High-availability pair issues
If you are using HA pairs, you might need to familiarize yourself with these
issues.
For more information about these issues, see the IBM System Storage N series
Data ONTAP 8.0 7-Mode High-availability Configuration Guide.
v “Storage system in an HA pair might get rebooted during a controller or
NVRAM replacement”
v “If takeover is enabled for network interface failure, automatic giveback
should be disabled”
Storage system in an HA pair might get rebooted during a controller or
NVRAM replacement
During a controller or NVRAM replacement, if the ha-config chassis and
ha-config controller values are set to non-ha, the storage system reboots after
displaying the following error message: 0 disk found.
If you encounter this error message, you need to boot the storage system into
Maintenance mode and set the ha-config chassis and ha-config controller
values to ha by performing the following steps:
1. Run the following command to check the ha-config values:
ha-config show
2. Run the following command to change the value of the controller:
ha-config modify controller ha
3. Run the following command to change the chassis value:
ha-config modify chassis ha
4. Run the following command again to confirm that the ha-config values are
set to ha:
ha-config show
If takeover is enabled for network interface failure, automatic giveback
should be disabled
If you set the cf.takeover.on_network_interface_failure option to on to
enable automatic failover on network interface failures, ensure that you have
the cf.giveback.auto.enable option set to off.
If the cf.giveback.auto.enable option is set to on, a network interface failure
could result in a continuous series of takeovers and givebacks until the
network interface problem is resolved.
94 IBM System Storage N series: Data ONTAP 8.0.4 7-Mode Release Notes
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