HP Storage Mirroring V5 Software User Manual
Page 53
HP StorageWorks Storage Mirroring Application Manager user’s guide
43
After you select the DNS Failover option, click
Configure
. The Configure DNS Failover window will appear.
In the top portion of the window, you can add additional DNS server IP addresses. Type the IP address into the
DNS Server field, then click
Add
.
The list box under the DNS Server entry field contains all DNS IP addresses for the source and target servers.
The label after the DNS IP address indicates whether the DNS IP address belongs to the source, target, or both.
NOTE:
To remove an IP address from the DNS server list, select the IP address, then click the
Delete
button.
Enter the following information for DNS failover:
•
Source IP
—Select the checkbox next to the source IP address(es) to be monitored for failover.
•
Target IP
—Select the target IP address to be used when failover occurs.
NOTE:
If the target is monitoring multiple source IP addresses for failover, each monitored source IP
address must be mapped to a unique target IP address.
•
Update TTL
—To specify the value the Application Manager will establish for Time to Live (TTL) on the
source’s affected DNS records, select the
Update TTL
checkbox, then enter the desired update interval (in
seconds). The default is the current maximum TTL of all the source’s A records. The recommended value is
300 seconds (5 minutes).
•
Username
—Enter the user name that will be used to access/modify DNS records. The login account
MUST
be the DNS Admin for the domain in which the DNS server resides. For more information about
permissions, see ”
You may enter a user name for a different domain by entering a fully-qualified user name. The
fully-qualified user name must be in the format
domain\username
or
username@domain
. If you enter a
non-qualified name, the DNS domain will be used by default. The domain name is obtained from the DNS
server name, provided that reverse lookup in DNS is enabled. For more information about enabling reverse
lookup, refer to your Microsoft documentation.
•
Password
—Enter the password that will be used to access/modify DNS records.
After you have entered the information, click the Test button to validate that DNS failover is configured correctly
for the selected DNS server(s) and that the specified credentials are sufficient to update DNS. When the DNS
configuration is complete, click OK to save your entries and return to the Configure Protection window.