When Os Is In Operation - NEC Express5800 Series Maintenance Manual

Chapter 1 Maintenance
5.8

When OS is in Operation

[?] Windows operation is unstable
Have you installed the Starter Pack?

→ If the network driver is installed after OS is installed, Windows operation may become unstable.
Install the Starter Pack by referring to the description about how to install the Starter Pack for
each OS in "Installation Guide (Windows)".
[?] After the system is restored from the backup tool, Windows is misbehaving
→ Update the system by using EXPRESSBUILDER (refer to Chapter 2 Installing the Bundled
Software in "Installation Guide (Windows)".
[?] The system time lags
→ In Windows Server 2008, if you do not use the server that adjusts time such as NTP (Network
Time Protocol) Server, the system time may differ from actual time.
In this case, use NTP server or disable Windows Time Service.
[?] Fails to be recognized on network
Is the cable connected properly?

→ Securely connect the proper cable to the network port on the rear of the server. Additionally, make
sure that the cable conforms to the network interface standards.
Are BIOS settings correct?

→ You can disable the internal network controller using the BIOS setup utility. Check the settings
with BIOS setup utility.
Have you completed protocol and services settings?

→ Verity that the network driver for the server network controller has been installed. Also verify that
protocol such as TCP/IP or various services have been properly specified.
Are transfer rate settings correct?

→ Verify that the transfer rate and duplex mode are the same as those of the connecting hubs.
[?] Communication performance of an optional LAN board is degraded
→ NEC recommends that the value of Jumbo Packet be 4,000 bytes or less for optional LAN card
N8104-128 if the settings of Flow Control are specified as anything other than Disabled.
If the value of Jumbo Packet is set larger than the recommended value, communication
performance may be degraded.
[?] There are RX dropped packets when the system was started on Linux
→ Although there may be RX dropped packets when the system is started, there is no operational
problem. Check the system and network environment when there are RX dropped packets
during operation or when there is no communication.
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Express5800/E120e-M Maintenance Guide
5. Troubleshooting