Although this architecture should work with the maximum number
of nodes allowed in an MC/ServiceGuard cluster, this cluster architecture has
been tested with a maximum of 4 nodes and dual lock disks. Therefore,
the configuration currently supported is 2 nodes per data center
as shown in Figure 2-2 “Two Data Centers with FibreChannel
Point-to-Point”.
Disks in the configuration can be HP SureStore E XP Series
disk arrays or EMC Symmetrix arrays. Each array must contain one
of the dual cluster lock disks. Host connections to the disks must
be made using redundant links (PV links).
The maximum distance between nodes is 10 kilometers using
long-wave hubs between the disk arrays. Therefore, this configuration
can be used for both campus clusters and metropolitan clusters.
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