Windows7 uses VPC image file format during backup!

i was surprised to know 2 things about windows7 while working with backup and recovery.

1. win7 creates .vhd files for backups; means you can re-use the image if you install VPC for windows7 for other purposes, you can even use VMWare

2. if you create system image again and again, windows will keep the latest backup and over writes the previous backups