HP StorageWorks Storage Mirroring Recover User's Guide (T5437-96008, November 2009)

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1. To add additional DNS server IP addresses, type the IP address into the DNS
Server field, then click Add.
2. The list box under the DNS Server 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.
3. In the Source IP column, select the checkbox next to the source IP address(es) to
be monitored for failover.
4. In the Target IP column, 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.
5. 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).
Note:
If the server that the Application Manager is running on has a problem
connecting to the DNS server through WMI, the TTL record will not be
updated. This will cause the Application Manager to return an error that the
RPC server is unavailable.
6. In the Username field, enter the user name that will be used to access/modify DNS
records. The login account MUST be a member of the DNSAdmins group for the
domain in which the DNS server resides. For more information about permissions,
see Application Manager Credentials.
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.
7. In the Password field, enter the password that will be used to access/modify DNS
records.
8. 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.