Hitachi Compute Blade 500 Series Function Manual page 25

Note
1. Use the TCP/IP protocol.
2. When failover or failback occurred between Primary LAN device and Secondary LAN
device, it takes some time to finish process of failover or failback. Use Event Viewer to
check if the network connection is normally.
3. The following event (warning) log might record when you use Intel(R) PROSet to
configure function or OS boot up.
"Intel(R) xxxxxx Network Connection Network link has been Disconnected."
If Intel(R) PROSet is installed, you can check the LAN device connection as follows.
Right-click the intended network adapter in [Device Manager]. Click [Properties] from
the menu. Select the [Link Speed] tab and check the state of [Link Status].
4. You cannot set the LAN functions AFT, ALB, SFT, and VLAN, if OS Network Load
Balancing (NLB) is installed. If you set any of the functions, communication and
System might abnormal.
5. Do not apply the LAN function for internal cluster communication(Heart Beat) between
cluster servers.
6. Temporarily disabled communication during team or VLAN creation.
If you create a team or VLAN, all the teams or VLANs for the system equipment
might not be temporarily communicated. Before operation, check if all the teams or
VLANs are capable of communication."
7. Temporarily disabled communication during working failover or failback in AFT, SFT,
or ALB. The network connection might be temporarily disconnected.
8. ALB bandwidth
The bandwidth for receive is unchanged because receive LAN device is the primary
LAN device only. The ALB function aims at improving the effective LAN throughput by
the load balance. In some cases, the throughput might not be improved due to
overhead system environment including the CPU load, communication contents, and
software.
9. If a connection error does not link down between the Primary LAN device and active
switching HUB, the failover does not work between the Secondary LAN device and
backup switching HUB.
10. If it could not receive probing packet on your heavy traffic network environment
between the primary LAN device and the secondary LAN device, it might repeat to
failover or failback. Disable the probing packet. See "How to Disable Monitoring
Packet (AFT/ALB)", for details. The SFT function does not transmit the probing packet.
Hitachi Compute Blade 500 Series LAN Advanced Function Manual (for Intel)
LAN Advanced Functions 2-7