Administrator Guide

The SAN network conguration for a NAS cluster includes the following IP addresses:
• Management IP address, which allows access between the PS Series group and the NAS cluster. The management IP address
must be on the same subnet as the group IP address.
• IP addresses for each NAS controller, which allows access between the PS Series group and the NAS controllers. The NAS
controller IP addresses must be on the same subnet as the group IP address. You must specify the maximum IP addresses for
your NAS appliance hardware IP addresses for each NAS controller.
The number of SAN access IP addresses must be the same on each NAS controller in the NAS cluster.
By default, the SAN network uses 9000 (jumbo frames) for a maximum transmission unit (MTU) size. You cannot change the MTU
size for the SAN network.
If you modify the PS Series group network conguration (for example, if you modify the group IP address), you might need to make
a reciprocal adjustment to the NAS cluster SAN network conguration, including the SAN netmask. The SAN network conguration
must be in the same subnet as the group IP address.
Before you can modify the SAN network conguration, you must put the NAS cluster into maintenance mode.
NOTE: After you perform a SAN network change with replication congured, you will need to manually create a new
static route for the new SAN network.
Modify the SAN Network Conguration
If you modify the PS Series group network conguration (for example, if you modify the group IP address), you might need to make
a reciprocal adjustment to the NAS cluster SAN network conguration.
NOTE: Before you can modify the SAN network conguration for a NAS cluster, you must put the NAS cluster into
maintenance mode.
To modify the SAN network conguration:
1. Click Group, expand Group Conguration, and then select the NAS cluster.
2. Click Modify SAN network.
3. In the Modify SAN network dialog box, you can modify:
• Management IP address
• SAN netmask (based on the group IP address subnet)
• IP addresses for each NAS controller (either 1 or 4)
The number of SAN access IP addresses for each NAS controller must be the same on each NAS member (NAS controller
pair). Click the Auto Fill button to automatically enter IP addresses based on the next available addresses after the NAS
cluster management IP address.
NOTE:
• The SAN network conguration must be in the same subnet as the group IP address.
• After you perform a SAN network change with replication congured, you will need to manually create a new
static route for the new SAN network.
4. Click OK.
About NAS Cluster Maintenance Mode
Maintenance mode is a tool for the system administrator to take the le system oine, thereby isolating the NAS cluster from
outside connections and le-system activity. The main purpose of maintenance mode is to provide the administrator with a safe and
organized method to take down a le system without harming or losing current data, before shutting down the controllers or storage
array when it is necessary to do so.
NAS Cluster Operations
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