HP StorageWorks 4000s NAS 4000s and 9000s Installation Guide - Page 39

Template date: 09/2003 DRAFT 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. NAS 4000s and 9000s Installation Guide 39 HP Restricted