ANTIVIRUS SOFTWARE AND
For years, we’ve received anecdotal data from Diskeeper® customers that one of the
benefits of using Diskeeper to handle file and free space fragmentation on their desktop
systems was a significant reduction in the time it takes to conduct virus scans.
With virus attacks rippling through the internet—the quick succession of recent worm
attacks like Sobig, Blaster, and the Welchia worm outbreaks—has created a security
environment of unprecedented intensity and has increased the importance of a fast virus
scan capability on desktop systems as part of an organization’s overall security strategy.
At the request of one of our enterprise customers, Diskeeper Corporation recently did a
study of the effects of disk fragmentation on virus scan time to verify and measure the
magnitude of virus scanning speed improvement.
We tested the top four anti-virus products that collectively represent about 90% of the
U.S. volume license market for anti-virus software:
Symantec Antivirus 2003
McAfee Pro 7.02
Trend Micro PC-cillin 10.03
Panda Titanium Antivirus 2004
When a defragmenter is not regularly run, the systems will build up significant levels of
fragmentation. The requested test scenario was one where the levels of fragmentation
should be consistent with a desktop that is not regularly defragmented and the hardware
should represent desktops that might have been purchased in the last 6 months, meaning
a P4 processor or equivalent and 256 MB of RAM or greater. The mix of files on the test
partition should include MS Office and other typical popular applications and file types.
The test cases were saved as binary images so that the tests could be repeated.
We set up two typical corporate desktop systems as follows:
Windows 2000 Professional SP3, 80GB
Hard Drive, 512 Ram, AMD Athlon 2700+
Test partition: 20GB 114,291 files. Test
partition condition before: 342,283