IBM N Series, Hardware Manual

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IBM System Storage N series Hardware Guide
Configuring dedicated interfaces with setup
A dedicated network interface for the local controller whether the controller is in takeover
mode. A network interface performs this role if it has a local IP address but not a partner IP
address. You can assign this role by using the
partner option of the ifconfig command.
Example 7-6 shows how to configure a dedicated interface for the N series.
Example 7-6 Configuring a dedicated interface
Please enter the IP address for Network Interface e0b []: 9.11.218.160
Please enter the netmask for Network Interface e0b [255.0.0.0]: 255.0.0.0
Should interface e0b take over a partner IP address during failover? [n]:n
Configuring standby interfaces with setup
If the partner node fails, the system activates the partner IP addresses that were assigned as
takeover IP address. When the file server is not in takeover mode, the partner IP address is
not active. A network interface performs this role if it does not have a local IP address but a
partner IP address. You can assign this role by using the
partner option of the ifconfig
command.
Example 7-7 shows how to configure a standby network interface for the partner. You do not
configure any IP addresses for the
e0b interface.
Example 7-7 Configuring standby network interface
Please enter the IP address for Network Interface e0b []:
Should interface e0b take over a partner IP address during failover? [n]: y
Please enter the IPv4 address or interface name to be taken over by e0b []: e0b
7.3.6 Setting options and parameters
Some options must be the same on both nodes in the HA pair configuration. Others can be
different, and still others are affected by failover events.
In an HA pair configuration, options can be one of the following types:
򐂰 Options that must be the same on both nodes for the HA pair configuration to function
correctly.
򐂰 Options that might be overwritten on the node that is failing over. These options must be
the same on both nodes to avoid losing system state after a failover.
򐂰
Options that must be the same on both nodes so that system behavior does not change
during failover.
򐂰 Options that can be different on each node.
Setting matching node options
Because certain Data ONTAP options must be the same on the local and partner node, check
them with the
options command on each node. Change them as necessary.
Tip: You can determine whether an option must be the same from the comments that
accompany the option value when you run the
option command. If there are no comments,
the option can be different on each node.