Security Enhancement Function; Factory-Shipped Network Settings - Hitachi HF-W100E Instruction Manual

4.2.4 Security enhancement function

 Windows® Embedded Standard 7
In Windows® Embedded Standard 7, a spyware preventive function Windows Defender has
been scheduled and is executed regularly on the background. We recommend that you change
the scheduled time as needed so as not to overlap with the operation schedule of job
applications.
The initial schedule settings are shown below.
• Frequency: Every day
• Approximate time: 2:00
 Windows® 10
In Windows® 10, a spyware preventive function Windows Defender has been enabled. The
Windows Defender also includes a virus preventive function. This virus preventive function
may adversely impact application performance compared with when using Windows® 7 in
some cases.

4.2.5 Factory-shipped network settings

 Turning off SNP (Scalable Networking Pack)
The purpose of SNP is to reduce the processor load by delegating TCP-related processing to
the network adapter. SNP is made of the following three features.
・ TCP Chimney Offload
・ Receive Side Scaling (RSS)
・ Network Direct Memory Access (NetDMA)
Unfortunately, if the system in Windows® is used with SNP turned on, processing the
network may become unstable, or the network performance may be reduced when you use the
network in specific ways. This is why SNP is disabled in this equipment.
In Windows® 10, TCP Chimney Offload and Network Direct Memory Access are not
supported by OS, so that we set only Receive Side Scaling (RSS) for invalidity.
4. PRECAUTIONS REGARDING THE OS
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