How many Symantec Protection Engine scanners should be attached to Network Attached Storage devices or filers?
The actual number of scanners required for any given Network Attached Storage or filer is dependent on activity level of the device.
Support recommends at least 2 instances of Symantec Protection Engine connected to each Device. This provides a basic level of fault tolerance. Some installs may require more to handle the scan requests in a timely manner.
You can also use the Protection Engine Sizing Guide to give you an idea of the number of scanners needed to handle the traffic through the NAS. www.symantec.com/docs/TECH196906