Install Guide

4 Click Save to save the settings.
The ARR Proxy Server is now recorded in the WDM database, and this completes the Load Balancing setup.
Installing WDM Components
The load balancing setup needs multiple installations of WDM Management Servers. However, you must make sure that one of the systems
in this setup has a complete installation of WDM. You can then install only the Management Server and the ThreadX Service on the other
systems. For more information on installing only the selected components, see
Installing Management Server
Conguring Load Balancing for ThreadX 4.x Devices
When you want to manage a large number of PCoIP (ThreadX) devices, then a single ThreadX Manager Service may not scale up to
manage the large number of ThreadX devices. Conguring load balancing for ThreadX devices helps you to manage a large number of such
devices.
Prerequisites
Before you congure Load Balancing for ThreadX devices, you rst need to identify a Windows 2008 R2 system and install the Domain
Name Server (DNS) on the system.
For more information on installing DNS on a Windows 2008 Server, go to http://technet.microsoft.com/en-us/library/cc725925.aspx.
The load balancing mechanism uses the DNS Round Robin method to share and distribute the network resource loads.
About this task
To set up the DNS Round Robin:
Steps
1 Log in to the DNS Server and launch the DNS Manager.
2 Select the server name on the tree in the left pane, right-click and select Properties from the menu.
The Properties window is displayed.
3 Click the Advanced tab on the Properties window.
4 In the Server Options pane, make sure that the options Enable round robin and Secure cache against pollution are checked.
5 If you require netmask ordering, then select the Enable netmask ordering option. This feature tries to prioritize local resources for the
clients.
6 Click the View menu on the DNS Manager and select the Advanced option.
7 Expand the Domain node and under Forward Lookup Zones, select the domain. For example, WDMSQA11.com.
8 Right-click and select New Host (A or AAAA)....
The New Host window is displayed.
9 Enter the virtual host name of the ThreadX Server Farm that will participate in the load balancing. For example, ThreadXServer1.
The FQDN of the server is displayed automatically.
10 Enter the IP address of the server.
11 Click Add Host.
12 Repeat steps 8–11 to add as many ThreadX Servers as you want.
13 Select the Domain node on DNS Manager, right-click and select Other New Records.
14 In the Resource Record Type dialog box, select SRV Location and click Create Record.
15 In the New Resource Record dialog box, enter the following values:
• Service Name – _PCOIP-broker
• Protocol – _tcp
• Port Number – 50000.
• Host Oering this Service – enter the hostname of the ThreadX Server Farm.
16 Repeat steps 13–15 to add the _PCOIP-tool SRV record.
17 Congure DNS Caching:
a On the DNS Manager, expand the Domain node and under it select the _tcp node.
b Select _PCOIP-tool on the right-hand pane, right-click and select Properties.
c In the Properties window, check the Time to live (TTL) value. The caching interval is called the Maximum TTL value and the
default is 1 hour. You can change this if you want.
Conguring
load balancing 79