NEC 320Fc - Manual (Page 25)

System Prerequisites
Preparing for the Active Upgrade Process 2-3
All ports on any dual-port adapter must be either teamed or not teamed. You cannot
have only one port on an adapter teamed.
You do not need to team non-embedded Ethernet PCI adapters for the Active
Upgrade process, but it is best to do so to ensure that the network connectivity
provided by these adapters continues to be available throughout the upgrade
process. The readiness check in Active Upgrade console displays a warning for
each unteamed Ethernet PCI adapter, but the warnings do not prevent you from
proceeding with the upgrade process.
N O T E
If you modify the configuration of your Ethernet PCI
adapters and Ethernet teams to meet these prerequisites,
it could impact network connectivity for the system. You
should schedule this work to minimize impact to your
critical applications.
See the Express5800/320Fc: User Guide for more information about
configuring Ethernet PCI adapters and Ethernet teams.
• Contain Virtual Technician Modules (VTMs).
The VTMs provide the connection between the Production Side and Upgrade Side
during the Active Upgrade process. Both VTMs must be configured properly and
connected to the same subnetwork, preferably on a dedicated maintenance
network.
• Can tolerate running in simplex mode for a brief period during the upgrade.
Because each side of the system runs in simplex mode during the upgrade, an
interruption on the side that is actively running your critical applications can result
in downtime.
C A U T I O N !
You cannot restart the operating system on the Production
Side during an upgrade (though you can restart the
Upgrade Side as many times as necessary.) Also, it is
unsafe to pull an enclosure from a split-mode, simplexed
system because doing so terminates all processes
running on that enclosure.