HP LeftHand P4000 SAN Solutions - Manual (Page 69)

6. Click OK.
A confirmation message opens. If you are disabling the only interface, the message warns
that the storage system may be inaccessible if you continue.
7. Click OK.
If the storage system for which you are disabling the interface is a manager in a management
group, a window opens which displays all the IP addresses of the managers in the management
group and a reminder to reconfigure the application servers that are affected by the update.
Configuring a disabled interface
If one interface is still connected to the storage system but another interface is disconnected, you
can reconnect to the second interface using the CMC. See
“Configuring the IP address manually”
(page 52) .
If both interfaces to the storage system are disconnected, you must attach a terminal, or PC or
laptop to the storage system with a null modem cable and configure at least one interface using
the Configuration Interface. See
“Configuring a network connection” (page 248) .
Using a DNS server
You configure DNS when setting up a management group using the wizard. Make changes to the
DNS settings using the DNS tab for the management group.
The LeftHand OS uses a DNS server to resolve host names. For example, if you enter a host name
to specify an NTP time server, the specified DNS server resolves the host name to its IP address.
DNS and DHCP
If you configure the storage system to use DHCP to obtain an IP address, and if the DHCP server
is configured to provide the IP addresses of the DNS servers, then a maximum of three DNS servers
will automatically be added to the management group. These DNS servers are listed as IP addresses
in the management group on the DNS tab. You can remove these DNS servers, but the LeftHand
OS will not be able to resolve host names until you enter a new DNS server.
DNS and static IP addresses
If you assigned a static IP address to the storage system and you want the storage system to
recognize host names, you must manually add a DNS server to the management group DNS tab.
NOTE: If you initially set up the storage system to use DHCP, and then change the configuration
to use a static IP address, the DNS server provided by DHCP will remain on the DNS tab. You can
remove or change this DNS server.
Editing DNS settings
Changing the DNS domain name
Change the name of the DNS domain in which the management group resides.
1. In the navigation window, select a management group and log in.
2. Click the DNS tab.
3. Click DNS Tasks, and select Edit DNS Domain Name.
4. Enter the DNS domain name.
5. Click OK when you are finished.
Adding or changing the DNS servers
Add up to three DNS servers for use with the management group. You can also change or remove
the DNS servers used.
Using a DNS server 69