For using custom DNS, I want to switch from shared mode to reserved mode for 2 of my Windows Azure Web sites. These sites have low traffic and custom dns is the only reason to upgrade from shared to reserved.
What I am wondering is that when I switch to reserved mode for 2 of my sites, whether azure allocates 2 small VM instances (one for each) or do they share a common small VM (single) ?
If separate VM is dedicated for each web site, is not it quite expensive ? 57$ for each of them just to have custom DNS ?
Thanks in advance.
When you upgrade one website to a reserved instance you’ll get a notification like this one, requiring you to upgrade all your sites in the current region to reserved mode:
In my example I have 2 websites in the North Europe region, both instances will be upgraded to reserved model. You’ll get 1 instance containing all your websites for that region. If you reach a point where you want to improve performance (let’s say you have 100 sites), you can simply add new instances to the reserved capacity (this can be done in the scale menu).