Interesting blog post on what scale Hotmail is running at.

Some highlights:

  • Storage is being added at 2’000 Terabytes per month
  • Currently 155’000 Terabytes of storage is being used
  • 350 million people actively use Hotmail on a monthly basis
  • 3’000 million mail messages per day, of which 1’000 million are SPAM.
  • Largest SQL Server 2008 deployment worldwide

Read more about it on the Inside Windows Live Blog