Designing Disaster Recovery Clusters using Metroclusters and Continentalclusters, Reprinted October 2011 (5900-1881)

Data Center Processes
Continentalclusters provides the cmrecovercl command that fails over all applications on the
primary cluster in a recovery pair that are protected by Continentalclusters. However, application
failover also requires well-defined processes for the two sites of a recovery pair. These processes
and procedures should be written down and made available at both sites.
Some considerations for site management are as follows:
• Who notifies whom for the various events: configuration changes, alerts, alarms?
• What communication methods should be used? Email? Phone? Beeper? Multiple methods?
• Who has the authority to perform what sort of configuration modifications? Can the
administrator at one site log in to the nodes on the remote site? If so, what permissions would
be set?
• How often is a practice failover done?
• Is there a documented test plan?
• What is the process for tracking changes made to the primary cluster?
Continentalclusters Worksheets
Planning is an essential effort in creating a robust Continentalclusters environment. It is recommended
to record the details of your configuration on planning worksheets. These worksheets can be filled
in partially before configuration begins, and then completed as you build the Continentalclusters.
All the participating Serviceguard clusters in one Continentalclusters should have a copy of these
worksheets to help coordinate initial configuration and subsequent changes. Complete the worksheets
in the following sections for each recovery pair of clusters that will be monitored by the
Continentalclusters monitor.
Data Center Worksheet
The following worksheet will help you describe your specific data center configuration. Fill out the
worksheet and keep it for future reference.
==============================================================
Continentalclusters Name: _____________________________________
Continentalclusters State Dir: ________________________________
==============================================================
Primary Data Center Information:_________________________________
Primary Cluster Name: ________________________________________
Data Center Name and Location: _______________________________
Main Contact: _______________________________________________
Phone Number: ________________________________________________
Beeper: ______________________________________________________
Email Address: _______________________________________________
Node Names: __________________________________________________
Monitor Package Name: __ccmonpkg______________________________
Monitor Interval: _____________________________________________
Continentalclusters State Shared Disk: ________________________
==============================================================
Recovery Data Center Information:
Recovery Cluster Name: ______________________________________
Data Center Name and Location: ______________________________
Main Contact: _______________________________________________
Phone Number: _______________________________________________
Beeper: _____________________________________________________
Email Address: ______________________________________________
Node Names: _________________________________________________
Monitor Package Name: __ccmonpkg_____________________________
Monitor Interval: ___________________________________________
Continentalclusters State Shared Disk: ________________________
52 Designing Continentalclusters