A Message Restore (Exchange 2010)

I was trying to restore a message however I end up cancelling the restore job. The total message size was less than 1 MB. The backup was done using VMware agent for Backup Exec 2010 R3 with GRT enable. So in other words whole Exchange 2010 machine was backup. The restore job status was showing "Staging".

What is process and how long does it take to restore a message less than 1 MB? I hope the restore process would not copy whole VMware machine (vmdk) file C:\temp on media server and then restore the item. When I cancelled the restore process the temp folder size was 9 GB and I started with 0 MB

Thank you.