HP StorageWorks 8000, User Manual

Page: 69 / 268

Configuring Your System and Network
69
Setting the Domain Name Service (DNS)
Domain Name Servers convert system names that people can remember (such as
nas8000.fc.hp.com) to IP addresses (such as 123.45.67.89) that are used by
packet-routing software.
To enter the DNS information:
1. In Command View NAS, click the Configuration tab.
2. Under TCP/IP, select DNS.
3. Select Actions > Edit DNS Values.
4. If required, enter the DNS Domain Name. The NAS server can belong to
only one domain.
5. Enter DNS IP Addresses, pressing Enter after each address (up to three
addresses). You can enter them in the appropriate search order (that is, enter
the IP address of the Primary DNS first, followed by the IP address of the
secondary DNS, and so on until all of your Domain Name Servers are
identified) or rearrange them afterward using the up and down arrow buttons.
6. Click OK.
To edit the DNS information, click Actions > Edit DNS Values, then:
■
Click the incorrect entry to modify it.
■
Click the entry, then click the delete icon to remove it.
Click OK to apply each change.
Assigning DNS Entries for HA Package Names
The storage and associated shares in an HA system are divided into packages;
each of which is assigned a unique, floating virtual IP address (VIP). The shares
of each package must be accessed, not by the server IP address, but by the VIP.
This is necessary so that when one node fails, the package and its storage, shares,
and VIP can be activated on another node in the cluster and thus remain available
to users.
When a node fails, any user who has mapped a share with the node IP address,
rather than the VIP, will lose access to that node. To ensure this does not occur,
create a package, make a DNS entry for this package name, and map the DNS
entry to the VIP. Use only the DNS name when accessing shares and mapping
drives. Do not use any other browsing tools to find shares.