Dell PowerVault 745N Configuring Windows® Firewall to Work With Dell - Page 20

Table 1.4 Sample File Transfer Time Estimate File Type Quantity Size Bytes (Approximate) Exchange database (.edb) 1 6.14 GB 6,593,000,000 Streaming database (.stm) 1 2 MB 2,097,000 Transaction logs 1,375 6.71 GB 7,205,000,000 Total = 13,800,097,000 File transfer rate is approximately 755,000,000 bytes per minute. 13,800,097,000/ 755,000,000 = ~18 File transfer time is approximately 18 minutes. Planning a Deployment Because Exchange Server 2003 Standard Edition limits database size to 16 MB, file transfer from Standard Edition generally takes fewer than 30 minutes. Because Exchange Server 2003 Enterprise Edition does not limit database size, file transfer from Enterprise Edition can take considerably more time. Planning Exchange Cluster Configuration The Feature Pack supports the following Exchange server cluster configurations: One or two 2-node active/passive Exchange clusters One 2-node active/passive Exchange cluster and one stand-alone Exchange server One 2-node active/active Exchange cluster Active/passive clusters are recommended over active/active clusters, because they typically increase performance, availability, and scalability. This section provides an overview of the basic requirements for deploying the Windows Storage Server computer with an Exchange server cluster. Notice The Feature Pack does not support NAS clusters. Do not install the Feature Pack on Dell PowerVault NAS Systems in a cluster configuration. For more information about Exchange clusters, including cluster capacity and configuration considerations, see the Microsoft Exchange Server 2003 Deployment Guide and the white paper, Using Clustering with Exchange 2003: An Example, on the Exchange 2003 Deployment website (http://go.microsoft.com/fwlink/?LinkId=23412). For information about how to administer and manage Exchange server clusters, see the Microsoft Exchange Server 2003 Administration Guide on the Microsoft TechNet site (http://go.microsoft.com/fwlink/?LinkId=21769). Remotely Storing Files from an Active/Passive Exchange Cluster The Feature Pack supports one or two 2-node active/passive Exchange clusters per Windows Storage Server computer, as shown in Figure 1.5. In the supported configuration, no more than two Exchange servers - one from each cluster - access the Windows Storage Server computer at any time. In each cluster, the passive server accesses the Windows Storage Server computer only if the active server fails. This configuration requires a dedicated Gigabit Ethernet connection between each Exchange 2003 active/passive cluster and the Windows Storage Server computer. A dedicated Gigabit Ethernet connection is either a direct point-to-point connection, or is implemented through a Feature Pack Deployment Guide 20