In this short video I demonstrate another script which I integrated into the VESI. The video will show how to create a backup of your DRS rules and how to restore a DRS rule from a previous backup:
The original script can be found in this post.
Backup and Restore DRS Rules with the VESI
ICT-Freak.nl 
Eric
Will this work with ESX 3.5?
Alex
Didn’t test it with ESX 3.5 but I guess it should work.