EMC2 Data Domain DD9500 System Installation And Upgrade Manual page 80

Upgrading an Existing Data Domain System to HA
80 Data Domain DD9500 System 5.7.1 High Availability (HA) System Installation and Upgrade Guide
Note
Specify the hostname or the IP address of the standby node.
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The ha create command will fail if one node is configured to use DHCP and the
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other node is configured to use static IP addresses. Both nodes must use the same
method to configure IP addresses.
Run the following command:
ha create peer {<ipaddr> | <hostname>} [ha-name <ha-system-
name>]
ha create peer mysystem-p1.emc.com
This command:
Reboots both nodes, and completes the HA pairing when the nodes come back
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online.
Promotes the existing node's hostname to be the HA system name.
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Assigns node 0 the local hostname <HA-system-name> -p0.
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Assigns node 1 the local hostname <HA-system-name> -p1.
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2. On node 0, convert all data IP addresses to floating IP addresses.
Run the following command:
net config <interface-name> <IP address> netmask <netmask>
type floating
Note
The net config command with the float option is the only way to configure a floating IP
address. There is no method available in Data Domain System Manager to configure a
floating IP address.
net config eth1a 2.2.2.1 netmask 255.255.255.0 type floating
3. Return to HA upgrade overview on page 78.