hasn't been updated in the snapshot file. When you're done with the snapshot, you can discard it in which case the snapshot file is deleted and the VM is back to the place it was when you took the snapshot. Otherwise, you can commit the snapshot, in which case all the changes made since the snapshot was created are read from the snapshot file and written to the vmdk file. Once the snapshot is committed, the snapshot file is deleted.

[Abaronov]

Snapshot is a snapshot. When you snapshot the system, vmdk files stay unchanged. All the changes (differences) are written to appropriate log files.

thanks,

Andrei

[takechi]

Thank you for a very early reply.

It served as a reference very much.

Please teach if you know.

Is data that executes vcbmounter and is backed up vmdk file?

Best Regards.

[Abaronov]

You are correct. vcbmounter mounts the snapshot (vmdk) file.

Thanks,

Andrei

[takechi]

Thank you for the answer.

It was possible to understand from this.

Thank you really.

[nonu]

Thanks Dave, SnapShots never looked So Simple....

Awesome Stuff....!!!!!