Microsoft 的 Exchange 組織規模

雖然 Microsoft 的 Exchange Server 數量已經比以往降低很多，不過仍然是個規模相當大的 Exchange 組織架構，我們可以看看Microsoft 所提供的幾個有趣數字。(Microsoft 是個很喜歡看數字的公司 ... )

網路環境 :
•Three enterprise data centers.
•Nineteen regional data centers worldwide.
•More than 300 sites in approximately 230 cities in 77 countries.
•More than 3,300 IP subnets.
•More than 2,000 routers.
•More than 10,000 worldwide servers.
•More than 350,000 local area network (LAN) ports.

Exchange Server 環境 :
- 116 servers running Exchange Server 2003 (including passive clustered nodes), of which 63 of the 69 mailbox servers are in clustered configurations running Windows Server 2003.
- Four Exchange sites in regional data centers worldwide.
- Messaging services for approximately 102,000 users.
- More than 118,000 total mailboxes (including system mailboxes).
- 200-megabyte (MB) storage limit for each mailbox.
- More than 10 million messages globally per day. (Approximately 3 million are internal e-mail messages.)
- 20,096 Smartphone devices that access Exchange.
- 5,145 mobile devices running Windows Mobile version 5.0 that access Exchange.
- 2,279 devices not running Windows Mobile but using an Outlook Mobile Access connection.
- 60,482 users connecting to Exchange by Outlook Web Access 2003.
- Approximately 60,000 users connecting to Exchange by remote procedure call (RPC) over Hypertext Transfer Protocol (HTTP) and Outlook 2003."

更詳盡的資訊可以參考以下的 Microsoft IT Showcase，文章中說明了 Microsoft 自己本身是如何管理 Exchange 架構與相關服務。
Managing Exchange Messaging Services by Using Metrics