Specifications

Multi-Site Cluster Configuration Considerations
and are familiar with the SteelEye LifeKeeper graphical user interface, the SteelEye Protection Suite
Multi-Site Cluster resource hierarchy display in the LifeKeeper GUI will appear differently from
previous releases of SteelEye DataKeeper.
Multi-Site Cluster Configuration Considerations
Before you begin configuring your systems, it’s important to understand what hierarchy configurations
you should avoid in the Linux Multi-Site Cluster hierarchy environment.
Below are three examples of hierarchy configurations that should be avoided in the Linux Multi-Site
Cluster environment. In all these cases, a Linux Multi-Site Cluster hierarchy shares an underlying
device with another hierarchy. Failure or switchover of either hierarchy will impact the associated
hierarchy. This could possibly produce unintended consequences such as application failure or mirror
breakage; which would require a full-resync process later. In addition, complications could result
when switching the mirror sources to the DR site allowing it to mirror back to the primary site since
the mirror target system will have the lower level disk resources in service. Any shared resources
must also be operational (ISP) on the same node as the mirror target.
310Multi-Site Cluster