Virus Scanning

[Troy Settle]

I'm trying to figure out the best approach to handle virus scanning on
my new mail server.  The machine itself is a beast:
  Dual Xeon 2.4GHZ (HT)
  4GB RAM
  U160 RAID1 (system)
  U160 RAID5 (storage)

Originally, I was thinking that handling the virus scanning on a memory
file system would be best to keep disk IO to a minimum, however, I'm
unable to demonstrate the mfs is any faster than a real disk, even when
copying 200MB files.  This is probably due to softupdates.

So, with softupdates enabled, is there any real disk IO if an email
message (and it's attachments) are extracted, written, scanned, and
deleted within a few hundred milliseconds?  Would there be any real
advantage to performing these operations on a memory filesystem?

TIA,

--
  Troy Settle
  Pulaski Networks
  http://www.psknet.com
  540.994.4254 - 866.477.5638