We're getting more frequent HD failure messages on one of our old, rented HWSs, so it's decision time. H3 is a reasonable option, but it's not the best time for us. I know that it's easy to replace the HD, what would be the fallout if I did it myself on a rented HWS? I could save the old one and reinstall it whenever we upgrade. All suggestions welcome, but preferably from someone who has done this. Thanks