Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Building a Metropolitan Cluster Using MetroCluster/CA
Designing a Disaster Tolerant Architecture for use with MetroCluster/CA
Chapter 3 83
Disaster Tolerant Checklist
Use the this checklist to make sure you have adhered to the disaster
tolerant architecture guidelines for a two main data centers and a third
location configuration.
Figure 3-4 Disaster Tolerant Checklist
All redundant cabling for network, heartbeat, and CA connections are
The elements in each data center including nodes, disks, network components,
and climate control are on separate power circuits.
Data centers A and B have the same number of nodes to maintain quorum in case
an entire data center fails.
Each node is configured with PV links.
routed using different physical paths.
Each XP Series disk array is configured with redundant CA links, each of which is
Arbitrator nodes or Quorum Server nodes are located in a separate location from either of the
primary data centers (A or B).
At least two networks are configured to function as the cluster heartbeat.
Redundant XP Series command devices have been configured.
connected to a different LCP or RCP card.