HP XP20000/XP24000 HP StorageWorks XP Disk Array Configuration Guide: Tru64 UN - Page 15

Configuring system files, Clustering and fabric zoning

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Configuring system files Configure the Tru64 system to recognize the FCA as explained in the Tru64 Installation Guide or New Hardware Delivery (NHD) kit. This consists of booting genvmunix and executing doconfig (as explained in the Installation Guide). This can also be done by editing the system kernel configuration file as explained below. 1. Use the doconfig -c config_file command to reconfigure the kernel, where config_file is usually the system name. 2. When you add a new FCA after an FCA of the same type has already been installed, a simple reboot causes the host to recognize the new FCA. No rebuilding or reconfiguration is required. Clustering and fabric zoning If you plan to use clustering, install and configure the clustering software on the servers. Clustering is the organization of multiple servers into groups. Within a cluster, each server is a node. Multiple clusters compose a multi-cluster environment. The following example shows a multi-cluster environment with three clusters, each containing two nodes. The nodes share access to the disk array. In this example, the array is configured so that Host Group 00 is presented only to Cluster 1, Host Group 01 only to Cluster 2, and Host Group 02 only to Cluster 3. Always configure an array so that a host group is presented to only 1 cluster. Figure 2 Multi-cluster environment Within the Storage Area Network (SAN), the clusters may be homogeneous (all the same operating system) or they may be heterogeneous (mixed operating systems). How you configure LUN security and fabric zoning depends on the operating system mix and the SAN configuration. Fabric zoning and LUN security for multiple operating systems You can connect multiple clusters of various operating systems to the same switch and fabric using appropriate zoning and LUN security as follows: • Storage port zones may overlap if more than one operating system needs to share an array port. XP Disk Array Configuration Guide for Tru64 UNIX 15

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Configuring system files
Configure the Tru64 system to recognize the FCA as explained in the Tru64 Installation Guide or
New Hardware Delivery (NHD) kit. This consists of booting
genvmunix
and executing
doconfig
(as
explained in the Installation Guide). This can also be done by editing the system kernel configuration
file as explained below.
1.
Use the
doconfig -c
config_file
command to reconfigure the kernel, where
config_file
is usually the system name.
2.
When you add a new FCA after an FCA of the same type has already been installed, a simple
reboot causes the host to recognize the new FCA. No rebuilding or reconfiguration is required.
Clustering and fabric zoning
If you plan to use clustering, install and configure the clustering software on the servers.
Clustering is the organization of multiple servers into groups. Within a cluster, each server is a node.
Multiple clusters compose a multi-cluster environment. The following example shows a multi-cluster
environment with three clusters, each containing two nodes. The nodes share access to the disk array.
In this example, the array is configured so that Host Group 00 is presented only to Cluster 1, Host
Group 01 only to Cluster 2, and Host Group 02 only to Cluster 3. Always configure an array so that
a host group is presented to only 1 cluster.
Figure 2 Multi-cluster environment
Within the Storage Area Network (SAN), the clusters may be homogeneous (all the same operating
system) or they may be heterogeneous (mixed operating systems). How you configure LUN security
and fabric zoning depends on the operating system mix and the SAN configuration.
Fabric zoning and LUN security for multiple operating systems
You can connect multiple clusters of various operating systems to the same switch and fabric using
appropriate zoning and LUN security as follows:
•
Storage port zones may overlap if more than one operating system needs to share an array port.
XP Disk Array Configuration Guide for Tru64 UNIX
15