Managing HP Serviceguard for Linux, Eighth Edition, March 2008

Planning and Documenting an HA Cluster
Cluster Lock Planning
Chapter 4 105
Using a Quorum Server
The Quorum Server is described under “Use of the Quorum Server as a
Cluster Lock” on page 47. See also “Cluster Lock” on page 46.
A quorum server:
• Can be used with up to 150 clusters, not exceeding 300 nodes total.
• Can support a cluster with any supported number of nodes.
• Can support a cluster with any supported number of nodes.
• Must be configured on an IPv4, not an IPv6, network.
• Can communicate with the cluster on up to two subnets (a primary
and an alternate).
IMPORTANT If you plan to use a Quorum Server, make sure you read the HP
Serviceguard Quorum Server Version A.03.00 Release Notes before you
proceed. You can find them at: http://www.docs.hp.com -> High
Availability -> Quorum Server. You should also consult the Quorum
Server white papers at the same location.