What is the Maximum File Size that ProxySG and ProxyAV can scan?
The maximum file size the ProxyAV can scan (or be configured to) is 512MB; anything above this file size and the ProxyAV fail-closes. The default is 100MB, which is the Blue Coat-recommended value. To serve files greater than 512MB without scanning, you must configure the ProxySG to fail-open. The ProxySG does not have a maximum file size limit for forwarding ICAP requests, except for one known issue: the ProxySG does not fail-open if the object is larger than the maximum cacheable size (the default is 1024 MB) and a patience page is enabled.