How do I reconfigure iSCSI targets on my NAS after removing it from an HA cluster?
Last modified date:
2025-06-24
Applicable Products
- QuTS hero h5.3.0 or later
- iSCSI & Fibre Channel
Scenario
In a high-availability (HA) cluster, the two nodes synchronize all data and settings to function as a single unit, so that the passive node can immediately take over services if the active node fails. This means that if there are any iSCSI target configurations, they are identical between the two node devices.
However, if you remove the passive node from the cluster and want to use it as a standalone device, you need to change the iSCSI target configurations on the now standalone device or else conflicts will occur with the other node device.
Solution
After removing a passive node from an HA cluster, you must change all of the following settings to ensure proper functioning of the iSCSI targets on the device:
- Modify all IQNs
Each iSCSI target must have a unique IQN (iSCSI qualified name). If you do not change the iSCSI target IQNs on the standalone device, they won't be discoverable because those IQNs are already in use by the other device in the original HA cluster.TipTo edit an iSCSI target's IQN, go to iSCSI & Fibre Channel > iSCSI, identify the iSCSI target, and then click
> Modify.
For details, see Editing iSCSI target settings. - Modify all network portal bindings
After removing the passive node from an HA cluster, the device can no longer use the IP addresses of the cluster. You must manually change the network portal binding for each iSCSI target and bind them to IP addresses unique to the device.TipTo edit an iSCSI target's network portal binding, go to iSCSI & Fibre Channel > iSCSI Permissions, identify the iSCSI target, click
, and then go to the Network Portal Binding tab.
For details, see Binding an iSCSI target to an IP address. - Change all CHAP passwords
For security reasons, all CHAP (Challenge-Handshake Authentication Protocol) passwords in an HA cluster are encrypted with the HA service. When you remove the passive node from an HA cluster, you must reset all CHAP passwords to remove the HA encryption. This includes both default and custom CHAP passwords.Tip- To edit default iSCSI CHAP settings, go to iSCSI & Fibre Channel > Protocol Settings > Default iSCSI CHAP.
For details, see iSCSI & Fibre Channel global settings. - To edit an iSCSI target's CHAP settings, go to iSCSI & Fibre Channel > iSCSI, identify the iSCSI target, click > Modify, and then click Advanced Settings.
For details, see Editing iSCSI target settings.
- To edit default iSCSI CHAP settings, go to iSCSI & Fibre Channel > Protocol Settings > Default iSCSI CHAP.
