216 The IBM TotalStorage NAS Gateway 500 Integration Guide
The cluster for node 1 panel will appear, as shown in Figure 9-7. We make the
following configurations:
򐂰 In the Subnet mask field, we input 255.255.254.0.
򐂰 In the file serving IP addresses field, we input 9.1.38.197.
򐂰 We recommend that you leave the “Enable fallback” check box checked.
Fallback means that after takeover has happened, if the preferred owner
comes online again, the resource group will move back to the preferred
owner. Fallback can cause service interruption for a short time, but it can
balance the workload between the two nodes.
򐂰 From the Adapter pull down list, select card at slot 2 port 1. Fill 192.168.40.1
in the IP address field. Click Add.
򐂰 From the Adapter pull down list, select card at slot 1port 1. Fill 192.168.30.1 in
the IP address field. Click Add.
Click Next to continue.
Figure 9-7 Cluster settings for node 1
Important: Here is where you would specify your default gateway if needed.
If you have problems setting the default gateway, refer to 9.5.2, “Handling the
default gateway” on page 228. Our default gateway is on the file serving IP
address subnet, which is a different subnet from boot IP addresses.
Chapter 9. Cluster configuration 217
The cluster for node 2 panel will appear, as shown in Figure 9-8. We make the
following configurations:
򐂰 In the File serving IP addresses field, we input 9.1.38.198.
򐂰 Leave the “Enable fallback” check box checked.
򐂰 From the Adapter pull down list, select card at slot 2 port 1. Fill 192.168.40.3
in the IP address field. Click Add.
򐂰 From the Adapter pull down list, select card at slot 1port 1. Fill 192.168.30.3 in
the IP address field. Click Add.
Click Next to continue.
Figure 9-8 Cluster settings for node 2
218 The IBM TotalStorage NAS Gateway 500 Integration Guide
The Synchronize Cluster panel appears, as shown in Figure 9-9. Click
Synchronize and Enable to synchronize the cluster.
Figure 9-9 Synchronize cluster
The node 1 network configuration panel will appear. Because we don’t have any
more network interface to configure on node 1, just click Next to continue.
The node 2 network configuration panel will appear. Because we don’t have any
more network interface to configure on node 2, just click Next to continue.
Note: The Cluster synchronization can take several minutes to complete.
Don’t make any change on any node during the synchronization period.
Note: If you did not purchase the CIFS feature, please skip ahead to the
volume selection panel description.
Chapter 9. Cluster configuration 219
The CIFS server panel will appear, as shown in Figure 9-10. Set the NETBIOS
server names, server description, and NETBIOS domain name here.
Click Next to continue.
Figure 9-10 CIFS server settings
The WINS configuration panel will appear. Because we don’t use WINS in our
lab, we just click Next to continue.
The CIFS authentication panel will appear, as shown in Figure 7-35 on page 144.
We select local authentication and click Next to continue.
Note: The two nodes must have different NETBIOS server names, and they
must belong to the same NETBIOS domain or workgroup.
Note: If you use WINS with your NAS Gateway 500 cluster, make sure the
WINS server settings are always identical on both nodes.
Note: All authentication settings on both nodes must be identical in a NAS
Gateway 500 cluster.
220 The IBM TotalStorage NAS Gateway 500 Integration Guide
If you select ActiveDirectory/NT4 Domain as the CIFS authentication method, the
Local Users panel will appear. Please select No, I will create local reader
accounts myself and click Next to continue.
The confirm CIFS settings panel will appear, as shown in Figure 9-11. Review
the settings and click Next to continue.
Figure 9-11 Confirm CIFS settings
Important: Do not select dynamic user creation here. The dynamic user
creation on NAS Gateway 500 is not cluster aware. It only creates local user
accounts on the node which is providing CIFS file service. After failover has
happened, the same user accounts may be recreated on the backup node. In
this situation, the local user accounts for the same CIFS user will be likely to
have different user IDs, which can cause serious file permission problems. For
example, users can’t access the files created by themselves, but can write to
files owned by other users instead.

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