McAfee VIRUSSCAN 8.7I User's Guide download pdf (Page 36)

• The lower level, remote storage, is located on the robotic tape library or stand-alone tape

drive that is connected to the server computer.

Remote Storage automatically copies eligible files on your local volumes to a tape library, then

monitors space available on the local volumes. File data is cached locally so that it can be

accessed quickly as needed. When necessary, Remote Storage moves data from the local storage

to remote storage. When you need to access a file on a volume managed by Remote Storage,

open the file as usual. If the data for the file is no longer cached on your local volume, Remote

Storage recalls the data from a tape library.

How scan deferral works

To improve performance, you can defer on-demand scan tasks when battery power is low or

during presentations. You can also allow the user to defer scheduled scans for one-hour

increments between one and twenty four hours or to defer it forever. Each user deferral is one

hour in duration. For example, if the Defer at most option is set at 2, the user can defer the

scan task two times or two hours. When the maximum specified number of hours elapses, the

scan continues. If the administrator allows unlimited deferrals by setting the option to zero, the

user can continue deferring the scan forever.

How heuristic network check for suspicious files

works

This feature provides customers using Windows-based McAfee anti-virus products with the most

up-to-date real-time detections for certain malware. It uses administrator-configured sensitivity

levels to look for suspicious programs and DLLs running on client systems that are protected

by VirusScan Enterprise. When the real-time malware defense detects a suspicious program, it

sends a DNS request containing a fingerprint of the suspicious file to a central database server

hosted by McAfee Avert Labs. The real-time defense feature does not provide protection for

entire classes of malware; just for suspicious samples. The benefit of protecting against specific

threats is our capability to protect users with McAfee security at virtually the same time that

McAfee Avert Labs determines a sample is malicious. In this release, the feature is disabled by

default. You must select a sensitivity level to enable the feature.

How system utilization works

System utilization is determined when an on-demand scan starts. CPU and IO samples are taken

over the first 30 seconds, then the scan is performed based on the utilization level you specified.

The system utilization you specify does not apply to encrypted files. The decryption is done by

LSASS.EXE, not by the Scan32 process. Scanning encrypted files is CPU intensive, therefore

even if the system limit on the scanning thread is low, it is still scanning files fast enough that

LSASS.EXE must keep busy to supply the decrypted data.

Scanning Items On-Demand

How scan deferral works

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McAfee VIRUSSCAN 8.7I User's Guide Page 36