What is quorum disk?
What is quorum disk?
A quorum disk is an MDisk or a managed drive that contains a reserved area that is used exclusively for system management. A system automatically assigns quorum disk candidates. When you add new storage to a system or remove existing storage, however, it is a good practice to review the quorum disk assignments.
What is quorum disk in Redhat cluster?
Quorum Disk is a disk-based quorum daemon, qdiskd , that provides supplemental heuristics to determine node fitness. With heuristics you can determine factors that are important to the operation of the node in the event of a network partition.
What is quorum disk in Linux cluster?
A cluster quorum disk is the storage medium on which the configuration database is stored for a cluster computing network. The cluster configuration database, also called the quorum, tells the cluster which physical server(s) should be active at any given time.
What is quorum in PCS cluster?
A quorum device helps a cluster manager make cluster management decisions when the cluster manager’s normal decision process does not produce a clear choice. To select an action to take, a cluster manager counts the number of cluster domain nodes that support each of the potential actions.
How do I check my quorum status?
A. Start Cluster Administrator, then right-click the cluster’s name and select Properties. Select the Quorum tab, and you’ll see the current quorum disk in the “Quorum resource” drop-down list, which the Figure shows. If you want to change the quorum disk, select a new quorum resource from the list.
What is quorum model?
A quorum is the minimum number of votes that a distributed transaction has to obtain in order to be allowed to perform an operation in a distributed system. A quorum-based technique is implemented to enforce consistent operation in a distributed system.
How do I create a disk witness in a quorum?
On the Select Quorum Witness page, select an option to configure a disk witness or a file share witness. The wizard indicates the witness selection options that are recommended for your cluster. You can also select Do not configure a quorum witness and then complete the wizard.