Novell GROUPWISE 7 - INTEROPERABILITY GUIDE, Manual

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386 GroupWise 7 Interoperability Guide
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41.1 Setting Up Your Microsoft Cluster
As you set up your Microsoft cluster, record key information about the cluster on the System
Clustering Worksheet:
The number of nodes in the cluster strongly influences where you place GroupWise domains and
post offices. You have several alternatives:
Š
Your whole GroupWise system can run in a single cluster.
Š
Parts of your GroupWise system can run in one cluster while other parts of it run in one or more
other clusters.
Š
Parts of your GroupWise system can run in a cluster while other parts run outside of the cluster,
on non-clustered servers.
If you do not have the system resources to run all of your GroupWise system in the cluster, you must
decide which parts have the most urgent need for the high availability provided by clustering. Here
are some suggestions:
Š
Post offices and their POAs must be available in order for users to access their GroupWise
mailboxes. Therefore, post offices and their POAs are excellent candidates for the high
availability provided in a cluster.
Š
In a like manner, WebAccess provides user access to GroupWise mailboxes across the Internet
through users’ Web browsers. It is another good candidate for the cluster.
Š Domains and their MTAs are less noticeable to GroupWise client users when they are
unavailable (unless users in different post offices happen to be actively engaged in an e-mail
discussion when the MTA goes down). On the other hand, domains and their MTAs are critical
to GroupWise administrators, although administrators might be more tolerant of a down server
than client users are. Critical domains in your GroupWise system are the primary domain and,
if you have one, a hub or routing domain. These domains should be in the cluster, even if other
domains are not.
Š The Internet Agent might or might not require high availability in your GroupWise system,
depending on the importance of immediate messaging across the Internet and the use of POP3
or IMAP4 clients by GroupWise users.
There is no right or wrong way to implement GroupWise in a cluster. It all depends on the specific
needs of your particular GroupWise system and its users.
41.2 Planning a New Clustered Domain
The considerations involved in planning a new domain in a Microsoft cluster are essentially the
same as for any other environment.
Š Primary Domain: If you are setting up a new GroupWise system in a Microsoft cluster, you
will be creating the primary domain as you complete the tasks in this section. In preparation,
review “
Planning Your Basic GroupWise System ”, then print and fill out the “ Basic GroupWise
SYSTEM CLUSTERING WORKSHEET
Under Item 1: Cluster Name , record the name of your Microsoft cluster.
Under Item 2: Nodes in Cluster , list the servers that you have added to the cluster.