HP Restricted
Template date: 09/2003
NAS 4000s and 9000s Installation Guide
DRAFT
39
About the quorum disk
When configuring the Quorum disk only one node should be
powered on. All other potential cluster nodes must be powered
off.
The quorum disk is used to store cluster configuration database
checkpoints and log files that help manage the cluster. The
quorum disk must be a shared disk resource. HP makes the
following quorum disk recommendations:
■
Use the Disk tab in the WebUI to configure the quorum disk
resource
■
Create a small partition (A minimum of 50 MB to be used as
a quorum disk. HP recommends a quorum disk to be 500
MB)
■
Dedicate a separate disk resource for a quorum disk. As the
failure of the quorum disk would cause the entire cluster to
fail, it is strongly recommended that the disk resource be a
RAID 1 configuration.
During the Cluster service installation, a drive letter must be
provided for the quorum disk. HP recommends the drive letter Q
for the quorum disk.
Configuring shared disks
Use the Disk tab in the WebUI to configure additional shared disk
resources. Verify that all shared disks are formatted as NTFS and
are designated as Basic.
Additional shared disk resources will be automatically added into
the cluster as physical disk resources during the installation of
cluster services. Each Physical disk resource will reside in its own
cluster group.
Verifying disk access and functionality
Write a file to each shared disk resource to verify functionality.
At this time, shut down the first node, power on the next node and
repeat the Verifying Disk Access and Functionality step above for
all cluster nodes. When it has been verified that all nodes can read
and write from the disks, turn off the all cluster nodes and power
on the first, and then continue with this guide.
