San Connectivity Guidelines; Ip Addresses; Name Resolution; Ip Addresses For Bcc-Enabled Cluster Resources - Novell BUSINESS CONTINUITY CLUSTERING 1.2.1 - ADMINISTRATION Administration Manual

Consider connecting cluster nodes to access switches for fault tolerance.

3.3.3 IP Addresses

Use a dedicated IP address range for each cluster. You need a unique static IP address for each of the
following components of each peer cluster:
Cluster (master IP address)
Cluster nodes
Cluster resources that are not BCC-enabled (file system resources and service resources such as
DHCP, DNS, SLP, FTP, and so on)
Cluster resources that are BCC-enabled (file system resources and service resources such as
DHCP, DNS, SLP, FTP, and so on)
Plan your IP address assignment so that it is consistently applied across all peer clusters. Provide an
IP address range with sufficient addresses for each cluster.

3.3.4 Name Resolution

In BCC 1.1 and later, the master IP addresses are stored in the NCS:BCC Peers attribute. Ensure that
SLP is properly configured for name resolution.

3.3.5 IP Addresses for BCC-Enabled Cluster Resources

Use dedicated IP address ranges for BCC-enabled cluster resources. With careful planning, the IP
address and the name of the virtual server for the cluster resource never need to change.
The IP address of an inbound cluster resource is transformed to use an IP address in the same subnet
of the peer cluster where it is being cluster migrated. You define the transformation rules to
accomplish this by using the Identity Manager driver's search and replace functionality. The
transformation rules are easier to define and remember when you use strict IP address assignment,
such as using the third octet to identify the subnet of the peer cluster.
For an example of configuring a dynamic transformation by using DNS, see
Dynamic DNS with BCC 1.2," on page

3.4 SAN Connectivity Guidelines

The primary objective of SAN (storage area network) connectivity in a cluster is to provide solid
and stable connectivity between cluster nodes and the storage system. Before installing Novell
Cluster Services and Novell Business Continuity Clustering, make sure the SAN configuration is
established and verified.
Use the guidelines in this section to design the SAN connectivity for each of the peer clusters in the
business continuity cluster:
Use host-based multipath I/O management.
Use redundant SAN connections to provide fault-tolerant connectivity between the cluster
nodes and the shared storage devices.
Connect each node via two fabrics to the storage environment.
153.
Appendix E, "Using
Planning a Business Continuity Cluster 31