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uCommon administrator’s rights. The individuals responsible for administration of a farm should have administrative rights over each server in the farm. When you log into a Citrix server console or ICA session and run Published Application Manager, you administer applications under the context of your current Windows NT user name. Although you can view the applications on other servers in the farm without having administrative rights over those servers, you cannot publish or edit applications on those servers. For this reason, users who must run Published Application Manager to publish applications should make sure they have administrative privileges on each server in the farm.

uCommon base of user accounts. Server farms can include servers, and therefore users, from multiple domains. All ICA Client users must belong to a group of users common to all involved domains. Published Application Manager draws a common user account base from the intersection of the trust relationships of all affected Windows NT domains. See “Trust Intersection” below for more information on determining a common base of user accounts.

uPhysical Connection. Servers in a farm must be connected by some form of network connection. Some possible network connections include LAN, WAN, and dial-up asynchronous connections. Servers can be on different subnets if an ICA Gateway is in place to connect them. ICA Gateways are administered from Citrix Server Administration. See “Connecting Citrix Servers Across Network Subnets” in Chapter 4, “Configuring MetaFrame” for more information.

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The way you group servers into server farms depends on having a common base of user accounts among all involved Windows NT domains.

The common base of user accounts is determined by the intersection of the underlying trust relationships among the domains. For example, a farm can contain servers from:

A single domain named A	The trust intersection of A is A. You can configure
	published applications for all of A’s users. This
	model works for a single server that is a member of a
	Windows NT domain, multiple servers that are
	members of a single Windows NT domain, as well as
	a single server that is a member of a Windows NT
	workgroup.