To get the best performance and the flexibility to expand your mail service, we recommend that you dedicate a computer to function as your e-mail server and that you do not run other servers on the computer.
Tip: Before installing on Microsoft Windows 2008 Server, be sure IIS 7 has "Metabase Compatability" enabled. See also Installing IMail Server on Microsoft® Windows 2008
Required hardware |
For best results |
Intel Pentium® 4, 1 GHz or higher, or an equivalent processor Note: To handle mobile synchronization, 2.4 GHz with 2 GB RAM is highly recommended |
Pentium 4, 3+ GHz For high volume mail servers use Dual Core or Quad Core processors. Note: To handle mobile synchronization, a Dual Core 2.0 GHz with 3 GB RAM is highly recommended. |
1+ GB RAM minimum
|
2+ GB RAM |
TCP/IP enabled network interface card (NIC) with a static IP address |
|
System Guidelines for Mobile Synchronization Usage
These are general guidelines and are an approximation based on in-house performance testing. There is no guarantee that the recommendations stated below will exactly match each particular clients needs. These estimates are based on moderate mobile synchronization usage. Initial mobile synchronization and complete resynchronization of data tend to have very high cpu usage, depending on the amount of data being synchronized.
System performance will seriously be degraded should a large number of initial synchronizations happen simultaneously.
It may be necessary to run the IMailSync application pool with multiple processes should there be a large number of mobile users.
Warning: IMailSync, IAdmin, and IClient should never be run in the same application pool. Also, both IClient and IAdmin do not support multiple processes.
Mobile User Count |
Mobile System Recommendation |
10 Users |
2 GHz Pentium 4 with 1 GB of RAM |
25 Users |
2.4 GHz Pentium 4 with 1 GB of RAM |
100 Users |
2 GHz Dual Core processor with 2 GB of RAM |
250 Users |
2.2 GHz Dual Core processor and/or up to 2.8 GHz Xeon Dual Core processor with 2 GB or RAM |
500 Users |
High end Dual Core or low end Quad Core with 3 GB of RAM |
1000 or more users |
Quad Core with 3 GB Memory or more |
Note: For best performance, we recommend that you make sure the latest updates for the operating systems be employed. Additionally, we recommend NTFS (rather than FAT) file system for increased operability and security.
Tip: IMail Server runs properly on the minimum hardware requirements recommended by the installed operating system. Performance and capacity increases are based on processor speed, RAM, and drive space. As with all server applications, we recommend that you install IMail Server on the fastest and most powerful server that your budget allows.
Note: Do NOT deploy IMail on a Windows 2000 Domain Controller.
Note: If you are missing any of the above, see the latest Release Notes for links to their sources.