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Preparing Your Systems for Clustering 51
d
Repeat step b and step c to add additional hosts.
e
Click
Apply
.
16
Click
OK
to exit the
Storage Group Properties
dialog box.
Configuring the Hard Drives on the Shared Storage System(s)
This section provides information for configuring the hard drives on the
shared storage systems. The shared storage system hard drives must be
configured before use. The following sections provide information on these
configurations.
Configuring and Managing LUNs
Configuring and managing LUNs is accomplished using the Navisphere
Manager utility. Before using Navisphere Manager, ensure that the Navisphere
Agent service is started on your cluster nodes.
In some cases, the LUNs may have been bound when the system was shipped.
It is still important, however, to install the management software and to verify
that the desired LUN configuration exists.
You can manage your LUNs remotely using Navisphere Manager. A minimum
of one LUN (RAID drive) is required for an active/passive configuration; at
least two drives are required for an active/active configuration.
It is recommended that you create at least one LUN or virtual disk for each
application. If multiple NTFS partitions are created on a single LUN or
virtual disk, these partitions will not be able to fail over individually from
node-to-node.
Configuring the RAID Level for the Shared Storage Subsystem
The hard drives in your shared storage subsystem must be configured into
LUNs or virtual disks using Navisphere Manager. All LUNs or virtual disks,
especially if they are used for the quorum resource, should be bound and
incorporate the appropriate RAID level to ensure high availability.
NOTE: It is recommended that you use a RAID level other than RAID 0 (which is
commonly called striping). RAID 0 configurations provide very high performance,
but do not provide the level of availability required for the quorum resource. See the
documentation for your storage system for more information about setting up RAID
levels for the system.