Review the following requirements for VCS campus clusters:
You must install VCS 5.0 MP3.
You must enable the HA/DR license if you want to manually control a service group failover across sites or system zones.
You must have a single VCS cluster with at least one node in each of the two sites, where the sites are separated by a physical distance of no more than 80 kilometers.
The storage and networks must have redundant-loop access between each node and each storage array.
Symantec recommends the following in a campus cluster setup:
A common cross-site physical infrastructure for storage and LLT private networks.
Technologies such as Dense Wavelength Division Multiplexing (DWDM) for network and I/O traffic across sites to minimize the impact of network failure.
Symantec recommends that you configure I/O fencing to prevent data corruption in the event of link failures.
You must install Veritas Volume Manager 5.0 MP3 with the FMR license and the Site awareness license.
You must configure storage to meet site-based allocation and site-consistency requirements for VxVM.
All the disks must be tagged with the appropriate VxVM site names.
The VxVM site names of both the sites in the campus cluster must be added to the diskgroups.
The allsites attribute for each volume in the diskgroup must be set to on. (By default, the value is set to on.)
The siteconsistent attribute for the diskgroups must be set to on.