Why was SiS removed?
Personally, I don't care about needing 20% more GBs. Since these database changes allow me to have 50% more users on a single server. The author of this article obviously fails to understand why this decision was made.
In somewhat larger deployments, traditionally one of the first bottlenecks is disk I/Os. The solution is to add more servers and move mailboxes to the new servers. Exchyange 2007 had changes to the database structure which resulted in 70% less IOPs than Exchange 2003. Now Exchange 2010 reduces this again with up to 50%, which allows you to have a lot more mailboxes per server. At the cost of losing SiS.
So what about SMB customers? Well, typically the amount of maildata is not a major concern for these companies. So when they choose to buy Exchange 2010, does it matter if they have 300 or 400 GB of data? Don't think so.
Larger companies? They understand that they need less spindles or can even switch to cheaper disks and still have great performance for their users.
Jetze Mellema
Biting the hand that feeds IT
