Cold standby

IBM® UrbanCode Deploy employs the cold standby HA strategy for the application tier.

When the primary system fails, the cold standby is brought online and promoted to primary server. When the standby is online, it reestablishes connections with all agents, runs recovery, and proceeds with any queued processes. Because the most intense work is handed-off to agents, a high performance configuration must not have an agent on the same hardware as the main server.

The IBM UrbanCode Deploy server aggressively uses threading and takes advantage of any additional processor cores that are assigned to it. A small to midrange server with 2-4 multi-core processors is ideal. However, because it is relatively easy to move an existing IBM UrbanCode Deploy server installation to a new server, starting small and scaling as needed is a legitimate strategy. The memory available to the application tier should also be increased from the default 256 MB to something on the order of 1 GB.


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