HP StorageWorks Clustered File System 3.6.1 Windows Storage Server Edition administration guide (AG515 - 96007, August 2008)

Chapter 5: Configure Servers 56

The DNS server is configured for round robin using the following A

records:

Address: The virtual hostnames that customers use to send requests to

your site. (The period following the “.com” in the address is required.)

Time to Live: The number of seconds an address can be cached by

intermediate DNS servers for load balancing. This value should be

relatively brief so that the addresses of non-functioning servers are not

cached by intermediate DNS servers for long periods of time.

Service: Always IN for internet.

Record Type: Always A for address.

IP address: The IP addresses for the virtual hosts that you will use for

each server in the cluster. These are the IP addresses that the DNS will

use to send alternate requests.

With this setup, the domain name server sends messages in a round-

robin fashion to the two virtual hosts indicated by the IP addresses,

causing them to share the request load. Each virtual host has a single

primary server on which it performs its work; the other server is a backup

in case the primary goes down or is taken offline for maintenance.

Depending on your needs, more complicated combinations of DNS

round robin and HP Clustered File System can be used, including cluster

configurations with multiple failover-protected load-balanced servers.

Address

Time to

Live Service

Record

Type

Address