F-SECURE ANTI-VIRUS FOR MICROSOFT EXCHANGE 6.62 -, Administrator'S Manual

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CHAPTER 3 37
Installation
3.2 Improving Reliability and Performance
You can improve the system reliability and overall performance by
upgrading the following components.
Processor
If the system load is high, a fast processor on the Microsoft Exchange
Server speeds up the e-mail message processing. As Microsoft
Exchange Server handles a large amount of data, a fast processor alone
is not enough to guarantee a fast operation of F-Secure Anti-Virus for
Microsoft Exchange.
Memory
Memory consumption is directly proportional to the size of processed
mails - scanning a single mail may use memory in amounts up to three
times the size of the mail concerned. If the average size of mail messages
is big, or Microsoft Exchange Server has to process large messages
regularly, increasing the amount of physical memory increases the overall
performance.
If large messages are processed only now and then, it might be enough
to increase the size of the virtual memory. In this case, large messages
will slow the system down.
Hard Drive
Hard drive size is an important reliability factor. Hard drive performance is
crucial for Microsoft Exchange Server to perform well. For best
performance, a RAID system is recommended; for servers with only
moderate load, SCSI hard disks are adequate. If your server has an IDE
hard disk, DMA access support is recommended.
Operating System
It is highly recommended to have the latest service packs for the
operating system being used. These fixes make the platform more stable
and thus increase the reliability of the system.