1. Is there a difference between Unity failover and standby redundancy?
2. Is Unity failover supported across WAN?
3. How many servers can be added into one unity cluster?
I was going through lot of documentation and rather getting confused.. help on this is highly appreciated.
of course there is, if not, why use 2 concepts for the same thing???
Cisco Unity Failover and Standby Redundancy
with 5.x and 7.X it's supported
Failover Requirements for Separating Cisco Unity Servers by a WAN
the whole thread is about redundancy and failover so if you mean how many servers for failover or redundancy the answer is 2
Comparison of Cisco Unity Failover and Standby Redundancy
Cisco Unity failover provides system-malfunction failover within a data center. Failover consists of two servers, a primary and a secondary. In general, the primary server is active and taking calls, while the secondary is inactive and not taking calls. Any changes to subscriber or configuration data on the primary server are automatically replicated to the secondary server. If the primary server stops functioning for some reason, the secondary server automatically becomes the active server and starts taking calls. The primary server temporarily becomes inactive.
Cisco Unity standby redundancy provides disaster-recovery failover across geographic locations. There are still two servers, a primary and a secondary, but they are installed in separate data centers, commonly in separate cities. If the data center in which the primary server is installed is affected by a natural disaster or other catastrophe, someone in (or with remote access to) the disaster-recovery facility manually activates the secondary server, and the secondary server begins taking calls.
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