I am researching a cluster environment for proper disaster recovery for Exchange -- the main purpose is high availability...the only experience I have with this type of failover is using Legato CoStandby server, etc. Would clustering work for the following need:
* One Exchange Svr on location, one offsite
* If the Active node in the cluster on location goes down, one offsite takes over
I saw that they both need a "private LAN" connection to communicate with each other -- would this work over a PTP connection to a remote site? Also, if the shared storage location for the information store is a NAS storage device, doesn't that make for a single point of failure? Would it be better to have the NAS device at the location and a backup NAS at the offsite location?